DOCSP-44237 flags Option deprecated

source/reference/method/MongoDBDatabase-createCollection.txt

@@ -117,6 +117,28 @@ Parameters
 
          .. versionadded:: 1.9
 
+     * - flags
+       - integer
+       - Available for the MMAPv1 storage engine only to set the ``usePowerOf2Sizes`` and 
+         ``noPadding`` flags.
+
+         The library provides constants that you can combine with a
+         :php:`bitwise OR operator <language.operators.bitwise>` to set the flag
+         values:
+
+         - ``MongoDB\Operation\CreateCollection::USE_POWER_OF_2_SIZES``: ``1``
+         - ``MongoDB\Operation\CreateCollection::NO_PADDING``: ``2``
+
+         Defaults to ``1``.
+
+         MongoDB 3.0 and later ignores the ``usePowerOf2Sizes`` flag. See
+         :manual:`collMod </reference/command/collMod>` and
+         :manual:`db.createCollection()
+         </reference/method/db.createCollection>` for more information.
+
+         *Deprecated as of v1.21*: This option is deprecated and will be removed in 
+         {+php-library+} v2.0. 
+
      * - indexOptionDefaults
        - array|object
        - Allows users to specify a default configuration for indexes when

source/whats-new.txt

@@ -134,6 +134,9 @@ improvements, and fixes:
   ``Database::selectCollection()`` methods will be deprecated and
   replaced by these new methods in a future driver release, so consider
   changing the usages in your application.
+
+- The ``flags`` field, used for the deprecated MMAPv1 storage engine, is now 
+  deprecated and will be removed in {+library-short+} v2.0.
 
 .. _php-lib-version-1.20: