Shorthand array syntax

src/Client.php

@@ -27,7 +27,7 @@ class Client
      * @param array  $options       Additional connection string options
      * @param array  $driverOptions Driver-specific options
      */
-    public function __construct($uri, array $options = array(), array $driverOptions = array())
+    public function __construct($uri, array $options = [], array $driverOptions = [])
     {
         $this->manager = new Manager($uri, $options, $driverOptions);
     }
@@ -52,7 +52,7 @@ class Client
      * @see ListDatabases::__construct() for supported options
      * @return DatabaseInfoIterator
      */
-    public function listDatabases(array $options = array())
+    public function listDatabases(array $options = [])
     {
         $operation = new ListDatabases($options);
         $server = $this->manager->selectServer(new ReadPreference(ReadPreference::RP_PRIMARY));

src/Collection.php

@@ -93,7 +93,7 @@ class Collection
      * @param array $options  Command options
      * @return Traversable
      */
-    public function aggregate(array $pipeline, array $options = array())
+    public function aggregate(array $pipeline, array $options = [])
     {
         if ( ! isset($options['readPreference'])) {
             $options['readPreference'] = $this->readPreference;
@@ -117,7 +117,7 @@ class Collection
      * @param array   $options    Command options
      * @return BulkWriteResult
      */
-    public function bulkWrite(array $operations, array $options = array())
+    public function bulkWrite(array $operations, array $options = [])
     {
         if ( ! isset($options['writeConcern'])) {
             $options['writeConcern'] = $this->writeConcern;
@@ -137,7 +137,7 @@ class Collection
      * @param array        $options Command options
      * @return integer
      */
-    public function count($filter = array(), array $options = array())
+    public function count($filter = [], array $options = [])
     {
         if ( ! isset($options['readPreference'])) {
             $options['readPreference'] = $this->readPreference;
@@ -158,9 +158,9 @@ class Collection
      * @param array        $options Index options
      * @return string The name of the created index
      */
-    public function createIndex($key, array $options = array())
+    public function createIndex($key, array $options = [])
     {
-        return current($this->createIndexes(array(array('key' => $key) + $options)));
+        return current($this->createIndexes([['key' => $key] + $options]));
     }
 
     /**
@@ -203,7 +203,7 @@ class Collection
      * @param array        $options Command options
      * @return DeleteResult
      */
-    public function deleteMany($filter, array $options = array())
+    public function deleteMany($filter, array $options = [])
     {
         if ( ! isset($options['writeConcern'])) {
             $options['writeConcern'] = $this->writeConcern;
@@ -224,7 +224,7 @@ class Collection
      * @param array        $options Command options
      * @return DeleteResult
      */
-    public function deleteOne($filter, array $options = array())
+    public function deleteOne($filter, array $options = [])
     {
         if ( ! isset($options['writeConcern'])) {
             $options['writeConcern'] = $this->writeConcern;
@@ -245,7 +245,7 @@ class Collection
      * @param array        $options Command options
      * @return mixed[]
      */
-    public function distinct($fieldName, $filter = array(), array $options = array())
+    public function distinct($fieldName, $filter = [], array $options = [])
     {
         if ( ! isset($options['readPreference'])) {
             $options['readPreference'] = $this->readPreference;
@@ -313,7 +313,7 @@ class Collection
      * @param array        $options Additional options
      * @return Cursor
      */
-    public function find($filter = array(), array $options = array())
+    public function find($filter = [], array $options = [])
     {
         if ( ! isset($options['readPreference'])) {
             $options['readPreference'] = $this->readPreference;
@@ -334,7 +334,7 @@ class Collection
      * @param array        $options Additional options
      * @return object|null
      */
-    public function findOne($filter = array(), array $options = array())
+    public function findOne($filter = [], array $options = [])
     {
         if ( ! isset($options['readPreference'])) {
             $options['readPreference'] = $this->readPreference;
@@ -357,7 +357,7 @@ class Collection
      * @param array        $options Command options
      * @return object|null
      */
-    public function findOneAndDelete($filter, array $options = array())
+    public function findOneAndDelete($filter, array $options = [])
     {
         $operation = new FindOneAndDelete($this->databaseName, $this->collectionName, $filter, $options);
         $server = $this->manager->selectServer(new ReadPreference(ReadPreference::RP_PRIMARY));
@@ -380,7 +380,7 @@ class Collection
      * @param array        $options     Command options
      * @return object|null
      */
-    public function findOneAndReplace($filter, $replacement, array $options = array())
+    public function findOneAndReplace($filter, $replacement, array $options = [])
     {
         $operation = new FindOneAndReplace($this->databaseName, $this->collectionName, $filter, $replacement, $options);
         $server = $this->manager->selectServer(new ReadPreference(ReadPreference::RP_PRIMARY));
@@ -403,7 +403,7 @@ class Collection
      * @param array        $options Command options
      * @return object|null
      */
-    public function findOneAndUpdate($filter, $update, array $options = array())
+    public function findOneAndUpdate($filter, $update, array $options = [])
     {
         $operation = new FindOneAndUpdate($this->databaseName, $this->collectionName, $filter, $update, $options);
         $server = $this->manager->selectServer(new ReadPreference(ReadPreference::RP_PRIMARY));
@@ -451,7 +451,7 @@ class Collection
      * @param array            $options   Command options
      * @return InsertManyResult
      */
-    public function insertMany(array $documents, array $options = array())
+    public function insertMany(array $documents, array $options = [])
     {
         if ( ! isset($options['writeConcern'])) {
             $options['writeConcern'] = $this->writeConcern;
@@ -472,7 +472,7 @@ class Collection
      * @param array        $options  Command options
      * @return InsertOneResult
      */
-    public function insertOne($document, array $options = array())
+    public function insertOne($document, array $options = [])
     {
         if ( ! isset($options['writeConcern'])) {
             $options['writeConcern'] = $this->writeConcern;
@@ -490,7 +490,7 @@ class Collection
      * @see ListIndexes::__construct() for supported options
      * @return IndexInfoIterator
      */
-    public function listIndexes(array $options = array())
+    public function listIndexes(array $options = [])
     {
         $operation = new ListIndexes($this->databaseName, $this->collectionName, $options);
         $server = $this->manager->selectServer(new ReadPreference(ReadPreference::RP_PRIMARY));
@@ -508,7 +508,7 @@ class Collection
      * @param array        $options     Command options
      * @return UpdateResult
      */
-    public function replaceOne($filter, $replacement, array $options = array())
+    public function replaceOne($filter, $replacement, array $options = [])
     {
         if ( ! isset($options['writeConcern'])) {
             $options['writeConcern'] = $this->writeConcern;
@@ -530,7 +530,7 @@ class Collection
      * @param array        $options     Command options
      * @return UpdateResult
      */
-    public function updateMany($filter, $update, array $options = array())
+    public function updateMany($filter, $update, array $options = [])
     {
         if ( ! isset($options['writeConcern'])) {
             $options['writeConcern'] = $this->writeConcern;
@@ -552,7 +552,7 @@ class Collection
      * @param array        $options     Command options
      * @return UpdateResult
      */
-    public function updateOne($filter, $update, array $options = array())
+    public function updateOne($filter, $update, array $options = [])
     {
         if ( ! isset($options['writeConcern'])) {
             $options['writeConcern'] = $this->writeConcern;

src/Database.php

@@ -66,7 +66,7 @@ class Database
      * @param array  $options
      * @return object Command result document
      */
-    public function createCollection($collectionName, array $options = array())
+    public function createCollection($collectionName, array $options = [])
     {
         $operation = new CreateCollection($this->databaseName, $collectionName, $options);
         $server = $this->manager->selectServer(new ReadPreference(ReadPreference::RP_PRIMARY));
@@ -118,7 +118,7 @@ class Database
      * @param array $options
      * @return CollectionInfoIterator
      */
-    public function listCollections(array $options = array())
+    public function listCollections(array $options = [])
     {
         $operation = new ListCollections($this->databaseName, $options);
         $server = $this->manager->selectServer(new ReadPreference(ReadPreference::RP_PRIMARY));

src/Model/CollectionInfo.php

@@ -75,7 +75,7 @@ class CollectionInfo
      */
     public function getOptions()
     {
-        return isset($this->info['options']) ? (array) $this->info['options'] : array();
+        return isset($this->info['options']) ? (array) $this->info['options'] : [];
     }
 
     /**

src/Operation/Aggregate.php

@@ -60,7 +60,7 @@ class Aggregate implements Executable
      * @param array  $options        Command options
      * @throws InvalidArgumentException
      */
-    public function __construct($databaseName, $collectionName, array $pipeline, array $options = array())
+    public function __construct($databaseName, $collectionName, array $pipeline, array $options = [])
     {
         if (empty($pipeline)) {
             throw new InvalidArgumentException('$pipeline is empty');
@@ -80,10 +80,10 @@ class Aggregate implements Executable
             $expectedIndex += 1;
         }
 
-        $options += array(
+        $options += [
             'allowDiskUse' => false,
             'useCursor' => true,
-        );
+        ];
 
         if ( ! is_bool($options['allowDiskUse'])) {
             throw new InvalidArgumentTypeException('"allowDiskUse" option', $options['allowDiskUse'], 'boolean');
@@ -156,10 +156,10 @@ class Aggregate implements Executable
      */
     private function createCommand(Server $server, $isCursorSupported)
     {
-        $cmd = array(
+        $cmd = [
             'aggregate' => $this->collectionName,
             'pipeline' => $this->pipeline,
-        );
+        ];
 
         // Servers < 2.6 do not support any command options
         if ( ! $isCursorSupported) {
@@ -174,7 +174,7 @@ class Aggregate implements Executable
 
         if ($this->options['useCursor']) {
             $cmd['cursor'] = isset($this->options["batchSize"])
-                ? array('batchSize' => $this->options["batchSize"])
+                ? ['batchSize' => $this->options["batchSize"]]
                 : new stdClass;
         }
 

src/Operation/BulkWrite.php

@@ -66,7 +66,7 @@ class BulkWrite implements Executable
      * @param array   $options        Command options
      * @throws InvalidArgumentException
      */
-    public function __construct($databaseName, $collectionName, array $operations, array $options = array())
+    public function __construct($databaseName, $collectionName, array $operations, array $options = [])
     {
         if (empty($operations)) {
             throw new InvalidArgumentException('$operations is empty');
@@ -104,7 +104,7 @@ class BulkWrite implements Executable
 
                 case self::DELETE_MANY:
                 case self::DELETE_ONE:
-                    $operations[$i][$type][1] = array('limit' => ($type === self::DELETE_ONE ? 1 : 0));
+                    $operations[$i][$type][1] = ['limit' => ($type === self::DELETE_ONE ? 1 : 0)];
 
                     break;
 
@@ -122,7 +122,7 @@ class BulkWrite implements Executable
                     }
 
                     if ( ! isset($args[2])) {
-                        $args[2] = array();
+                        $args[2] = [];
                     }
 
                     if ( ! is_array($args[2])) {
@@ -130,7 +130,7 @@ class BulkWrite implements Executable
                     }
 
                     $args[2]['multi'] = false;
-                    $args[2] += array('upsert' => false);
+                    $args[2] += ['upsert' => false];
 
                     if ( ! is_bool($args[2]['upsert'])) {
                         throw new InvalidArgumentTypeException(sprintf('$operations[%d]["%s"][2]["upsert"]', $i, $type), $args[2]['upsert'], 'boolean');
@@ -155,7 +155,7 @@ class BulkWrite implements Executable
                     }
 
                     if ( ! isset($args[2])) {
-                        $args[2] = array();
+                        $args[2] = [];
                     }
 
                     if ( ! is_array($args[2])) {
@@ -163,7 +163,7 @@ class BulkWrite implements Executable
                     }
 
                     $args[2]['multi'] = ($type === self::UPDATE_MANY);
-                    $args[2] += array('upsert' => false);
+                    $args[2] += ['upsert' => false];
 
                     if ( ! is_bool($args[2]['upsert'])) {
                         throw new InvalidArgumentTypeException(sprintf('$operations[%d]["%s"][2]["upsert"]', $i, $type), $args[2]['upsert'], 'boolean');
@@ -180,9 +180,7 @@ class BulkWrite implements Executable
             $expectedIndex += 1;
         }
 
-        $options += array(
-            'ordered' => true,
-        );
+        $options += ['ordered' => true];
 
         if ( ! is_bool($options['ordered'])) {
             throw new InvalidArgumentTypeException('"ordered" option', $options['ordered'], 'boolean');
@@ -208,7 +206,7 @@ class BulkWrite implements Executable
     public function execute(Server $server)
     {
         $bulk = new Bulk(['ordered' => $this->options['ordered']]);
-        $insertedIds = array();
+        $insertedIds = [];
 
         foreach ($this->operations as $i => $operation) {
             $type = key($operation);

src/Operation/Count.php

@@ -48,7 +48,7 @@ class Count implements Executable
      * @param array        $options        Command options
      * @throws InvalidArgumentException
      */
-    public function __construct($databaseName, $collectionName, $filter = array(), array $options = array())
+    public function __construct($databaseName, $collectionName, $filter = [], array $options = [])
     {
         if ( ! is_array($filter) && ! is_object($filter)) {
             throw new InvalidArgumentTypeException('$filter', $filter, 'array or object');
@@ -119,15 +119,13 @@ class Count implements Executable
      */
     private function createCommand()
     {
-        $cmd = array(
-            'count' => $this->collectionName,
-        );
+        $cmd = ['count' => $this->collectionName];
 
         if ( ! empty($this->filter)) {
             $cmd['query'] = (object) $this->filter;
         }
 
-        foreach (array('hint', 'limit', 'maxTimeMS', 'skip') as $option) {
+        foreach (['hint', 'limit', 'maxTimeMS', 'skip'] as $option) {
             if (isset($this->options[$option])) {
                 $cmd[$option] = $this->options[$option];
             }

src/Operation/CreateCollection.php

@@ -23,7 +23,7 @@ class CreateCollection implements Executable
 
     private $databaseName;
     private $collectionName;
-    private $options = array();
+    private $options = [];
 
     /**
      * Constructs a create command.
@@ -57,7 +57,7 @@ class CreateCollection implements Executable
      * @param array  $options        Command options
      * @throws InvalidArgumentException
      */
-    public function __construct($databaseName, $collectionName, array $options = array())
+    public function __construct($databaseName, $collectionName, array $options = [])
     {
         if (isset($options['autoIndexId']) && ! is_bool($options['autoIndexId'])) {
             throw new InvalidArgumentTypeException('"autoIndexId" option', $options['autoIndexId'], 'boolean');
@@ -118,9 +118,9 @@ class CreateCollection implements Executable
      */
     private function createCommand()
     {
-        $cmd = array('create' => $this->collectionName);
+        $cmd = ['create' => $this->collectionName];
 
-        foreach (array('autoIndexId', 'capped', 'flags', 'max', 'maxTimeMS', 'size') as $option) {
+        foreach (['autoIndexId', 'capped', 'flags', 'max', 'maxTimeMS', 'size'] as $option) {
             if (isset($this->options[$option])) {
                 $cmd[$option] = $this->options[$option];
             }

src/Operation/CreateIndexes.php

@@ -24,7 +24,7 @@ class CreateIndexes implements Executable
 
     private $databaseName;
     private $collectionName;
-    private $indexes = array();
+    private $indexes = [];
 
     /**
      * Constructs a createIndexes command.
@@ -85,10 +85,10 @@ class CreateIndexes implements Executable
      */
     private function executeCommand(Server $server)
     {
-        $command = new Command(array(
+        $command = new Command([
             'createIndexes' => $this->collectionName,
             'indexes' => $this->indexes,
-        ));
+        ]);
 
         $cursor = $server->executeCommand($this->databaseName, $command);
         $result = current($cursor->toArray());

src/Operation/Delete.php

@@ -42,7 +42,7 @@ class Delete implements Executable
      * @param array        $options        Command options
      * @throws InvalidArgumentException
      */
-    public function __construct($databaseName, $collectionName, $filter, $limit, array $options = array())
+    public function __construct($databaseName, $collectionName, $filter, $limit, array $options = [])
     {
         if ( ! is_array($filter) && ! is_object($filter)) {
             throw new InvalidArgumentTypeException('$filter', $filter, 'array or object');
@@ -73,7 +73,7 @@ class Delete implements Executable
     public function execute(Server $server)
     {
         $bulk = new Bulk();
-        $bulk->delete($this->filter, array('limit' => $this->limit));
+        $bulk->delete($this->filter, ['limit' => $this->limit]);
 
         $writeConcern = isset($this->options['writeConcern']) ? $this->options['writeConcern'] : null;
         $writeResult = $server->executeBulkWrite($this->databaseName . '.' . $this->collectionName, $bulk, $writeConcern);

src/Operation/DeleteMany.php

@@ -30,7 +30,7 @@ class DeleteMany implements Executable
      * @param array        $options        Command options
      * @throws InvalidArgumentException
      */
-    public function __construct($databaseName, $collectionName, $filter, array $options = array())
+    public function __construct($databaseName, $collectionName, $filter, array $options = [])
     {
         $this->delete = new Delete($databaseName, $collectionName, $filter, 0, $options);
     }

src/Operation/DeleteOne.php

@@ -30,7 +30,7 @@ class DeleteOne implements Executable
      * @param array        $options        Command options
      * @throws InvalidArgumentException
      */
-    public function __construct($databaseName, $collectionName, $filter, array $options = array())
+    public function __construct($databaseName, $collectionName, $filter, array $options = [])
     {
         $this->delete = new Delete($databaseName, $collectionName, $filter, 1, $options);
     }

src/Operation/Distinct.php

@@ -42,7 +42,7 @@ class Distinct implements Executable
      * @param array        $options        Command options
      * @throws InvalidArgumentException
      */
-    public function __construct($databaseName, $collectionName, $fieldName, $filter = array(), array $options = array())
+    public function __construct($databaseName, $collectionName, $fieldName, $filter = [], array $options = [])
     {
         if ( ! is_array($filter) && ! is_object($filter)) {
             throw new InvalidArgumentTypeException('$filter', $filter, 'array or object');
@@ -95,10 +95,10 @@ class Distinct implements Executable
      */
     private function createCommand()
     {
-        $cmd = array(
+        $cmd = [
             'distinct' => $this->collectionName,
             'key' => $this->fieldName,
-        );
+        ];
 
         if ( ! empty($this->filter)) {
             $cmd['query'] = (object) $this->filter;

src/Operation/DropCollection.php

@@ -43,7 +43,7 @@ class DropCollection implements Executable
     public function execute(Server $server)
     {
         try {
-            $cursor = $server->executeCommand($this->databaseName, new Command(array('drop' => $this->collectionName)));
+            $cursor = $server->executeCommand($this->databaseName, new Command(['drop' => $this->collectionName]));
         } catch (DriverRuntimeException $e) {
             /* The server may return an error if the collection does not exist.
              * Check for an error message (unfortunately, there isn't a code)

src/Operation/DropDatabase.php

@@ -38,7 +38,7 @@ class DropDatabase implements Executable
      */
     public function execute(Server $server)
     {
-        $cursor = $server->executeCommand($this->databaseName, new Command(array('dropDatabase' => 1)));
+        $cursor = $server->executeCommand($this->databaseName, new Command(['dropDatabase' => 1]));
         $result = current($cursor->toArray());
 
         if (empty($result->ok)) {

src/Operation/DropIndexes.php

@@ -50,10 +50,10 @@ class DropIndexes implements Executable
      */
     public function execute(Server $server)
     {
-        $cmd = array(
+        $cmd = [
             'dropIndexes' => $this->collectionName,
             'index' => $this->indexName,
-        );
+        ];
 
         $cursor = $server->executeCommand($this->databaseName, new Command($cmd));
         $result = current($cursor->toArray());

src/Operation/Find.php

@@ -79,7 +79,7 @@ class Find implements Executable
      * @param array        $options        Command options
      * @throws InvalidArgumentException
      */
-    public function __construct($databaseName, $collectionName, $filter, array $options = array())
+    public function __construct($databaseName, $collectionName, $filter, array $options = [])
     {
         if ( ! is_array($filter) && ! is_object($filter)) {
             throw new InvalidArgumentTypeException('$filter', $filter, 'array or object');
@@ -172,7 +172,7 @@ class Find implements Executable
      */
     private function createQuery()
     {
-        $options = array();
+        $options = [];
 
         if ( ! empty($this->options['allowPartialResults'])) {
             $options['partial'] = true;
@@ -188,13 +188,13 @@ class Find implements Executable
             }
         }
 
-        foreach (array('batchSize', 'limit', 'skip', 'sort', 'noCursorTimeout', 'oplogReplay', 'projection') as $option) {
+        foreach (['batchSize', 'limit', 'skip', 'sort', 'noCursorTimeout', 'oplogReplay', 'projection'] as $option) {
             if (isset($this->options[$option])) {
                 $options[$option] = $this->options[$option];
             }
         }
 
-        $modifiers = empty($this->options['modifiers']) ? array() : (array) $this->options['modifiers'];
+        $modifiers = empty($this->options['modifiers']) ? [] : (array) $this->options['modifiers'];
 
         if (isset($options['comment'])) {
             $modifiers['$comment'] = $options['comment'];

src/Operation/FindAndModify.php

@@ -61,11 +61,11 @@ class FindAndModify implements Executable
      */
     public function __construct($databaseName, $collectionName, array $options)
     {
-        $options += array(
+        $options += [
             'new' => false,
             'remove' => false,
             'upsert' => false,
-        );
+        ];
 
         if (isset($options['fields']) && ! is_array($options['fields']) && ! is_object($options['fields'])) {
             throw new InvalidArgumentTypeException('"fields" option', $options['fields'], 'array or object');
@@ -153,9 +153,7 @@ class FindAndModify implements Executable
      */
     private function createCommand()
     {
-        $cmd = array(
-            'findAndModify' => $this->collectionName,
-        );
+        $cmd = ['findAndModify' => $this->collectionName];
 
         if ($this->options['remove']) {
             $cmd['remove'] = true;
@@ -164,7 +162,7 @@ class FindAndModify implements Executable
             $cmd['upsert'] = $this->options['upsert'];
         }
 
-        foreach (array('fields', 'query', 'sort', 'update') as $option) {
+        foreach (['fields', 'query', 'sort', 'update'] as $option) {
             if (isset($this->options[$option])) {
                 $cmd[$option] = (object) $this->options[$option];
             }

src/Operation/FindOne.php

@@ -52,7 +52,7 @@ class FindOne implements Executable
      * @param array        $options        Command options
      * @throws InvalidArgumentException
      */
-    public function __construct($databaseName, $collectionName, $filter, array $options = array())
+    public function __construct($databaseName, $collectionName, $filter, array $options = [])
     {
         if (isset($options['typeMap']) && ! is_array($options['typeMap'])) {
             throw new InvalidArgumentTypeException('"typeMap" option', $options['typeMap'], 'array');
@@ -62,7 +62,7 @@ class FindOne implements Executable
             $databaseName,
             $collectionName,
             $filter,
-            array('limit' => -1) + $options
+            ['limit' => -1] + $options
         );
 
         $this->options = $options;

src/Operation/FindOneAndDelete.php

@@ -38,7 +38,7 @@ class FindOneAndDelete implements Executable
      * @param array        $options        Command options
      * @throws InvalidArgumentException
      */
-    public function __construct($databaseName, $collectionName, $filter, array $options = array())
+    public function __construct($databaseName, $collectionName, $filter, array $options = [])
     {
         if ( ! is_array($filter) && ! is_object($filter)) {
             throw new InvalidArgumentTypeException('$filter', $filter, 'array or object');
@@ -57,10 +57,7 @@ class FindOneAndDelete implements Executable
         $this->findAndModify = new FindAndModify(
             $databaseName,
             $collectionName,
-            array(
-                'query' => $filter,
-                'remove' => true,
-            ) + $options
+            ['query' => $filter, 'remove' => true] + $options
         );
     }
 

src/Operation/FindOneAndReplace.php

@@ -49,7 +49,7 @@ class FindOneAndReplace implements Executable
      * @param array        $options        Command options
      * @throws InvalidArgumentException
      */
-    public function __construct($databaseName, $collectionName, $filter, $replacement, array $options = array())
+    public function __construct($databaseName, $collectionName, $filter, $replacement, array $options = [])
     {
         if ( ! is_array($filter) && ! is_object($filter)) {
             throw new InvalidArgumentTypeException('$filter', $filter, 'array or object');
@@ -63,10 +63,10 @@ class FindOneAndReplace implements Executable
             throw new InvalidArgumentException('First key in $replacement argument is an update operator');
         }
 
-        $options += array(
+        $options += [
             'returnDocument' => self::RETURN_DOCUMENT_BEFORE,
             'upsert' => false,
-        );
+        ];
 
         if (isset($options['projection']) && ! is_array($options['projection']) && ! is_object($options['projection'])) {
             throw new InvalidArgumentTypeException('"projection" option', $options['projection'], 'array or object');
@@ -92,10 +92,7 @@ class FindOneAndReplace implements Executable
         $this->findAndModify = new FindAndModify(
             $databaseName,
             $collectionName,
-            array(
-                'query' => $filter,
-                'update' => $replacement,
-            ) + $options
+            ['query' => $filter, 'update' => $replacement] + $options
         );
     }
 

src/Operation/FindOneAndUpdate.php

@@ -49,7 +49,7 @@ class FindOneAndUpdate implements Executable
      * @param array        $options        Command options
      * @throws InvalidArgumentException
      */
-    public function __construct($databaseName, $collectionName, $filter, $update, array $options = array())
+    public function __construct($databaseName, $collectionName, $filter, $update, array $options = [])
     {
         if ( ! is_array($filter) && ! is_object($filter)) {
             throw new InvalidArgumentTypeException('$filter', $filter, 'array or object');
@@ -63,10 +63,10 @@ class FindOneAndUpdate implements Executable
             throw new InvalidArgumentException('First key in $update argument is not an update operator');
         }
 
-        $options += array(
+        $options += [
             'returnDocument' => self::RETURN_DOCUMENT_BEFORE,
             'upsert' => false,
-        );
+        ];
 
         if (isset($options['projection']) && ! is_array($options['projection']) && ! is_object($options['projection'])) {
             throw new InvalidArgumentTypeException('"projection" option', $options['projection'], 'array or object');
@@ -92,10 +92,7 @@ class FindOneAndUpdate implements Executable
         $this->findAndModify = new FindAndModify(
             $databaseName,
             $collectionName,
-            array(
-                'query' => $filter,
-                'update' => $update,
-            ) + $options
+            ['query' => $filter, 'update' => $update] + $options
         );
     }
 

src/Operation/InsertMany.php

@@ -40,7 +40,7 @@ class InsertMany implements Executable
      * @param array            $options        Command options
      * @throws InvalidArgumentException
      */
-    public function __construct($databaseName, $collectionName, array $documents, array $options = array())
+    public function __construct($databaseName, $collectionName, array $documents, array $options = [])
     {
         if (empty($documents)) {
             throw new InvalidArgumentException('$documents is empty');
@@ -60,9 +60,7 @@ class InsertMany implements Executable
             $expectedIndex += 1;
         }
 
-        $options += array(
-            'ordered' => true,
-        );
+        $options += ['ordered' => true];
 
         if ( ! is_bool($options['ordered'])) {
             throw new InvalidArgumentTypeException('"ordered" option', $options['ordered'], 'boolean');
@@ -88,7 +86,7 @@ class InsertMany implements Executable
     public function execute(Server $server)
     {
         $bulk = new Bulk(['ordered' => $this->options['ordered']]);
-        $insertedIds = array();
+        $insertedIds = [];
 
         foreach ($this->documents as $i => $document) {
             $insertedId = $bulk->insert($document);

src/Operation/InsertOne.php

@@ -35,7 +35,7 @@ class InsertOne implements Executable
      * @param array        $options        Command options
      * @throws InvalidArgumentException
      */
-    public function __construct($databaseName, $collectionName, $document, array $options = array())
+    public function __construct($databaseName, $collectionName, $document, array $options = [])
     {
         if ( ! is_array($document) && ! is_object($document)) {
             throw new InvalidArgumentTypeException('$document', $document, 'array or object');

src/Operation/ListCollections.php

@@ -37,7 +37,7 @@ class ListCollections implements Executable
      * @param string $databaseName Database name
      * @param array  $options      Command options
      */
-    public function __construct($databaseName, array $options = array())
+    public function __construct($databaseName, array $options = [])
     {
         if (isset($options['filter']) && ! is_array($options['filter']) && ! is_object($options['filter'])) {
             throw new InvalidArgumentTypeException('"filter" option', $options['filter'], 'array or object');
@@ -74,7 +74,7 @@ class ListCollections implements Executable
      */
     private function executeCommand(Server $server)
     {
-        $cmd = array('listCollections' => 1);
+        $cmd = ['listCollections' => 1];
 
         if ( ! empty($this->options['filter'])) {
             $cmd['filter'] = (object) $this->options['filter'];
@@ -85,7 +85,7 @@ class ListCollections implements Executable
         }
 
         $cursor = $server->executeCommand($this->databaseName, new Command($cmd));
-        $cursor->setTypeMap(array('root' => 'array', 'document' => 'array'));
+        $cursor->setTypeMap(['root' => 'array', 'document' => 'array']);
 
         return new CollectionInfoCommandIterator($cursor);
     }
@@ -100,7 +100,7 @@ class ListCollections implements Executable
      */
     private function executeLegacy(Server $server)
     {
-        $filter = empty($this->options['filter']) ? array() : (array) $this->options['filter'];
+        $filter = empty($this->options['filter']) ? [] : (array) $this->options['filter'];
 
         if (array_key_exists('name', $filter)) {
             if ( ! is_string($filter['name'])) {
@@ -111,11 +111,11 @@ class ListCollections implements Executable
         }
 
         $options = isset($this->options['maxTimeMS'])
-            ? array('modifiers' => array('$maxTimeMS' => $this->options['maxTimeMS']))
-            : array();
+            ? ['modifiers' => ['$maxTimeMS' => $this->options['maxTimeMS']]]
+            : [];
 
         $cursor = $server->executeQuery($this->databaseName . '.system.namespaces', new Query($filter, $options));
-        $cursor->setTypeMap(array('root' => 'array', 'document' => 'array'));
+        $cursor->setTypeMap(['root' => 'array', 'document' => 'array']);
 
         return new CollectionInfoLegacyIterator($cursor);
     }

src/Operation/ListDatabases.php

@@ -30,7 +30,7 @@ class ListDatabases implements Executable
      *
      * @param array $options Command options
      */
-    public function __construct(array $options = array())
+    public function __construct(array $options = [])
     {
         if (isset($options['maxTimeMS']) && ! is_integer($options['maxTimeMS'])) {
             throw new InvalidArgumentTypeException('"maxTimeMS" option', $options['maxTimeMS'], 'integer');
@@ -48,14 +48,14 @@ class ListDatabases implements Executable
      */
     public function execute(Server $server)
     {
-        $cmd = array('listDatabases' => 1);
+        $cmd = ['listDatabases' => 1];
 
         if (isset($this->options['maxTimeMS'])) {
             $cmd['maxTimeMS'] = $this->options['maxTimeMS'];
         }
 
         $cursor = $server->executeCommand('admin', new Command($cmd));
-        $cursor->setTypeMap(array('root' => 'array', 'document' => 'array'));
+        $cursor->setTypeMap(['root' => 'array', 'document' => 'array']);
         $result = current($cursor->toArray());
 
         if (empty($result['ok'])) {

src/Operation/ListIndexes.php

@@ -39,7 +39,7 @@ class ListIndexes implements Executable
      * @param string $collectionName Collection name
      * @param array  $options        Command options
      */
-    public function __construct($databaseName, $collectionName, array $options = array())
+    public function __construct($databaseName, $collectionName, array $options = [])
     {
         if (isset($options['maxTimeMS']) && ! is_integer($options['maxTimeMS'])) {
             throw new InvalidArgumentTypeException('"maxTimeMS" option', $options['maxTimeMS'], 'integer');
@@ -73,7 +73,7 @@ class ListIndexes implements Executable
      */
     private function executeCommand(Server $server)
     {
-        $cmd = array('listIndexes' => $this->collectionName);
+        $cmd = ['listIndexes' => $this->collectionName];
 
         if (isset($this->options['maxTimeMS'])) {
             $cmd['maxTimeMS'] = $this->options['maxTimeMS'];
@@ -93,7 +93,7 @@ class ListIndexes implements Executable
             throw $e;
         }
 
-        $cursor->setTypeMap(array('root' => 'array', 'document' => 'array'));
+        $cursor->setTypeMap(['root' => 'array', 'document' => 'array']);
 
         return new IndexInfoIteratorIterator($cursor);
     }
@@ -107,14 +107,14 @@ class ListIndexes implements Executable
      */
     private function executeLegacy(Server $server)
     {
-        $filter = array('ns' => $this->databaseName . '.' . $this->collectionName);
+        $filter = ['ns' => $this->databaseName . '.' . $this->collectionName];
 
         $options = isset($this->options['maxTimeMS'])
-            ? array('modifiers' => array('$maxTimeMS' => $this->options['maxTimeMS']))
-            : array();
+            ? ['modifiers' => ['$maxTimeMS' => $this->options['maxTimeMS']]]
+            : [];
 
         $cursor = $server->executeQuery($this->databaseName . '.system.indexes', new Query($filter, $options));
-        $cursor->setTypeMap(array('root' => 'array', 'document' => 'array'));
+        $cursor->setTypeMap(['root' => 'array', 'document' => 'array']);
 
         return new IndexInfoIteratorIterator($cursor);
     }

src/Operation/ReplaceOne.php

@@ -35,7 +35,7 @@ class ReplaceOne implements Executable
      * @param array        $options        Command options
      * @throws InvalidArgumentException
      */
-    public function __construct($databaseName, $collectionName, $filter, $replacement, array $options = array())
+    public function __construct($databaseName, $collectionName, $filter, $replacement, array $options = [])
     {
         if ( ! is_array($replacement) && ! is_object($replacement)) {
             throw new InvalidArgumentTypeException('$replacement', $replacement, 'array or object');
@@ -50,7 +50,7 @@ class ReplaceOne implements Executable
             $collectionName,
             $filter,
             $replacement,
-            array('multi' => false) + $options
+            ['multi' => false] + $options
         );
     }
 

src/Operation/Update.php

@@ -48,7 +48,7 @@ class Update implements Executable
      * @param array        $options        Command options
      * @throws InvalidArgumentException
      */
-    public function __construct($databaseName, $collectionName, $filter, $update, array $options = array())
+    public function __construct($databaseName, $collectionName, $filter, $update, array $options = [])
     {
         if ( ! is_array($filter) && ! is_object($filter)) {
             throw new InvalidArgumentTypeException('$filter', $filter, 'array or object');
@@ -58,10 +58,10 @@ class Update implements Executable
             throw new InvalidArgumentTypeException('$update', $filter, 'array or object');
         }
 
-        $options += array(
+        $options += [
             'multi' => false,
             'upsert' => false,
-        );
+        ];
 
         if ( ! is_bool($options['multi'])) {
             throw new InvalidArgumentTypeException('"multi" option', $options['multi'], 'boolean');
@@ -95,10 +95,10 @@ class Update implements Executable
      */
     public function execute(Server $server)
     {
-        $options = array(
+        $options = [
             'multi' => $this->options['multi'],
             'upsert' => $this->options['upsert'],
-        );
+        ];
 
         $bulk = new Bulk();
         $bulk->update($this->filter, $this->update, $options);

src/Operation/UpdateMany.php

@@ -35,7 +35,7 @@ class UpdateMany implements Executable
      * @param array        $options        Command options
      * @throws InvalidArgumentException
      */
-    public function __construct($databaseName, $collectionName, $filter, $update, array $options = array())
+    public function __construct($databaseName, $collectionName, $filter, $update, array $options = [])
     {
         if ( ! is_array($update) && ! is_object($update)) {
             throw new InvalidArgumentTypeException('$update', $update, 'array or object');
@@ -50,7 +50,7 @@ class UpdateMany implements Executable
             $collectionName,
             $filter,
             $update,
-            array('multi' => true) + $options
+            ['multi' => true] + $options
         );
     }
 

src/Operation/UpdateOne.php

@@ -35,7 +35,7 @@ class UpdateOne implements Executable
      * @param array        $options        Command options
      * @throws InvalidArgumentException
      */
-    public function __construct($databaseName, $collectionName, $filter, $update, array $options = array())
+    public function __construct($databaseName, $collectionName, $filter, $update, array $options = [])
     {
         if ( ! is_array($update) && ! is_object($update)) {
             throw new InvalidArgumentTypeException('$update', $update, 'array or object');
@@ -50,7 +50,7 @@ class UpdateOne implements Executable
             $collectionName,
             $filter,
             $update,
-            array('multi' => false) + $options
+            ['multi' => false] + $options
         );
     }
 

tests/Collection/BulkWriteFunctionalTest.php

@@ -17,10 +17,10 @@ class BulkWriteFunctionalTest extends FunctionalTestCase
 
     public function testInserts()
     {
-        $ops = array(
-            array('insertOne' => array(array('_id' => 1, 'x' => 11))),
-            array('insertOne' => array(array('x' => 22))),
-        );
+        $ops = [
+            ['insertOne' => [['_id' => 1, 'x' => 11]]],
+            ['insertOne' => [['x' => 22]]],
+        ];
 
         $result = $this->collection->bulkWrite($ops);
         $this->assertInstanceOf('MongoDB\BulkWriteResult', $result);
@@ -30,10 +30,10 @@ class BulkWriteFunctionalTest extends FunctionalTestCase
         $this->assertSame(1, $insertedIds[0]);
         $this->assertInstanceOf('MongoDB\BSON\ObjectId', $insertedIds[1]);
 
-        $expected = array(
-            array('_id' => $insertedIds[0], 'x' => 11),
-            array('_id' => $insertedIds[1], 'x' => 22),
-        );
+        $expected = [
+            ['_id' => $insertedIds[0], 'x' => 11],
+            ['_id' => $insertedIds[1], 'x' => 22],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
@@ -42,13 +42,13 @@ class BulkWriteFunctionalTest extends FunctionalTestCase
     {
         $this->createFixtures(4);
 
-        $ops = array(
-            array('updateOne' => array(array('_id' => 2), array('$inc' => array('x' => 1)))),
-            array('updateMany' => array(array('_id' => array('$gt' => 2)), array('$inc' => array('x' => -1)))),
-            array('updateOne' => array(array('_id' => 5), array('$set' => array('x' => 55)), array('upsert' => true))),
-            array('updateOne' => array(array('x' => 66), array('$set' => array('x' => 66)), array('upsert' => true))),
-            array('updateMany' => array(array('x' => array('$gt' => 50)), array('$inc' => array('x' => 1)))),
-        );
+        $ops = [
+            ['updateOne' => [['_id' => 2], ['$inc' => ['x' => 1]]]],
+            ['updateMany' => [['_id' => ['$gt' => 2]], ['$inc' => ['x' => -1]]]],
+            ['updateOne' => [['_id' => 5], ['$set' => ['x' => 55]], ['upsert' => true]]],
+            ['updateOne' => [['x' => 66], ['$set' => ['x' => 66]], ['upsert' => true]]],
+            ['updateMany' => [['x' => ['$gt' => 50]], ['$inc' => ['x' => 1]]]],
+        ];
 
         $result = $this->collection->bulkWrite($ops);
         $this->assertInstanceOf('MongoDB\BulkWriteResult', $result);
@@ -60,14 +60,14 @@ class BulkWriteFunctionalTest extends FunctionalTestCase
         $this->assertSame(5, $upsertedIds[2]);
         $this->assertInstanceOf('MongoDB\BSON\ObjectId', $upsertedIds[3]);
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 23),
-            array('_id' => 3, 'x' => 32),
-            array('_id' => 4, 'x' => 43),
-            array('_id' => 5, 'x' => 56),
-            array('_id' => $upsertedIds[3], 'x' => 67),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 23],
+            ['_id' => 3, 'x' => 32],
+            ['_id' => 4, 'x' => 43],
+            ['_id' => 5, 'x' => 56],
+            ['_id' => $upsertedIds[3], 'x' => 67],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
@@ -76,18 +76,18 @@ class BulkWriteFunctionalTest extends FunctionalTestCase
     {
         $this->createFixtures(4);
 
-        $ops = array(
-            array('deleteOne' => array(array('_id' => 1))),
-            array('deleteMany' => array(array('_id' => array('$gt' => 2)))),
-        );
+        $ops = [
+            ['deleteOne' => [['_id' => 1]]],
+            ['deleteMany' => [['_id' => ['$gt' => 2]]]],
+        ];
 
         $result = $this->collection->bulkWrite($ops);
         $this->assertInstanceOf('MongoDB\BulkWriteResult', $result);
         $this->assertSame(3, $result->getDeletedCount());
 
-        $expected = array(
-            array('_id' => 2, 'x' => 22),
-        );
+        $expected = [
+            ['_id' => 2, 'x' => 22],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
@@ -96,32 +96,32 @@ class BulkWriteFunctionalTest extends FunctionalTestCase
     {
         $this->createFixtures(3);
 
-        $ops = array(
-            array('updateOne' => array(array('_id' => array('$gt' => 1)), array('$inc' => array('x' => 1)))),
-            array('updateMany' => array(array('_id' => array('$gt' => 1)), array('$inc' => array('x' => 1)))),
-            array('insertOne' => array(array('_id' => 4, 'x' => 44))),
-            array('deleteMany' => array(array('x' => array('$nin' => array(24, 34))))),
-            array('replaceOne' => array(array('_id' => 4), array('_id' => 4, 'x' => 44), array('upsert' => true))),
-        );
+        $ops = [
+            ['updateOne' => [['_id' => ['$gt' => 1]], ['$inc' => ['x' => 1]]]],
+            ['updateMany' => [['_id' => ['$gt' => 1]], ['$inc' => ['x' => 1]]]],
+            ['insertOne' => [['_id' => 4, 'x' => 44]]],
+            ['deleteMany' => [['x' => ['$nin' => [24, 34]]]]],
+            ['replaceOne' => [['_id' => 4], ['_id' => 4, 'x' => 44], ['upsert' => true]]],
+        ];
 
         $result = $this->collection->bulkWrite($ops);
         $this->assertInstanceOf('MongoDB\BulkWriteResult', $result);
 
         $this->assertSame(1, $result->getInsertedCount());
-        $this->assertSame(array(2 => 4), $result->getInsertedIds());
+        $this->assertSame([2 => 4], $result->getInsertedIds());
 
         $this->assertSame(3, $result->getMatchedCount());
         $this->omitModifiedCount or $this->assertSame(3, $result->getModifiedCount());
         $this->assertSame(1, $result->getUpsertedCount());
-        $this->assertSame(array(4 => 4), $result->getUpsertedIds());
+        $this->assertSame([4 => 4], $result->getUpsertedIds());
 
         $this->assertSame(2, $result->getDeletedCount());
 
-        $expected = array(
-            array('_id' => 2, 'x' => 24),
-            array('_id' => 3, 'x' => 34),
-            array('_id' => 4, 'x' => 44),
-        );
+        $expected = [
+            ['_id' => 2, 'x' => 24],
+            ['_id' => 3, 'x' => 34],
+            ['_id' => 4, 'x' => 44],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
@@ -132,9 +132,9 @@ class BulkWriteFunctionalTest extends FunctionalTestCase
      */
     public function testUnknownOperation()
     {
-        $this->collection->bulkWrite(array(
-            array('foo' => array(array('_id' => 1))),
-        ));
+        $this->collection->bulkWrite([
+            ['foo' => [['_id' => 1]]],
+        ]);
     }
 
     /**
@@ -149,17 +149,17 @@ class BulkWriteFunctionalTest extends FunctionalTestCase
 
     public function provideOpsWithMissingArguments()
     {
-        return array(
-            array(array(array('insertOne' => array()))),
-            array(array(array('updateOne' => array()))),
-            array(array(array('updateOne' => array(array('_id' => 1))))),
-            array(array(array('updateMany' => array()))),
-            array(array(array('updateMany' => array(array('_id' => 1))))),
-            array(array(array('replaceOne' => array()))),
-            array(array(array('replaceOne' => array(array('_id' => 1))))),
-            array(array(array('deleteOne' => array()))),
-            array(array(array('deleteMany' => array()))),
-        );
+        return [
+            [[['insertOne' => []]]],
+            [[['updateOne' => []]]],
+            [[['updateOne' => [['_id' => 1]]]]],
+            [[['updateMany' => []]]],
+            [[['updateMany' => [['_id' => 1]]]]],
+            [[['replaceOne' => []]]],
+            [[['replaceOne' => [['_id' => 1]]]]],
+            [[['deleteOne' => []]]],
+            [[['deleteMany' => []]]],
+        ];
     }
 
     /**
@@ -168,9 +168,9 @@ class BulkWriteFunctionalTest extends FunctionalTestCase
      */
     public function testUpdateOneRequiresUpdateOperators()
     {
-        $this->collection->bulkWrite(array(
-            array('updateOne' => array(array('_id' => 1), array('x' => 1))),
-        ));
+        $this->collection->bulkWrite([
+            ['updateOne' => [['_id' => 1], ['x' => 1]]],
+        ]);
     }
 
     /**
@@ -179,9 +179,9 @@ class BulkWriteFunctionalTest extends FunctionalTestCase
      */
     public function testUpdateManyRequiresUpdateOperators()
     {
-        $this->collection->bulkWrite(array(
-            array('updateMany' => array(array('_id' => array('$gt' => 1)), array('x' => 1))),
-        ));
+        $this->collection->bulkWrite([
+            ['updateMany' => [['_id' => ['$gt' => 1]], ['x' => 1]]],
+        ]);
     }
 
     /**
@@ -190,9 +190,9 @@ class BulkWriteFunctionalTest extends FunctionalTestCase
      */
     public function testReplaceOneRequiresReplacementDocument()
     {
-        $this->collection->bulkWrite(array(
-            array('replaceOne' => array(array('_id' => 1), array('$inc' => array('x' => 1)))),
-        ));
+        $this->collection->bulkWrite([
+            ['replaceOne' => [['_id' => 1], ['$inc' => ['x' => 1]]]],
+        ]);
     }
 
     /**
@@ -205,10 +205,10 @@ class BulkWriteFunctionalTest extends FunctionalTestCase
         $bulkWrite = new BulkWrite(['ordered' => true]);
 
         for ($i = 1; $i <= $n; $i++) {
-            $bulkWrite->insert(array(
+            $bulkWrite->insert([
                 '_id' => $i,
                 'x' => (integer) ($i . $i),
-            ));
+            ]);
         }
 
         $result = $this->manager->executeBulkWrite($this->getNamespace(), $bulkWrite);

tests/Collection/CollectionFunctionalTest.php

@@ -22,13 +22,13 @@ class CollectionFunctionalTest extends FunctionalTestCase
 
     public function provideInvalidNamespaceValues()
     {
-        return array(
-            array(null),
-            array(''),
-            array('db_collection'),
-            array('db'),
-            array('.collection'),
-        );
+        return [
+            [null],
+            [''],
+            ['db_collection'],
+            ['db'],
+            ['.collection'],
+        ];
     }
 
     public function testToString()
@@ -53,7 +53,7 @@ class CollectionFunctionalTest extends FunctionalTestCase
 
     public function testDrop()
     {
-        $writeResult = $this->collection->insertOne(array('x' => 1));
+        $writeResult = $this->collection->insertOne(['x' => 1]);
         $this->assertEquals(1, $writeResult->getInsertedCount());
 
         $commandResult = $this->collection->drop();
@@ -65,13 +65,13 @@ class CollectionFunctionalTest extends FunctionalTestCase
     {
         $this->createFixtures(5);
 
-        $filter = array('_id' => array('$lt' => 5));
-        $options = array(
+        $filter = ['_id' => ['$lt' => 5]];
+        $options = [
             'skip' => 1,
-            'sort' => array('x' => -1),
-        );
+            'sort' => ['x' => -1],
+        ];
 
-        $expected = (object) array('_id' => 3, 'x' => 33);
+        $expected = (object) ['_id' => 3, 'x' => 33];
 
         $this->assertEquals($expected, $this->collection->findOne($filter, $options));
     }
@@ -86,10 +86,10 @@ class CollectionFunctionalTest extends FunctionalTestCase
         $bulkWrite = new BulkWrite(['ordered' => true]);
 
         for ($i = 1; $i <= $n; $i++) {
-            $bulkWrite->insert(array(
+            $bulkWrite->insert([
                 '_id' => $i,
                 'x' => (integer) ($i . $i),
-            ));
+            ]);
         }
 
         $result = $this->manager->executeBulkWrite($this->getNamespace(), $bulkWrite);

tests/Collection/CrudSpec/AggregateFunctionalTest.php

@@ -25,17 +25,17 @@ class AggregateFunctionalTest extends FunctionalTestCase
     public function testAggregateWithMultipleStages()
     {
         $cursor = $this->collection->aggregate(
-            array(
-                array('$sort' => array('x' => 1)),
-                array('$match' => array('_id' => array('$gt' => 1))),
-            ),
-            array('batchSize' => 2)
+            [
+                ['$sort' => ['x' => 1]],
+                ['$match' => ['_id' => ['$gt' => 1]]],
+            ],
+            ['batchSize' => 2]
         );
 
-        $expected = array(
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $cursor);
     }
@@ -53,17 +53,17 @@ class AggregateFunctionalTest extends FunctionalTestCase
         $operation->execute($this->getPrimaryServer());
 
         $this->collection->aggregate(
-            array(
-                array('$sort' => array('x' => 1)),
-                array('$match' => array('_id' => array('$gt' => 1))),
-                array('$out' => $outputCollection->getCollectionName()),
-            )
+            [
+                ['$sort' => ['x' => 1]],
+                ['$match' => ['_id' => ['$gt' => 1]]],
+                ['$out' => $outputCollection->getCollectionName()],
+            ]
         );
 
-        $expected = array(
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $outputCollection->find());
 

tests/Collection/CrudSpec/CountFunctionalTest.php

@@ -23,15 +23,15 @@ class CountFunctionalTest extends FunctionalTestCase
 
     public function testCountWithFilter()
     {
-        $filter = array('_id' => array('$gt' => 1));
+        $filter = ['_id' => ['$gt' => 1]];
 
         $this->assertSame(2, $this->collection->count($filter));
     }
 
     public function testCountWithSkipAndLimit()
     {
-        $filter = array();
-        $options = array('skip' => 1, 'limit' => 3);
+        $filter = [];
+        $options = ['skip' => 1, 'limit' => 3];
 
         $this->assertSame(2, $this->collection->count($filter, $options));
     }

tests/Collection/CrudSpec/DeleteManyFunctionalTest.php

@@ -18,30 +18,30 @@ class DeleteManyFunctionalTest extends FunctionalTestCase
 
     public function testDeleteManyWhenManyDocumentsMatch()
     {
-        $filter = array('_id' => array('$gt' => 1));
+        $filter = ['_id' => ['$gt' => 1]];
 
         $result = $this->collection->deleteMany($filter);
         $this->assertSame(2, $result->getDeletedCount());
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testDeleteManyWhenNoDocumentsMatch()
     {
-        $filter = array('_id' => 4);
+        $filter = ['_id' => 4];
 
         $result = $this->collection->deleteMany($filter);
         $this->assertSame(0, $result->getDeletedCount());
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }

tests/Collection/CrudSpec/DeleteOneFunctionalTest.php

@@ -18,46 +18,46 @@ class DeleteOneFunctionalTest extends FunctionalTestCase
 
     public function testDeleteOneWhenManyDocumentsMatch()
     {
-        $filter = array('_id' => array('$gt' => 1));
+        $filter = ['_id' => ['$gt' => 1]];
 
         $result = $this->collection->deleteOne($filter);
         $this->assertSame(1, $result->getDeletedCount());
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testDeleteOneWhenOneDocumentMatches()
     {
-        $filter = array('_id' => 2);
+        $filter = ['_id' => 2];
 
         $result = $this->collection->deleteOne($filter);
         $this->assertSame(1, $result->getDeletedCount());
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testDeleteOneWhenNoDocumentsMatch()
     {
-        $filter = array('_id' => 4);
+        $filter = ['_id' => 4];
 
         $result = $this->collection->deleteOne($filter);
         $this->assertSame(0, $result->getDeletedCount());
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }

tests/Collection/CrudSpec/DistinctFunctionalTest.php

@@ -18,13 +18,13 @@ class DistinctFunctionalTest extends FunctionalTestCase
 
     public function testDistinctWithoutFilter()
     {
-        $this->assertSame(array(11, 22, 33), $this->collection->distinct('x'));
+        $this->assertSame([11, 22, 33], $this->collection->distinct('x'));
     }
 
     public function testDistinctWithFilter()
     {
-        $filter = array('_id' => array('$gt' => 1));
+        $filter = ['_id' => ['$gt' => 1]];
 
-        $this->assertSame(array(22, 33), $this->collection->distinct('x', $filter));
+        $this->assertSame([22, 33], $this->collection->distinct('x', $filter));
     }
 }

tests/Collection/CrudSpec/FindFunctionalTest.php

@@ -18,46 +18,46 @@ class FindFunctionalTest extends FunctionalTestCase
 
     public function testFindWithFilter()
     {
-        $filter = array('_id' => 1);
+        $filter = ['_id' => 1];
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find($filter));
     }
 
     public function testFindWithFilterSortSkipAndLimit()
     {
-        $filter = array('_id' => array('$gt' => 2));
-        $options = array(
-            'sort' => array('_id' => 1),
+        $filter = ['_id' => ['$gt' => 2]];
+        $options = [
+            'sort' => ['_id' => 1],
             'skip' => 2,
             'limit' => 2,
-        );
+        ];
 
-        $expected = array(
-            array('_id' => 5, 'x' => 55),
-        );
+        $expected = [
+            ['_id' => 5, 'x' => 55],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find($filter, $options));
     }
 
     public function testFindWithLimitSortAndBatchSize()
     {
-        $filter = array();
-        $options = array(
-            'sort' => array('_id' => 1),
+        $filter = [];
+        $options = [
+            'sort' => ['_id' => 1],
             'limit' => 4,
             'batchSize' => 2,
-        );
+        ];
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-            array('_id' => 4, 'x' => 44),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+            ['_id' => 4, 'x' => 44],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find($filter, $options));
     }

tests/Collection/CrudSpec/FindOneAndDeleteFunctionalTest.php

@@ -18,58 +18,58 @@ class FindOneAndDeleteFunctionalTest extends FunctionalTestCase
 
     public function testFindOneAndDeleteWhenManyDocumentsMatch()
     {
-        $filter = array('_id' => array('$gt' => 1));
-        $options = array(
-            'projection' => array('x' => 1, '_id' => 0),
-            'sort' => array('x' => 1),
-        );
+        $filter = ['_id' => ['$gt' => 1]];
+        $options = [
+            'projection' => ['x' => 1, '_id' => 0],
+            'sort' => ['x' => 1],
+        ];
 
         $document = $this->collection->findOneAndDelete($filter, $options);
-        $this->assertSameDocument(array('x' => 22), $document);
+        $this->assertSameDocument(['x' => 22], $document);
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testFindOneAndDeleteWhenOneDocumentMatches()
     {
-        $filter = array('_id' => 2);
-        $options = array(
-            'projection' => array('x' => 1, '_id' => 0),
-            'sort' => array('x' => 1),
-        );
+        $filter = ['_id' => 2];
+        $options = [
+            'projection' => ['x' => 1, '_id' => 0],
+            'sort' => ['x' => 1],
+        ];
 
         $document = $this->collection->findOneAndDelete($filter, $options);
-        $this->assertSameDocument(array('x' => 22), $document);
+        $this->assertSameDocument(['x' => 22], $document);
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testFindOneAndDeleteWhenNoDocumentsMatch()
     {
-        $filter = array('_id' => 4);
-        $options = array(
-            'projection' => array('x' => 1, '_id' => 0),
-            'sort' => array('x' => 1),
-        );
+        $filter = ['_id' => 4];
+        $options = [
+            'projection' => ['x' => 1, '_id' => 0],
+            'sort' => ['x' => 1],
+        ];
 
         $document = $this->collection->findOneAndDelete($filter, $options);
         $this->assertNull($document);
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }

tests/Collection/CrudSpec/FindOneAndReplaceFunctionalTest.php

@@ -21,178 +21,178 @@ class FindOneAndReplaceFunctionalTest extends FunctionalTestCase
 
     public function testFindOneAndReplaceWhenManyDocumentsMatchReturningDocumentBeforeModification()
     {
-        $filter = array('_id' => array('$gt' => 1));
-        $replacement = array('x' => 32);
-        $options = array(
-            'projection' => array('x' => 1, '_id' => 0),
-            'sort' => array('x' => 1),
-        );
+        $filter = ['_id' => ['$gt' => 1]];
+        $replacement = ['x' => 32];
+        $options = [
+            'projection' => ['x' => 1, '_id' => 0],
+            'sort' => ['x' => 1],
+        ];
 
         $document = $this->collection->findOneAndReplace($filter, $replacement, $options);
-        $this->assertSameDocument(array('x' => 22), $document);
+        $this->assertSameDocument(['x' => 22], $document);
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 32),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 32],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testFindOneAndReplaceWhenManyDocumentsMatchReturningDocumentAfterModification()
     {
-        $filter = array('_id' => array('$gt' => 1));
-        $replacement = array('x' => 32);
-        $options = array(
-            'projection' => array('x' => 1, '_id' => 0),
-            'sort' => array('x' => 1),
+        $filter = ['_id' => ['$gt' => 1]];
+        $replacement = ['x' => 32];
+        $options = [
+            'projection' => ['x' => 1, '_id' => 0],
+            'sort' => ['x' => 1],
             'returnDocument' => FindOneAndReplace::RETURN_DOCUMENT_AFTER,
-        );
+        ];
 
         $document = $this->collection->findOneAndReplace($filter, $replacement, $options);
-        $this->assertSameDocument(array('x' => 32), $document);
+        $this->assertSameDocument(['x' => 32], $document);
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 32),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 32],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testFindOneAndReplaceWhenOneDocumentMatchesReturningDocumentBeforeModification()
     {
-        $filter = array('_id' => 2);
-        $replacement = array('x' => 32);
-        $options = array(
-            'projection' => array('x' => 1, '_id' => 0),
-            'sort' => array('x' => 1),
-        );
+        $filter = ['_id' => 2];
+        $replacement = ['x' => 32];
+        $options = [
+            'projection' => ['x' => 1, '_id' => 0],
+            'sort' => ['x' => 1],
+        ];
 
         $document = $this->collection->findOneAndReplace($filter, $replacement, $options);
-        $this->assertSameDocument(array('x' => 22), $document);
+        $this->assertSameDocument(['x' => 22], $document);
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 32),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 32],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testFindOneAndReplaceWhenOneDocumentMatchesReturningDocumentAfterModification()
     {
-        $filter = array('_id' => 2);
-        $replacement = array('x' => 32);
-        $options = array(
-            'projection' => array('x' => 1, '_id' => 0),
-            'sort' => array('x' => 1),
+        $filter = ['_id' => 2];
+        $replacement = ['x' => 32];
+        $options = [
+            'projection' => ['x' => 1, '_id' => 0],
+            'sort' => ['x' => 1],
             'returnDocument' => FindOneAndReplace::RETURN_DOCUMENT_AFTER,
-        );
+        ];
 
         $document = $this->collection->findOneAndReplace($filter, $replacement, $options);
-        $this->assertSameDocument(array('x' => 32), $document);
+        $this->assertSameDocument(['x' => 32], $document);
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 32),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 32],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testFindOneAndReplaceWhenNoDocumentsMatchReturningDocumentBeforeModification()
     {
-        $filter = array('_id' => 4);
-        $replacement = array('x' => 44);
-        $options = array(
-            'projection' => array('x' => 1, '_id' => 0),
-            'sort' => array('x' => 1),
-        );
+        $filter = ['_id' => 4];
+        $replacement = ['x' => 44];
+        $options = [
+            'projection' => ['x' => 1, '_id' => 0],
+            'sort' => ['x' => 1],
+        ];
 
         $document = $this->collection->findOneAndReplace($filter, $replacement, $options);
         $this->assertNull($document);
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testFindOneAndReplaceWithUpsertWhenNoDocumentsMatchReturningDocumentBeforeModification()
     {
-        $filter = array('_id' => 4);
+        $filter = ['_id' => 4];
         // Server 2.4 and earlier requires any custom ID to also be in the replacement document
-        $replacement = array('_id' => 4, 'x' => 44);
-        $options = array(
-            'projection' => array('x' => 1, '_id' => 0),
-            'sort' => array('x' => 1),
+        $replacement = ['_id' => 4, 'x' => 44];
+        $options = [
+            'projection' => ['x' => 1, '_id' => 0],
+            'sort' => ['x' => 1],
             'upsert' => true,
-        );
+        ];
 
         $document = $this->collection->findOneAndReplace($filter, $replacement, $options);
         $this->assertNull($document);
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-            array('_id' => 4, 'x' => 44),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+            ['_id' => 4, 'x' => 44],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testFindOneAndReplaceWhenNoDocumentsMatchReturningDocumentAfterModification()
     {
-        $filter = array('_id' => 4);
-        $replacement = array('x' => 44);
-        $options = array(
-            'projection' => array('x' => 1, '_id' => 0),
-            'sort' => array('x' => 1),
+        $filter = ['_id' => 4];
+        $replacement = ['x' => 44];
+        $options = [
+            'projection' => ['x' => 1, '_id' => 0],
+            'sort' => ['x' => 1],
             'returnDocument' => FindOneAndReplace::RETURN_DOCUMENT_AFTER,
-        );
+        ];
 
         $document = $this->collection->findOneAndReplace($filter, $replacement, $options);
         $this->assertNull($document);
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testFindOneAndReplaceWithUpsertWhenNoDocumentsMatchReturningDocumentAfterModification()
     {
-        $filter = array('_id' => 4);
+        $filter = ['_id' => 4];
         // Server 2.4 and earlier requires any custom ID to also be in the replacement document
-        $replacement = array('_id' => 4, 'x' => 44);
-        $options = array(
-            'projection' => array('x' => 1, '_id' => 0),
-            'sort' => array('x' => 1),
+        $replacement = ['_id' => 4, 'x' => 44];
+        $options = [
+            'projection' => ['x' => 1, '_id' => 0],
+            'sort' => ['x' => 1],
             'returnDocument' => FindOneAndReplace::RETURN_DOCUMENT_AFTER,
             'upsert' => true,
-        );
+        ];
 
         $document = $this->collection->findOneAndReplace($filter, $replacement, $options);
-        $this->assertSameDocument(array('x' => 44), $document);
-
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-            array('_id' => 4, 'x' => 44),
-        );
+        $this->assertSameDocument(['x' => 44], $document);
+
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+            ['_id' => 4, 'x' => 44],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }

tests/Collection/CrudSpec/FindOneAndUpdateFunctionalTest.php

@@ -21,176 +21,176 @@ class FindOneAndUpdateFunctionalTest extends FunctionalTestCase
 
     public function testFindOneAndUpdateWhenManyDocumentsMatchReturningDocumentBeforeModification()
     {
-        $filter = array('_id' => array('$gt' => 1));
-        $update = array('$inc' => array('x' => 1));
-        $options = array(
-            'projection' => array('x' => 1, '_id' => 0),
-            'sort' => array('x' => 1),
-        );
+        $filter = ['_id' => ['$gt' => 1]];
+        $update = ['$inc' => ['x' => 1]];
+        $options = [
+            'projection' => ['x' => 1, '_id' => 0],
+            'sort' => ['x' => 1],
+        ];
 
         $document = $this->collection->findOneAndUpdate($filter, $update, $options);
-        $this->assertSameDocument(array('x' => 22), $document);
+        $this->assertSameDocument(['x' => 22], $document);
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 23),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 23],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testFindOneAndUpdateWhenManyDocumentsMatchReturningDocumentAfterModification()
     {
-        $filter = array('_id' => array('$gt' => 1));
-        $update = array('$inc' => array('x' => 1));
-        $options = array(
-            'projection' => array('x' => 1, '_id' => 0),
-            'sort' => array('x' => 1),
+        $filter = ['_id' => ['$gt' => 1]];
+        $update = ['$inc' => ['x' => 1]];
+        $options = [
+            'projection' => ['x' => 1, '_id' => 0],
+            'sort' => ['x' => 1],
             'returnDocument' => FindOneAndUpdate::RETURN_DOCUMENT_AFTER,
-        );
+        ];
 
         $document = $this->collection->findOneAndUpdate($filter, $update, $options);
-        $this->assertSameDocument(array('x' => 23), $document);
+        $this->assertSameDocument(['x' => 23], $document);
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 23),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 23],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testFindOneAndUpdateWhenOneDocumentMatchesReturningDocumentBeforeModification()
     {
-        $filter = array('_id' => 2);
-        $update = array('$inc' => array('x' => 1));
-        $options = array(
-            'projection' => array('x' => 1, '_id' => 0),
-            'sort' => array('x' => 1),
-        );
+        $filter = ['_id' => 2];
+        $update = ['$inc' => ['x' => 1]];
+        $options = [
+            'projection' => ['x' => 1, '_id' => 0],
+            'sort' => ['x' => 1],
+        ];
 
         $document = $this->collection->findOneAndUpdate($filter, $update, $options);
-        $this->assertSameDocument(array('x' => 22), $document);
+        $this->assertSameDocument(['x' => 22], $document);
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 23),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 23],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testFindOneAndUpdateWhenOneDocumentMatchesReturningDocumentAfterModification()
     {
-        $filter = array('_id' => 2);
-        $update = array('$inc' => array('x' => 1));
-        $options = array(
-            'projection' => array('x' => 1, '_id' => 0),
-            'sort' => array('x' => 1),
+        $filter = ['_id' => 2];
+        $update = ['$inc' => ['x' => 1]];
+        $options = [
+            'projection' => ['x' => 1, '_id' => 0],
+            'sort' => ['x' => 1],
             'returnDocument' => FindOneAndUpdate::RETURN_DOCUMENT_AFTER,
-        );
+        ];
 
         $document = $this->collection->findOneAndUpdate($filter, $update, $options);
-        $this->assertSameDocument(array('x' => 23), $document);
+        $this->assertSameDocument(['x' => 23], $document);
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 23),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 23],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testFindOneAndUpdateWhenNoDocumentsMatchReturningDocumentBeforeModification()
     {
-        $filter = array('_id' => 4);
-        $update = array('$inc' => array('x' => 1));
-        $options = array(
-            'projection' => array('x' => 1, '_id' => 0),
-            'sort' => array('x' => 1),
-        );
+        $filter = ['_id' => 4];
+        $update = ['$inc' => ['x' => 1]];
+        $options = [
+            'projection' => ['x' => 1, '_id' => 0],
+            'sort' => ['x' => 1],
+        ];
 
         $document = $this->collection->findOneAndUpdate($filter, $update, $options);
         $this->assertNull($document);
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testFindOneAndUpdateWithUpsertWhenNoDocumentsMatchReturningDocumentBeforeModification()
     {
-        $filter = array('_id' => 4);
-        $update = array('$inc' => array('x' => 1));
-        $options = array(
-            'projection' => array('x' => 1, '_id' => 0),
-            'sort' => array('x' => 1),
+        $filter = ['_id' => 4];
+        $update = ['$inc' => ['x' => 1]];
+        $options = [
+            'projection' => ['x' => 1, '_id' => 0],
+            'sort' => ['x' => 1],
             'upsert' => true,
-        );
+        ];
 
         $document = $this->collection->findOneAndUpdate($filter, $update, $options);
         $this->assertNull($document);
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-            array('_id' => 4, 'x' => 1),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+            ['_id' => 4, 'x' => 1],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testFindOneAndUpdateWhenNoDocumentsMatchReturningDocumentAfterModification()
     {
-        $filter = array('_id' => 4);
-        $update = array('$inc' => array('x' => 1));
-        $options = array(
-            'projection' => array('x' => 1, '_id' => 0),
-            'sort' => array('x' => 1),
+        $filter = ['_id' => 4];
+        $update = ['$inc' => ['x' => 1]];
+        $options = [
+            'projection' => ['x' => 1, '_id' => 0],
+            'sort' => ['x' => 1],
             'returnDocument' => FindOneAndUpdate::RETURN_DOCUMENT_AFTER,
-        );
+        ];
 
         $document = $this->collection->findOneAndUpdate($filter, $update, $options);
         $this->assertNull($document);
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testFindOneAndUpdateWithUpsertWhenNoDocumentsMatchReturningDocumentAfterModification()
     {
-        $filter = array('_id' => 4);
-        $update = array('$inc' => array('x' => 1));
-        $options = array(
-            'projection' => array('x' => 1, '_id' => 0),
-            'sort' => array('x' => 1),
+        $filter = ['_id' => 4];
+        $update = ['$inc' => ['x' => 1]];
+        $options = [
+            'projection' => ['x' => 1, '_id' => 0],
+            'sort' => ['x' => 1],
             'returnDocument' => FindOneAndUpdate::RETURN_DOCUMENT_AFTER,
             'upsert' => true,
-        );
+        ];
 
         $document = $this->collection->findOneAndUpdate($filter, $update, $options);
-        $this->assertSameDocument(array('x' => 1), $document);
-
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-            array('_id' => 4, 'x' => 1),
-        );
+        $this->assertSameDocument(['x' => 1], $document);
+
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+            ['_id' => 4, 'x' => 1],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }

tests/Collection/CrudSpec/FunctionalTestCase.php

@@ -20,10 +20,10 @@ abstract class FunctionalTestCase extends BaseFunctionalTestCase
         $bulkWrite = new BulkWrite(['ordered' => true]);
 
         for ($i = 1; $i <= $n; $i++) {
-            $bulkWrite->insert(array(
+            $bulkWrite->insert([
                 '_id' => $i,
                 'x' => (integer) ($i . $i),
-            ));
+            ]);
         }
 
         $result = $this->manager->executeBulkWrite($this->getNamespace(), $bulkWrite);

tests/Collection/CrudSpec/InsertManyFunctionalTest.php

@@ -18,20 +18,20 @@ class InsertManyFunctionalTest extends FunctionalTestCase
 
     public function testInsertManyWithNonexistentDocuments()
     {
-        $documents = array(
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-        );
+        $documents = [
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $result = $this->collection->insertMany($documents);
         $this->assertSame(2, $result->getInsertedCount());
-        $this->assertSame(array(2, 3), $result->getInsertedIds());
+        $this->assertSame([2, 3], $result->getInsertedIds());
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }

tests/Collection/CrudSpec/InsertOneFunctionalTest.php

@@ -18,16 +18,16 @@ class InsertOneFunctionalTest extends FunctionalTestCase
 
     public function testInsertOneWithANonexistentDocument()
     {
-        $document = array('_id' => 2, 'x' => 22);
+        $document = ['_id' => 2, 'x' => 22];
 
         $result = $this->collection->insertOne($document);
         $this->assertSame(1, $result->getInsertedCount());
         $this->assertSame(2, $result->getInsertedId());
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 22),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 22],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }

tests/Collection/CrudSpec/ReplaceOneFunctionalTest.php

@@ -22,97 +22,97 @@ class ReplaceOneFunctionalTest extends FunctionalTestCase
 
     public function testReplaceOneWhenManyDocumentsMatch()
     {
-        $filter = array('_id' => array('$gt' => 1));
-        $replacement = array('x' => 111);
+        $filter = ['_id' => ['$gt' => 1]];
+        $replacement = ['x' => 111];
 
         $result = $this->collection->replaceOne($filter, $replacement);
         $this->assertSame(1, $result->getMatchedCount());
         $this->omitModifiedCount or $this->assertSame(1, $result->getModifiedCount());
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 111),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 111],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testReplaceOneWhenOneDocumentMatches()
     {
-        $filter = array('_id' => 1);
-        $replacement = array('x' => 111);
+        $filter = ['_id' => 1];
+        $replacement = ['x' => 111];
 
         $result = $this->collection->replaceOne($filter, $replacement);
         $this->assertSame(1, $result->getMatchedCount());
         $this->omitModifiedCount or $this->assertSame(1, $result->getModifiedCount());
 
-        $expected = array(
-            array('_id' => 1, 'x' => 111),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 111],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testReplaceOneWhenNoDocumentsMatch()
     {
-        $filter = array('_id' => 4);
-        $replacement = array('x' => 111);
+        $filter = ['_id' => 4];
+        $replacement = ['x' => 111];
 
         $result = $this->collection->replaceOne($filter, $replacement);
         $this->assertSame(0, $result->getMatchedCount());
         $this->omitModifiedCount or $this->assertSame(0, $result->getModifiedCount());
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testReplaceOneWithUpsertWhenNoDocumentsMatchWithAnIdSpecified()
     {
-        $filter = array('_id' => 4);
-        $replacement = array('_id' => 4, 'x' => 1);
-        $options = array('upsert' => true);
+        $filter = ['_id' => 4];
+        $replacement = ['_id' => 4, 'x' => 1];
+        $options = ['upsert' => true];
 
         $result = $this->collection->replaceOne($filter, $replacement, $options);
         $this->assertSame(0, $result->getMatchedCount());
         $this->omitModifiedCount or $this->assertSame(0, $result->getModifiedCount());
         $this->assertSame(4, $result->getUpsertedId());
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-            array('_id' => 4, 'x' => 1),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+            ['_id' => 4, 'x' => 1],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testReplaceOneWithUpsertWhenNoDocumentsMatchWithoutAnIdSpecified()
     {
-        $filter = array('_id' => 4);
+        $filter = ['_id' => 4];
         // Server 2.4 and earlier requires any custom ID to also be in the replacement document
-        $replacement = array('_id' => 4, 'x' => 1);
-        $options = array('upsert' => true);
+        $replacement = ['_id' => 4, 'x' => 1];
+        $options = ['upsert' => true];
 
         $result = $this->collection->replaceOne($filter, $replacement, $options);
         $this->assertSame(0, $result->getMatchedCount());
         $this->omitModifiedCount or $this->assertSame(0, $result->getModifiedCount());
         $this->assertSame(4, $result->getUpsertedId());
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-            array('_id' => 4, 'x' => 1),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+            ['_id' => 4, 'x' => 1],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }

tests/Collection/CrudSpec/UpdateManyFunctionalTest.php

@@ -22,75 +22,75 @@ class UpdateManyFunctionalTest extends FunctionalTestCase
 
     public function testUpdateManyWhenManyDocumentsMatch()
     {
-        $filter = array('_id' => array('$gt' => 1));
-        $update = array('$inc' => array('x' => 1));
+        $filter = ['_id' => ['$gt' => 1]];
+        $update = ['$inc' => ['x' => 1]];
 
         $result = $this->collection->updateMany($filter, $update);
         $this->assertSame(2, $result->getMatchedCount());
         $this->omitModifiedCount or $this->assertSame(2, $result->getModifiedCount());
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 23),
-            array('_id' => 3, 'x' => 34),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 23],
+            ['_id' => 3, 'x' => 34],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testUpdateManyWhenOneDocumentMatches()
     {
-        $filter = array('_id' => 1);
-        $update = array('$inc' => array('x' => 1));
+        $filter = ['_id' => 1];
+        $update = ['$inc' => ['x' => 1]];
 
         $result = $this->collection->updateMany($filter, $update);
         $this->assertSame(1, $result->getMatchedCount());
         $this->omitModifiedCount or $this->assertSame(1, $result->getModifiedCount());
 
-        $expected = array(
-            array('_id' => 1, 'x' => 12),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 12],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testUpdateManyWhenNoDocumentsMatch()
     {
-        $filter = array('_id' => 4);
-        $update = array('$inc' => array('x' => 1));
+        $filter = ['_id' => 4];
+        $update = ['$inc' => ['x' => 1]];
 
         $result = $this->collection->updateMany($filter, $update);
         $this->assertSame(0, $result->getMatchedCount());
         $this->omitModifiedCount or $this->assertSame(0, $result->getModifiedCount());
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testUpdateManyWithUpsertWhenNoDocumentsMatch()
     {
-        $filter = array('_id' => 4);
-        $update = array('$inc' => array('x' => 1));
-        $options = array('upsert' => true);
+        $filter = ['_id' => 4];
+        $update = ['$inc' => ['x' => 1]];
+        $options = ['upsert' => true];
 
         $result = $this->collection->updateMany($filter, $update, $options);
         $this->assertSame(0, $result->getMatchedCount());
         $this->omitModifiedCount or $this->assertSame(0, $result->getModifiedCount());
         $this->assertSame(4, $result->getUpsertedId());
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-            array('_id' => 4, 'x' => 1),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+            ['_id' => 4, 'x' => 1],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }

tests/Collection/CrudSpec/UpdateOneFunctionalTest.php

@@ -22,75 +22,75 @@ class UpdateOneFunctionalTest extends FunctionalTestCase
 
     public function testUpdateOneWhenManyDocumentsMatch()
     {
-        $filter = array('_id' => array('$gt' => 1));
-        $update = array('$inc' => array('x' => 1));
+        $filter = ['_id' => ['$gt' => 1]];
+        $update = ['$inc' => ['x' => 1]];
 
         $result = $this->collection->updateOne($filter, $update);
         $this->assertSame(1, $result->getMatchedCount());
         $this->omitModifiedCount or $this->assertSame(1, $result->getModifiedCount());
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 23),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 23],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testUpdateOneWhenOneDocumentMatches()
     {
-        $filter = array('_id' => 1);
-        $update = array('$inc' => array('x' => 1));
+        $filter = ['_id' => 1];
+        $update = ['$inc' => ['x' => 1]];
 
         $result = $this->collection->updateOne($filter, $update);
         $this->assertSame(1, $result->getMatchedCount());
         $this->omitModifiedCount or $this->assertSame(1, $result->getModifiedCount());
 
-        $expected = array(
-            array('_id' => 1, 'x' => 12),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 12],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testUpdateOneWhenNoDocumentsMatch()
     {
-        $filter = array('_id' => 4);
-        $update = array('$inc' => array('x' => 1));
+        $filter = ['_id' => 4];
+        $update = ['$inc' => ['x' => 1]];
 
         $result = $this->collection->updateOne($filter, $update);
         $this->assertSame(0, $result->getMatchedCount());
         $this->omitModifiedCount or $this->assertSame(0, $result->getModifiedCount());
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }
 
     public function testUpdateOneWithUpsertWhenNoDocumentsMatch()
     {
-        $filter = array('_id' => 4);
-        $update = array('$inc' => array('x' => 1));
-        $options = array('upsert' => true);
+        $filter = ['_id' => 4];
+        $update = ['$inc' => ['x' => 1]];
+        $options = ['upsert' => true];
 
         $result = $this->collection->updateOne($filter, $update, $options);
         $this->assertSame(0, $result->getMatchedCount());
         $this->omitModifiedCount or $this->assertSame(0, $result->getModifiedCount());
         $this->assertSame(4, $result->getUpsertedId());
 
-        $expected = array(
-            array('_id' => 1, 'x' => 11),
-            array('_id' => 2, 'x' => 22),
-            array('_id' => 3, 'x' => 33),
-            array('_id' => 4, 'x' => 1),
-        );
+        $expected = [
+            ['_id' => 1, 'x' => 11],
+            ['_id' => 2, 'x' => 22],
+            ['_id' => 3, 'x' => 33],
+            ['_id' => 4, 'x' => 1],
+        ];
 
         $this->assertSameDocuments($expected, $this->collection->find());
     }

tests/Collection/IndexManagementFunctionalTest.php

@@ -16,28 +16,28 @@ class IndexManagementFunctionalTest extends FunctionalTestCase
     {
         $that = $this;
 
-        $this->assertSame('x_1', $this->collection->createIndex(array('x' => 1), array('sparse' => true, 'unique' => true)));
+        $this->assertSame('x_1', $this->collection->createIndex(['x' => 1], ['sparse' => true, 'unique' => true]));
         $this->assertIndexExists('x_1', function(IndexInfo $info) use ($that) {
             $that->assertTrue($info->isSparse());
             $that->assertTrue($info->isUnique());
             $that->assertFalse($info->isTtl());
         });
 
-        $this->assertSame('y_-1_z_1', $this->collection->createIndex(array('y' => -1, 'z' => 1)));
+        $this->assertSame('y_-1_z_1', $this->collection->createIndex(['y' => -1, 'z' => 1]));
         $this->assertIndexExists('y_-1_z_1', function(IndexInfo $info) use ($that) {
             $that->assertFalse($info->isSparse());
             $that->assertFalse($info->isUnique());
             $that->assertFalse($info->isTtl());
         });
 
-        $this->assertSame('g_2dsphere_z_1', $this->collection->createIndex(array('g' => '2dsphere', 'z' => 1)));
+        $this->assertSame('g_2dsphere_z_1', $this->collection->createIndex(['g' => '2dsphere', 'z' => 1]));
         $this->assertIndexExists('g_2dsphere_z_1', function(IndexInfo $info) use ($that) {
             $that->assertFalse($info->isSparse());
             $that->assertFalse($info->isUnique());
             $that->assertFalse($info->isTtl());
         });
 
-        $this->assertSame('my_ttl', $this->collection->createIndex(array('t' => 1), array('expireAfterSeconds' => 0, 'name' => 'my_ttl')));
+        $this->assertSame('my_ttl', $this->collection->createIndex(['t' => 1], ['expireAfterSeconds' => 0, 'name' => 'my_ttl']));
         $this->assertIndexExists('my_ttl', function(IndexInfo $info) use ($that) {
             $that->assertFalse($info->isSparse());
             $that->assertFalse($info->isUnique());
@@ -49,14 +49,14 @@ class IndexManagementFunctionalTest extends FunctionalTestCase
     {
         $that = $this;
 
-        $expectedNames = array('x_1', 'y_-1_z_1', 'g_2dsphere_z_1', 'my_ttl');
+        $expectedNames = ['x_1', 'y_-1_z_1', 'g_2dsphere_z_1', 'my_ttl'];
 
-        $indexes = array(
-            array('key' => array('x' => 1), 'sparse' => true, 'unique' => true),
-            array('key' => array('y' => -1, 'z' => 1)),
-            array('key' => array('g' => '2dsphere', 'z' => 1)),
-            array('key' => array('t' => 1), 'expireAfterSeconds' => 0, 'name' => 'my_ttl'),
-        );
+        $indexes = [
+            ['key' => ['x' => 1], 'sparse' => true, 'unique' => true],
+            ['key' => ['y' => -1, 'z' => 1]],
+            ['key' => ['g' => '2dsphere', 'z' => 1]],
+            ['key' => ['t' => 1], 'expireAfterSeconds' => 0, 'name' => 'my_ttl'],
+        ];
 
         $this->assertSame($expectedNames, $this->collection->createIndexes($indexes));
 
@@ -90,12 +90,12 @@ class IndexManagementFunctionalTest extends FunctionalTestCase
      */
     public function testCreateIndexesRequiresAtLeastOneIndex()
     {
-        $this->assertSame(array(), $this->collection->createIndexes(array()));
+        $this->assertSame([], $this->collection->createIndexes([]));
     }
 
     public function testDropIndex()
     {
-        $this->assertSame('x_1', $this->collection->createIndex(array('x' => 1)));
+        $this->assertSame('x_1', $this->collection->createIndex(['x' => 1]));
         $this->assertIndexExists('x_1');
         $this->assertCommandSucceeded($this->collection->dropIndex('x_1'));
 
@@ -111,7 +111,7 @@ class IndexManagementFunctionalTest extends FunctionalTestCase
      */
     public function testDropIndexShouldNotAllowEmptyIndexName()
     {
-        $this->assertSame('x_1', $this->collection->createIndex(array('x' => 1)));
+        $this->assertSame('x_1', $this->collection->createIndex(['x' => 1]));
         $this->assertIndexExists('x_1');
         $this->collection->dropIndex('');
     }
@@ -121,15 +121,15 @@ class IndexManagementFunctionalTest extends FunctionalTestCase
      */
     public function testDropIndexShouldNotAllowWildcardCharacter()
     {
-        $this->assertSame('x_1', $this->collection->createIndex(array('x' => 1)));
+        $this->assertSame('x_1', $this->collection->createIndex(['x' => 1]));
         $this->assertIndexExists('x_1');
         $this->collection->dropIndex('*');
     }
 
     public function testDropIndexes()
     {
-        $this->assertSame('x_1', $this->collection->createIndex(array('x' => 1)));
-        $this->assertSame('y_1', $this->collection->createIndex(array('y' => 1)));
+        $this->assertSame('x_1', $this->collection->createIndex(['x' => 1]));
+        $this->assertSame('y_1', $this->collection->createIndex(['y' => 1]));
         $this->assertIndexExists('x_1');
         $this->assertIndexExists('y_1');
         $this->assertCommandSucceeded($this->collection->dropIndexes());
@@ -147,7 +147,7 @@ class IndexManagementFunctionalTest extends FunctionalTestCase
 
     public function testListIndexes()
     {
-        $this->assertSame('x_1', $this->collection->createIndex(array('x' => 1)));
+        $this->assertSame('x_1', $this->collection->createIndex(['x' => 1]));
 
         $indexes = $this->collection->listIndexes();
         $this->assertInstanceOf('MongoDB\Model\IndexInfoIterator', $indexes);

tests/Database/CollectionManagementFunctionalTest.php

@@ -23,11 +23,11 @@ class CollectionManagementFunctionalTest extends FunctionalTestCase
         });
 
         $cappedCollectionName = $this->getCollectionName() . '.capped';
-        $cappedCollectionOptions = array(
+        $cappedCollectionOptions = [
             'capped' => true,
             'max' => 100,
             'size' => 1048576,
-        );
+        ];
 
         $commandResult = $this->database->createCollection($cappedCollectionName, $cappedCollectionOptions);
         $this->assertCommandSucceeded($commandResult);
@@ -70,7 +70,7 @@ class CollectionManagementFunctionalTest extends FunctionalTestCase
         $this->assertCommandSucceeded($commandResult);
 
         $collectionName = $this->getCollectionName();
-        $options = array('filter' => array('name' => $collectionName));
+        $options = ['filter' => ['name' => $collectionName]];
 
         $collections = $this->database->listCollections($options);
         $this->assertInstanceOf('MongoDB\Model\CollectionInfoIterator', $collections);

tests/Database/DatabaseFunctionalTest.php

@@ -22,10 +22,10 @@ class DatabaseFunctionalTest extends FunctionalTestCase
 
     public function provideInvalidDatabaseValues()
     {
-        return array(
-            array(null),
-            array(''),
-        );
+        return [
+            [null],
+            [''],
+        ];
     }
 
     public function testToString()

tests/FunctionalTestCase.php

@@ -22,8 +22,8 @@ abstract class FunctionalTestCase extends TestCase
     {
         list($databaseName, $collectionName) = explode('.', $namespace, 2);
 
-        $cursor = $this->manager->executeCommand($databaseName, new Command(array('count' => $collectionName)));
-        $cursor->setTypeMap(array('root' => 'array', 'document' => 'array'));
+        $cursor = $this->manager->executeCommand($databaseName, new Command(['count' => $collectionName]));
+        $cursor->setTypeMap(['root' => 'array', 'document' => 'array']);
         $document = current($cursor->toArray());
 
         $this->assertArrayHasKey('n', $document);
@@ -77,11 +77,11 @@ abstract class FunctionalTestCase extends TestCase
     {
         $cursor = $this->manager->executeCommand(
             $this->getDatabaseName(),
-            new Command(array('buildInfo' => 1)),
+            new Command(['buildInfo' => 1]),
             $readPreference ?: new ReadPreference(ReadPreference::RP_PRIMARY)
         );
 
-        $cursor->setTypeMap(array('root' => 'array', 'document' => 'array'));
+        $cursor->setTypeMap(['root' => 'array', 'document' => 'array']);
         $document = current($cursor->toArray());
 
         return $document['version'];

tests/Model/CollectionInfoTest.php

@@ -9,32 +9,32 @@ class CollectionInfoTest extends TestCase
 {
     public function testGetName()
     {
-        $info = new CollectionInfo(array('name' => 'foo'));
+        $info = new CollectionInfo(['name' => 'foo']);
         $this->assertSame('foo', $info->getName());
     }
 
     public function testGetOptions()
     {
-        $info = new CollectionInfo(array('name' => 'foo'));
-        $this->assertSame(array(), $info->getOptions());
+        $info = new CollectionInfo(['name' => 'foo']);
+        $this->assertSame([], $info->getOptions());
 
-        $info = new CollectionInfo(array('name' => 'foo', 'options' => array('capped' => true, 'size' => 1048576)));
-        $this->assertSame(array('capped' => true, 'size' => 1048576), $info->getOptions());
+        $info = new CollectionInfo(['name' => 'foo', 'options' => ['capped' => true, 'size' => 1048576]]);
+        $this->assertSame(['capped' => true, 'size' => 1048576], $info->getOptions());
     }
 
     public function testCappedCollectionMethods()
     {
-        $info = new CollectionInfo(array('name' => 'foo'));
+        $info = new CollectionInfo(['name' => 'foo']);
         $this->assertFalse($info->isCapped());
         $this->assertNull($info->getCappedMax());
         $this->assertNull($info->getCappedSize());
 
-        $info = new CollectionInfo(array('name' => 'foo', 'options' => array('capped' => true, 'size' => 1048576)));
+        $info = new CollectionInfo(['name' => 'foo', 'options' => ['capped' => true, 'size' => 1048576]]);
         $this->assertTrue($info->isCapped());
         $this->assertNull($info->getCappedMax());
         $this->assertSame(1048576, $info->getCappedSize());
 
-        $info = new CollectionInfo(array('name' => 'foo', 'options' => array('capped' => true, 'size' => 1048576, 'max' => 100)));
+        $info = new CollectionInfo(['name' => 'foo', 'options' => ['capped' => true, 'size' => 1048576, 'max' => 100]]);
         $this->assertTrue($info->isCapped());
         $this->assertSame(100, $info->getCappedMax());
         $this->assertSame(1048576, $info->getCappedSize());
@@ -42,10 +42,10 @@ class CollectionInfoTest extends TestCase
 
     public function testDebugInfo()
     {
-        $expectedInfo = array(
+        $expectedInfo = [
             'name' => 'foo',
-            'options' => array('capped' => true, 'size' => 1048576),
-        );
+            'options' => ['capped' => true, 'size' => 1048576],
+        ];
 
         $info = new CollectionInfo($expectedInfo);
         $this->assertSame($expectedInfo, $info->__debugInfo());

tests/Model/DatabaseInfoTest.php

@@ -9,32 +9,32 @@ class DatabaseInfoTest extends TestCase
 {
     public function testGetName()
     {
-        $info = new DatabaseInfo(array('name' => 'foo'));
+        $info = new DatabaseInfo(['name' => 'foo']);
         $this->assertSame('foo', $info->getName());
     }
 
     public function testGetSizeOnDisk()
     {
-        $info = new DatabaseInfo(array('sizeOnDisk' => 1048576));
+        $info = new DatabaseInfo(['sizeOnDisk' => 1048576]);
         $this->assertSame(1048576, $info->getSizeOnDisk());
     }
 
     public function testIsEmpty()
     {
-        $info = new DatabaseInfo(array('empty' => false));
+        $info = new DatabaseInfo(['empty' => false]);
         $this->assertFalse($info->isEmpty());
 
-        $info = new DatabaseInfo(array('empty' => true));
+        $info = new DatabaseInfo(['empty' => true]);
         $this->assertTrue($info->isEmpty());
     }
 
     public function testDebugInfo()
     {
-        $expectedInfo = array(
+        $expectedInfo = [
             'name' => 'foo',
             'sizeOnDisk' => 1048576,
             'empty' => false,
-        );
+        ];
 
         $info = new DatabaseInfo($expectedInfo);
         $this->assertSame($expectedInfo, $info->__debugInfo());

tests/Model/IndexInfoTest.php

@@ -9,15 +9,15 @@ class IndexInfoTest extends TestCase
 {
     public function testBasicIndex()
     {
-        $info = new IndexInfo(array(
+        $info = new IndexInfo([
             'v' => 1,
-            'key' => array('x' => 1),
+            'key' => ['x' => 1],
             'name' => 'x_1',
             'ns' => 'foo.bar',
-        ));
+        ]);
 
         $this->assertSame(1, $info->getVersion());
-        $this->assertSame(array('x' => 1), $info->getKey());
+        $this->assertSame(['x' => 1], $info->getKey());
         $this->assertSame('x_1', $info->getName());
         $this->assertSame('foo.bar', $info->getNamespace());
         $this->assertFalse($info->isSparse());
@@ -27,16 +27,16 @@ class IndexInfoTest extends TestCase
 
     public function testSparseIndex()
     {
-        $info = new IndexInfo(array(
+        $info = new IndexInfo([
             'v' => 1,
-            'key' => array('y' => 1),
+            'key' => ['y' => 1],
             'name' => 'y_sparse',
             'ns' => 'foo.bar',
             'sparse' => true,
-        ));
+        ]);
 
         $this->assertSame(1, $info->getVersion());
-        $this->assertSame(array('y' => 1), $info->getKey());
+        $this->assertSame(['y' => 1], $info->getKey());
         $this->assertSame('y_sparse', $info->getName());
         $this->assertSame('foo.bar', $info->getNamespace());
         $this->assertTrue($info->isSparse());
@@ -46,16 +46,16 @@ class IndexInfoTest extends TestCase
 
     public function testUniqueIndex()
     {
-        $info = new IndexInfo(array(
+        $info = new IndexInfo([
             'v' => 1,
-            'key' => array('z' => 1),
+            'key' => ['z' => 1],
             'name' => 'z_unique',
             'ns' => 'foo.bar',
             'unique' => true,
-        ));
+        ]);
 
         $this->assertSame(1, $info->getVersion());
-        $this->assertSame(array('z' => 1), $info->getKey());
+        $this->assertSame(['z' => 1], $info->getKey());
         $this->assertSame('z_unique', $info->getName());
         $this->assertSame('foo.bar', $info->getNamespace());
         $this->assertFalse($info->isSparse());
@@ -65,16 +65,16 @@ class IndexInfoTest extends TestCase
 
     public function testTtlIndex()
     {
-        $info = new IndexInfo(array(
+        $info = new IndexInfo([
             'v' => 1,
-            'key' => array('z' => 1),
+            'key' => ['z' => 1],
             'name' => 'z_unique',
             'ns' => 'foo.bar',
             'expireAfterSeconds' => 100,
-        ));
+        ]);
 
         $this->assertSame(1, $info->getVersion());
-        $this->assertSame(array('z' => 1), $info->getKey());
+        $this->assertSame(['z' => 1], $info->getKey());
         $this->assertSame('z_unique', $info->getName());
         $this->assertSame('foo.bar', $info->getNamespace());
         $this->assertFalse($info->isSparse());
@@ -86,12 +86,12 @@ class IndexInfoTest extends TestCase
 
     public function testDebugInfo()
     {
-        $expectedInfo = array(
+        $expectedInfo = [
             'v' => 1,
-            'key' => array('x' => 1),
+            'key' => ['x' => 1],
             'name' => 'x_1',
             'ns' => 'foo.bar',
-        );
+        ];
 
         $info = new IndexInfo($expectedInfo);
         $this->assertSame($expectedInfo, $info->__debugInfo());

tests/Model/IndexInputTest.php

@@ -12,7 +12,7 @@ class IndexInputTest extends TestCase
      */
     public function testConstructorShouldRequireKey()
     {
-        new IndexInput(array());
+        new IndexInput([]);
     }
 
     /**
@@ -20,7 +20,7 @@ class IndexInputTest extends TestCase
      */
     public function testConstructorShouldRequireKeyToBeArrayOrObject()
     {
-        new IndexInput(array('key' => 'foo'));
+        new IndexInput(['key' => 'foo']);
     }
 
     /**
@@ -28,7 +28,7 @@ class IndexInputTest extends TestCase
      */
     public function testConstructorShouldRequireKeyOrderToBeScalar()
     {
-        new IndexInput(array('key' => array('x' => array())));
+        new IndexInput(['key' => ['x' => []]]);
     }
 
     /**
@@ -36,7 +36,7 @@ class IndexInputTest extends TestCase
      */
     public function testConstructorShouldRequireNamespace()
     {
-        new IndexInput(array('key' => array('x' => 1)));
+        new IndexInput(['key' => ['x' => 1]]);
     }
 
     /**
@@ -44,7 +44,7 @@ class IndexInputTest extends TestCase
      */
     public function testConstructorShouldRequireNamespaceToBeString()
     {
-        new IndexInput(array('key' => array('x' => 1), 'ns' => 1));
+        new IndexInput(['key' => ['x' => 1], 'ns' => 1]);
     }
 
     /**
@@ -52,7 +52,7 @@ class IndexInputTest extends TestCase
      */
     public function testConstructorShouldRequireNameToBeString()
     {
-        new IndexInput(array('key' => array('x' => 1), 'ns' => 'foo.bar', 'name' => 1));
+        new IndexInput(['key' => ['x' => 1], 'ns' => 'foo.bar', 'name' => 1]);
     }
 
     /**
@@ -60,32 +60,32 @@ class IndexInputTest extends TestCase
      */
     public function testNameGeneration($expectedName, array $key)
     {
-        $this->assertSame($expectedName, (string) new IndexInput(array('key' => $key, 'ns' => 'foo.bar')));
+        $this->assertSame($expectedName, (string) new IndexInput(['key' => $key, 'ns' => 'foo.bar']));
     }
 
     public function provideExpectedNameAndKey()
     {
-        return array(
-            array('x_1', array('x' => 1)),
-            array('x_1_y_-1', array('x' => 1, 'y' => -1)),
-            array('loc_2dsphere', array('loc' => '2dsphere')),
-            array('loc_2dsphere_x_1', array('loc' => '2dsphere', 'x' => 1)),
-            array('doc_text', array('doc' => 'text')),
-        );
+        return [
+            ['x_1', ['x' => 1]],
+            ['x_1_y_-1', ['x' => 1, 'y' => -1]],
+            ['loc_2dsphere', ['loc' => '2dsphere']],
+            ['loc_2dsphere_x_1', ['loc' => '2dsphere', 'x' => 1]],
+            ['doc_text', ['doc' => 'text']],
+        ];
     }
 
     public function testBsonSerialization()
     {
-        $expected = array(
-            'key' => array('x' => 1),
+        $expected = [
+            'key' => ['x' => 1],
             'ns' => 'foo.bar',
             'name' => 'x_1',
-        );
+        ];
 
-        $indexInput = new IndexInput(array(
-            'key' => array('x' => 1),
+        $indexInput = new IndexInput([
+            'key' => ['x' => 1],
             'ns' => 'foo.bar',
-        ));
+        ]);
 
         $this->assertInstanceOf('MongoDB\BSON\Serializable', $indexInput);
         $this->assertEquals($expected, $indexInput->bsonSerialize());

tests/Operation/AggregateTest.php

@@ -12,7 +12,7 @@ class AggregateTest extends TestCase
      */
     public function testConstructorPipelineArgumentMustNotBeEmpty()
     {
-        new Aggregate($this->getDatabaseName(), $this->getCollectionName(), array());
+        new Aggregate($this->getDatabaseName(), $this->getCollectionName(), []);
     }
 
     /**
@@ -21,7 +21,7 @@ class AggregateTest extends TestCase
      */
     public function testConstructorPipelineArgumentMustBeAList()
     {
-        new Aggregate($this->getDatabaseName(), $this->getCollectionName(), array(1 => array('$match' => array('x' => 1))));
+        new Aggregate($this->getDatabaseName(), $this->getCollectionName(), [1 => ['$match' => ['x' => 1]]]);
     }
 
     /**
@@ -30,31 +30,31 @@ class AggregateTest extends TestCase
      */
     public function testConstructorOptionTypeChecks(array $options)
     {
-        new Aggregate($this->getDatabaseName(), $this->getCollectionName(), array(array('$match' => array('x' => 1))), $options);
+        new Aggregate($this->getDatabaseName(), $this->getCollectionName(), [['$match' => ['x' => 1]]], $options);
     }
 
     public function provideInvalidConstructorOptions()
     {
-        $options = array();
+        $options = [];
 
         foreach ($this->getInvalidBooleanValues() as $value) {
-            $options[][] = array('allowDiskUse' => $value);
+            $options[][] = ['allowDiskUse' => $value];
         }
 
         foreach ($this->getInvalidIntegerValues() as $value) {
-            $options[][] = array('batchSize' => $value);
+            $options[][] = ['batchSize' => $value];
         }
 
         foreach ($this->getInvalidIntegerValues() as $value) {
-            $options[][] = array('maxTimeMS' => $value);
+            $options[][] = ['maxTimeMS' => $value];
         }
 
         foreach ($this->getInvalidReadPreferenceValues() as $value) {
-            $options[][] = array('readPreference' => $value);
+            $options[][] = ['readPreference' => $value];
         }
 
         foreach ($this->getInvalidBooleanValues() as $value) {
-            $options[][] = array('useCursor' => $value);
+            $options[][] = ['useCursor' => $value];
         }
 
         return $options;
@@ -69,8 +69,8 @@ class AggregateTest extends TestCase
         new Aggregate(
             $this->getDatabaseName(),
             $this->getCollectionName(),
-            array(array('$match' => array('x' => 1))),
-            array('batchSize' => 100, 'useCursor' => false)
+            [['$match' => ['x' => 1]]],
+            ['batchSize' => 100, 'useCursor' => false]
         );
     }
 }

tests/Operation/CountTest.php

@@ -21,31 +21,31 @@ class CountTest extends TestCase
      */
     public function testConstructorOptionTypeChecks(array $options)
     {
-        new Count($this->getDatabaseName(), $this->getCollectionName(), array(), $options);
+        new Count($this->getDatabaseName(), $this->getCollectionName(), [], $options);
     }
 
     public function provideInvalidConstructorOptions()
     {
-        $options = array();
+        $options = [];
 
         foreach ($this->getInvalidHintValues() as $value) {
-            $options[][] = array('hint' => $value);
+            $options[][] = ['hint' => $value];
         }
 
         foreach ($this->getInvalidIntegerValues() as $value) {
-            $options[][] = array('limit' => $value);
+            $options[][] = ['limit' => $value];
         }
 
         foreach ($this->getInvalidIntegerValues() as $value) {
-            $options[][] = array('maxTimeMS' => $value);
+            $options[][] = ['maxTimeMS' => $value];
         }
 
         foreach ($this->getInvalidReadPreferenceValues() as $value) {
-            $options[][] = array('readPreference' => $value);
+            $options[][] = ['readPreference' => $value];
         }
 
         foreach ($this->getInvalidIntegerValues() as $value) {
-            $options[][] = array('skip' => $value);
+            $options[][] = ['skip' => $value];
         }
 
         return $options;
@@ -53,6 +53,6 @@ class CountTest extends TestCase
 
     private function getInvalidHintValues()
     {
-        return array(123, 3.14, true);
+        return [123, 3.14, true];
     }
 }

tests/Operation/DeleteTest.php

@@ -22,12 +22,12 @@ class DeleteTest extends TestCase
      */
     public function testConstructorLimitArgumentMustBeOneOrZero($limit)
     {
-        new Delete($this->getDatabaseName(), $this->getCollectionName(), array(), $limit);
+        new Delete($this->getDatabaseName(), $this->getCollectionName(), [], $limit);
     }
 
     public function provideInvalidLimitValues()
     {
-        return $this->wrapValuesForDataProvider(array_merge($this->getInvalidIntegerValues(), array(-1, 2)));
+        return $this->wrapValuesForDataProvider(array_merge($this->getInvalidIntegerValues(), [-1, 2]));
     }
 
     /**
@@ -36,15 +36,15 @@ class DeleteTest extends TestCase
      */
     public function testConstructorOptionTypeChecks(array $options)
     {
-        new Delete($this->getDatabaseName(), $this->getCollectionName(), array(), 1, $options);
+        new Delete($this->getDatabaseName(), $this->getCollectionName(), [], 1, $options);
     }
 
     public function provideInvalidConstructorOptions()
     {
-        $options = array();
+        $options = [];
 
         foreach ($this->getInvalidWriteConcernValues() as $value) {
-            $options[][] = array('writeConcern' => $value);
+            $options[][] = ['writeConcern' => $value];
         }
 
         return $options;

tests/Operation/DistinctTest.php

@@ -21,19 +21,19 @@ class DistinctTest extends TestCase
      */
     public function testConstructorOptionTypeChecks(array $options)
     {
-        new Distinct($this->getDatabaseName(), $this->getCollectionName(), 'x', array(), $options);
+        new Distinct($this->getDatabaseName(), $this->getCollectionName(), 'x', [], $options);
     }
 
     public function provideInvalidConstructorOptions()
     {
-        $options = array();
+        $options = [];
 
         foreach ($this->getInvalidIntegerValues() as $value) {
-            $options[][] = array('maxTimeMS' => $value);
+            $options[][] = ['maxTimeMS' => $value];
         }
 
         foreach ($this->getInvalidReadPreferenceValues() as $value) {
-            $options[][] = array('readPreference' => $value);
+            $options[][] = ['readPreference' => $value];
         }
 
         return $options;

tests/Operation/FindTest.php

@@ -21,59 +21,59 @@ class FindTest extends TestCase
      */
     public function testConstructorOptionTypeChecks(array $options)
     {
-        new Find($this->getDatabaseName(), $this->getCollectionName(), array(), $options);
+        new Find($this->getDatabaseName(), $this->getCollectionName(), [], $options);
     }
 
     public function provideInvalidConstructorOptions()
     {
-        $options = array();
+        $options = [];
 
         foreach ($this->getInvalidBooleanValues() as $value) {
-            $options[][] = array('allowPartialResults' => $value);
+            $options[][] = ['allowPartialResults' => $value];
         }
 
         foreach ($this->getInvalidIntegerValues() as $value) {
-            $options[][] = array('batchSize' => $value);
+            $options[][] = ['batchSize' => $value];
         }
 
         foreach ($this->getInvalidStringValues() as $value) {
-            $options[][] = array('comment' => $value);
+            $options[][] = ['comment' => $value];
         }
 
         foreach ($this->getInvalidIntegerValues() as $value) {
-            $options[][] = array('cursorType' => $value);
+            $options[][] = ['cursorType' => $value];
         }
 
         foreach ($this->getInvalidIntegerValues() as $value) {
-            $options[][] = array('limit' => $value);
+            $options[][] = ['limit' => $value];
         }
 
         foreach ($this->getInvalidIntegerValues() as $value) {
-            $options[][] = array('maxTimeMS' => $value);
+            $options[][] = ['maxTimeMS' => $value];
         }
 
         foreach ($this->getInvalidDocumentValues() as $value) {
-            $options[][] = array('modifiers' => $value);
+            $options[][] = ['modifiers' => $value];
         }
 
         foreach ($this->getInvalidBooleanValues() as $value) {
-            $options[][] = array('oplogReplay' => $value);
+            $options[][] = ['oplogReplay' => $value];
         }
 
         foreach ($this->getInvalidDocumentValues() as $value) {
-            $options[][] = array('projection' => $value);
+            $options[][] = ['projection' => $value];
         }
 
         foreach ($this->getInvalidReadPreferenceValues() as $value) {
-            $options[][] = array('readPreference' => $value);
+            $options[][] = ['readPreference' => $value];
         }
 
         foreach ($this->getInvalidIntegerValues() as $value) {
-            $options[][] = array('skip' => $value);
+            $options[][] = ['skip' => $value];
         }
 
         foreach ($this->getInvalidDocumentValues() as $value) {
-            $options[][] = array('sort' => $value);
+            $options[][] = ['sort' => $value];
         }
 
         return $options;
@@ -85,11 +85,11 @@ class FindTest extends TestCase
      */
     public function testConstructorCursorTypeOption($cursorType)
     {
-        new Find($this->getDatabaseName(), $this->getCollectionName(), array(), array('cursorType' => $cursorType));
+        new Find($this->getDatabaseName(), $this->getCollectionName(), [], ['cursorType' => $cursorType]);
     }
 
     public function provideInvalidConstructorCursorTypeOptions()
     {
-        return $this->wrapValuesForDataProvider(array(-1, 0, 4));
+        return $this->wrapValuesForDataProvider([-1, 0, 4]);
     }
 }

tests/Operation/InsertManyTest.php

@@ -12,7 +12,7 @@ class InsertManyTest extends TestCase
      */
     public function testConstructorDocumentsMustNotBeEmpty()
     {
-        new InsertMany($this->getDatabaseName(), $this->getCollectionName(), array());
+        new InsertMany($this->getDatabaseName(), $this->getCollectionName(), []);
     }
 
     /**
@@ -21,7 +21,7 @@ class InsertManyTest extends TestCase
      */
     public function testConstructorDocumentsMustBeAList()
     {
-        new InsertMany($this->getDatabaseName(), $this->getCollectionName(), array(1 => array('x' => 1)));
+        new InsertMany($this->getDatabaseName(), $this->getCollectionName(), [1 => ['x' => 1]]);
     }
 
     /**
@@ -31,7 +31,7 @@ class InsertManyTest extends TestCase
      */
     public function testConstructorDocumentsArgumentElementTypeChecks($document)
     {
-        new InsertMany($this->getDatabaseName(), $this->getCollectionName(), array($document));
+        new InsertMany($this->getDatabaseName(), $this->getCollectionName(), [$document]);
     }
 
     /**
@@ -40,19 +40,19 @@ class InsertManyTest extends TestCase
      */
     public function testConstructorOptionTypeChecks(array $options)
     {
-        new InsertMany($this->getDatabaseName(), $this->getCollectionName(), array(array('x' => 1)), $options);
+        new InsertMany($this->getDatabaseName(), $this->getCollectionName(), [['x' => 1]], $options);
     }
 
     public function provideInvalidConstructorOptions()
     {
-        $options = array();
+        $options = [];
 
         foreach ($this->getInvalidBooleanValues() as $value) {
-            $options[][] = array('ordered' => $value);
+            $options[][] = ['ordered' => $value];
         }
 
         foreach ($this->getInvalidWriteConcernValues() as $value) {
-            $options[][] = array('writeConcern' => $value);
+            $options[][] = ['writeConcern' => $value];
         }
 
         return $options;

tests/Operation/InsertOneTest.php

@@ -21,15 +21,15 @@ class InsertOneTest extends TestCase
      */
     public function testConstructorOptionTypeChecks(array $options)
     {
-        new InsertOne($this->getDatabaseName(), $this->getCollectionName(), array('x' => 1), $options);
+        new InsertOne($this->getDatabaseName(), $this->getCollectionName(), ['x' => 1], $options);
     }
 
     public function provideInvalidConstructorOptions()
     {
-        $options = array();
+        $options = [];
 
         foreach ($this->getInvalidWriteConcernValues() as $value) {
-            $options[][] = array('writeConcern' => $value);
+            $options[][] = ['writeConcern' => $value];
         }
 
         return $options;

tests/Operation/ReplaceOneTest.php

@@ -12,7 +12,7 @@ class ReplaceOneTest extends TestCase
      */
     public function testConstructorFilterArgumentTypeCheck($filter)
     {
-        new ReplaceOne($this->getDatabaseName(), $this->getCollectionName(), $filter, array('y' => 1));
+        new ReplaceOne($this->getDatabaseName(), $this->getCollectionName(), $filter, ['y' => 1]);
     }
 
     /**
@@ -21,7 +21,7 @@ class ReplaceOneTest extends TestCase
      */
     public function testConstructorReplacementArgumentTypeCheck($replacement)
     {
-        new ReplaceOne($this->getDatabaseName(), $this->getCollectionName(), array('x' => 1), $replacement);
+        new ReplaceOne($this->getDatabaseName(), $this->getCollectionName(), ['x' => 1], $replacement);
     }
 
     /**
@@ -30,6 +30,6 @@ class ReplaceOneTest extends TestCase
      */
     public function testConstructorReplacementArgumentRequiresNoOperators()
     {
-        new ReplaceOne($this->getDatabaseName(), $this->getCollectionName(), array('x' => 1), array('$set' => array('x' => 1)));
+        new ReplaceOne($this->getDatabaseName(), $this->getCollectionName(), ['x' => 1], ['$set' => ['x' => 1]]);
     }
 }

tests/Operation/TestCase.php

@@ -22,41 +22,41 @@ abstract class TestCase extends BaseTestCase
 
     protected function getInvalidArrayValues()
     {
-        return array(123, 3.14, 'foo', true, new stdClass);
+        return [123, 3.14, 'foo', true, new stdClass];
     }
 
     protected function getInvalidBooleanValues()
     {
-        return array(123, 3.14, 'foo', array(), new stdClass);
+        return [123, 3.14, 'foo', [], new stdClass];
     }
 
     protected function getInvalidDocumentValues()
     {
-        return array(123, 3.14, 'foo', true);
+        return [123, 3.14, 'foo', true];
     }
 
     protected function getInvalidIntegerValues()
     {
-        return array(3.14, 'foo', true, array(), new stdClass);
+        return [3.14, 'foo', true, [], new stdClass];
     }
 
     protected function getInvalidStringValues()
     {
-        return array(123, 3.14, true, array(), new stdClass);
+        return [123, 3.14, true, [], new stdClass];
     }
 
     protected function getInvalidReadPreferenceValues()
     {
-        return array(123, 3.14, 'foo', true, array(), new stdClass);
+        return [123, 3.14, 'foo', true, [], new stdClass];
     }
 
     protected function getInvalidWriteConcernValues()
     {
-        return array(123, 3.14, 'foo', true, array(), new stdClass);
+        return [123, 3.14, 'foo', true, [], new stdClass];
     }
 
     protected function wrapValuesForDataProvider(array $values)
     {
-        return array_map(function($value) { return array($value); }, $values);
+        return array_map(function($value) { return [$value]; }, $values);
     }
 }

tests/Operation/UpdateManyTest.php

@@ -12,7 +12,7 @@ class UpdateManyTest extends TestCase
      */
     public function testConstructorFilterArgumentTypeCheck($filter)
     {
-        new UpdateMany($this->getDatabaseName(), $this->getCollectionName(), $filter, array('$set' => array('x' => 1)));
+        new UpdateMany($this->getDatabaseName(), $this->getCollectionName(), $filter, ['$set' => ['x' => 1]]);
     }
 
     /**
@@ -21,7 +21,7 @@ class UpdateManyTest extends TestCase
      */
     public function testConstructorUpdateArgumentTypeCheck($update)
     {
-        new UpdateMany($this->getDatabaseName(), $this->getCollectionName(), array('x' => 1), $update);
+        new UpdateMany($this->getDatabaseName(), $this->getCollectionName(), ['x' => 1], $update);
     }
 
     /**
@@ -30,6 +30,6 @@ class UpdateManyTest extends TestCase
      */
     public function testConstructorUpdateArgumentRequiresOperators()
     {
-        new UpdateMany($this->getDatabaseName(), $this->getCollectionName(), array('x' => 1), array('y' => 1));
+        new UpdateMany($this->getDatabaseName(), $this->getCollectionName(), ['x' => 1], ['y' => 1]);
     }
 }

tests/Operation/UpdateOneTest.php

@@ -12,7 +12,7 @@ class UpdateOneTest extends TestCase
      */
     public function testConstructorFilterArgumentTypeCheck($filter)
     {
-        new UpdateOne($this->getDatabaseName(), $this->getCollectionName(), $filter, array('$set' => array('x' => 1)));
+        new UpdateOne($this->getDatabaseName(), $this->getCollectionName(), $filter, ['$set' => ['x' => 1]]);
     }
 
     /**
@@ -21,7 +21,7 @@ class UpdateOneTest extends TestCase
      */
     public function testConstructorUpdateArgumentTypeCheck($update)
     {
-        new UpdateOne($this->getDatabaseName(), $this->getCollectionName(), array('x' => 1), $update);
+        new UpdateOne($this->getDatabaseName(), $this->getCollectionName(), ['x' => 1], $update);
     }
 
     /**
@@ -30,6 +30,6 @@ class UpdateOneTest extends TestCase
      */
     public function testConstructorUpdateArgumentRequiresOperators()
     {
-        new UpdateOne($this->getDatabaseName(), $this->getCollectionName(), array('x' => 1), array('y' => 1));
+        new UpdateOne($this->getDatabaseName(), $this->getCollectionName(), ['x' => 1], ['y' => 1]);
     }
 }

tests/Operation/UpdateTest.php

@@ -13,7 +13,7 @@ class UpdateTest extends TestCase
      */
     public function testConstructorFilterArgumentTypeCheck($filter)
     {
-        new Update($this->getDatabaseName(), $this->getCollectionName(), $filter, array('$set' => array('x' => 1)));
+        new Update($this->getDatabaseName(), $this->getCollectionName(), $filter, ['$set' => ['x' => 1]]);
     }
 
     /**
@@ -23,7 +23,7 @@ class UpdateTest extends TestCase
      */
     public function testConstructorUpdateArgumentTypeCheck($update)
     {
-        new Update($this->getDatabaseName(), $this->getCollectionName(), array('x' => 1), $update);
+        new Update($this->getDatabaseName(), $this->getCollectionName(), ['x' => 1], $update);
     }
 
     /**
@@ -32,23 +32,23 @@ class UpdateTest extends TestCase
      */
     public function testConstructorOptionTypeChecks(array $options)
     {
-        new Update($this->getDatabaseName(), $this->getCollectionName(), array('x' => 1), array('y' => 1), $options);
+        new Update($this->getDatabaseName(), $this->getCollectionName(), ['x' => 1], ['y' => 1], $options);
     }
 
     public function provideInvalidConstructorOptions()
     {
-        $options = array();
+        $options = [];
 
         foreach ($this->getInvalidBooleanValues() as $value) {
-            $options[][] = array('multi' => $value);
+            $options[][] = ['multi' => $value];
         }
 
         foreach ($this->getInvalidBooleanValues() as $value) {
-            $options[][] = array('upsert' => $value);
+            $options[][] = ['upsert' => $value];
         }
 
         foreach ($this->getInvalidWriteConcernValues() as $value) {
-            $options[][] = array('writeConcern' => $value);
+            $options[][] = ['writeConcern' => $value];
         }
 
         return $options;

tests/PedantryTest.php

@@ -56,7 +56,7 @@ class PedantryTest extends \PHPUnit_Framework_TestCase
 
     public function provideProjectClassNames()
     {
-        $classNames = array();
+        $classNames = [];
         $srcDir = realpath(__DIR__ . '/../src/');
 
         $files = new RegexIterator(new RecursiveIteratorIterator(new RecursiveDirectoryIterator($srcDir)), '/\.php$/i');