=====================================
MongoDB\\Database::modifyCollection()
=====================================
.. versionadded:: 1.4
.. default-domain:: mongodb
.. contents:: On this page
   :local:
   :backlinks: none
   :depth: 1
   :class: singlecol
Definition
----------
.. phpmethod:: MongoDB\\Database::modifyCollection()
   Modifies a collection or view according to the specified
   ``$collectionOptions``.
   .. code-block:: php
      function modifyCollection($collectionName, array $collectionOptions, array $options = []): array|object
   This method has the following parameters:
   .. include:: /includes/apiargs/MongoDBDatabase-method-modifyCollection-param.rst
   The ``$options`` parameter supports the following options:
   .. include:: /includes/apiargs/MongoDBDatabase-method-modifyCollection-option.rst
Return Values
-------------
An array or object with the result document of the :manual:`collMod
</reference/command/collMod>` command.
Errors/Exceptions
-----------------
.. include:: /includes/extracts/error-invalidargumentexception.rst
.. include:: /includes/extracts/error-driver-runtimeexception.rst
Example
-------
The following example changes the expiration time of a TTL collection in the
``test`` database:
.. code-block:: php
   <?php
   $db = (new MongoDB\Client)->test;
   $result = $db->modifyCollection('users', [
       'keyPattern' => ['lastAccess' => 1],
       'expireAfterSeconds' => 1000
   ]);
   var_dump($result);
The output would then resemble::
   object(stdClass)#2779 {
     ["expireAfterSeconds_old"]=>
     int(3)
     ["expireAfterSeconds_new"]=>
     int(1000)
     ["ok"]=>
     float(1)
   }
See Also
--------
- :manual:`collMod </reference/command/collMod>` command reference in the MongoDB
  manual
 
  |