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=====================================
MongoDB\\MapReduceResult::getTiming()
=====================================
.. default-domain:: mongodb
.. contents:: On this page
:local:
:backlinks: none
:depth: 1
:class: singlecol
Definition
----------
.. phpmethod:: MongoDB\\MapReduceResult::getTiming()
Returns timing statistics for the map-reduce operation.
.. code-block:: php
function getTiming(): array
Timing statistics will only be available if the ``verbose`` option was
specified for :phpmethod:`MongoDB\\Collection::mapReduce()`.
Return Values
-------------
An array of timing statistics for the map-reduce operation. If no timing
statistics are available, the array will be empty.
Examples
--------
This example specifies the ``verbose`` option for
:phpmethod:`MongoDB\\Collection::mapReduce()` and reports the timing statistics
for a map-reduce operation.
.. code-block:: php
<?php
$collection = (new MongoDB\Client)->test->zips;
$map = new MongoDB\BSON\Javascript('function() { emit(this.state, this.pop); }');
$reduce = new MongoDB\BSON\Javascript('function(key, values) { return Array.sum(values) }');
$out = ['inline' => 1];
$result = $collection->mapReduce($map, $reduce, $out, ['verbose' => true]);
var_dump($result->getTiming());
The output would then resemble::
array(5) {
["mapTime"]=>
int(163)
["emitLoop"]=>
int(233)
["reduceTime"]=>
int(9)
["mode"]=>
string(5) "mixed"
["total"]=>
int(233)
}
See Also
--------
- :phpmethod:`MongoDB\\Collection::mapReduce()`
- :manual:`mapReduce </reference/command/mapReduce>` command reference in the
MongoDB manual