==========================================
MongoDB\\Model\\IndexInfo::isGeoHaystack()
==========================================

.. versionadded:: 1.4

.. default-domain:: mongodb

.. contents:: On this page
   :local:
   :backlinks: none
   :depth: 1
   :class: singlecol

Definition
----------

.. phpmethod:: MongoDB\\Model\\IndexInfo::isGeoHaystack()

   Return whether the index is a :manual:`geoHaystack
   </core/geohaystack>` index.

   .. code-block:: php

      function isGeoHaystack(): boolean

Return Values
-------------

A boolean indicating whether the index is a geoHaystack index.

Examples
--------

.. code-block:: php

   <?php

   $collection = (new MongoDB\Client)->selectCollection('test', 'places');

   $collection->createIndex(['pos' => 'geoHaystack', 'x' => 1], ['bucketSize' => 5]);

   foreach ($collection->listIndexes() as $index) {
       if ($index->isGeoHaystack()) {
           printf("%s has bucketSize: %d\n", $index->getName(), $index['bucketSize']);
       }
   }

The output would then resemble::

   pos_geoHaystack_x_1 has bucketSize: 5

See Also
--------

- :phpmethod:`MongoDB\\Collection::createIndex()`
- :phpmethod:`MongoDB\\Collection::listIndexes()`
- :manual:`geoHaystack Indexes </core/geohaystack>` reference in the MongoDB
  manual