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MongoDB\\Collection::dropIndex()
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.. default-domain:: mongodb
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   :local:
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   :class: singlecol
Definition
----------
.. phpmethod:: MongoDB\\Collection::dropIndex()
   Drop an index from the collection.
   .. code-block:: php
      function dropIndex($indexName, array $options = []): array|object
   This method has the following parameters:
   .. include:: /includes/apiargs/MongoDBCollection-method-dropIndex-param.rst
   The ``$options`` parameter supports the following options:
   .. include:: /includes/apiargs/MongoDBCollection-method-dropIndex-option.rst
Return Values
-------------
An array or object with the result document of the :manual:`dropIndexes
</reference/command/dropIndexes>` command. The return type will depend on the
``typeMap`` option.
Errors/Exceptions
-----------------
.. include:: /includes/extracts/error-unsupportedexception.rst
.. include:: /includes/extracts/error-invalidargumentexception.rst
.. include:: /includes/extracts/error-driver-runtimeexception.rst
Example
-------
The following drops an indexes with name ``borough_1`` from the ``restaurants``
collection in the ``test`` database:
.. code-block:: php
   <?php
   $collection = (new MongoDB\Client)->test->restaurants;
   $result = $collection->dropIndex('borough_1');
   var_dump($result);
The output would then resemble::
   object(MongoDB\Model\BSONDocument)#9 (1) {
     ["storage":"ArrayObject":private]=>
     array(2) {
       ["nIndexesWas"]=>
       int(2)
       ["ok"]=>
       float(1)
     }
   }
See Also
--------
- :phpmethod:`MongoDB\\Collection::dropIndexes()`
- :doc:`/tutorial/indexes`
- :manual:`dropIndexes </reference/command/dropIndexes>` command reference in
  the MongoDB manual
- :manual:`Index documentation </indexes>` in the MongoDB manual
 
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