Mar 7, 2017 · Mar 6, 2017
diff --git a/components/config/definition.rst b/components/config/definition.rst
 above, it is possible to have multiple connection arrays (containing a ``driver``,
 ``host``, etc.).

 .. versionadded:: 3.3
    The ``castToArray()`` helper was added in Symfony 3.3.

 Sometimes, to improve the user experience of your application or bundle, you may
 allow to use a simple string or numeric value where an array value is required.
 Use the ``castToArray()`` helper to turn those variables into arrays::

    ->arrayNode('hosts')
        ->beforeNormalization()->castToArray()->end()
        // ...
    ->end()

 Array Node Options
 ~~~~~~~~~~~~~~~~~~

 - ``thenUnset()``

 Usually, "then" is a closure. Its return value will be used as a new value
 for the node, instead
 of the node's original value.
 for the node, instead of the node's original value.

 Processing Configuration Values
 -------------------------------
Original file line number	Diff line number	Diff line change
Expand Up		@@ -190,6 +190,18 @@ inside the current node. According to the prototype definition in the example
		above, it is possible to have multiple connection arrays (containing a ``driver``,
		``host``, etc.).

		.. versionadded:: 3.3
		The ``castToArray()`` helper was added in Symfony 3.3.

		Sometimes, to improve the user experience of your application or bundle, you may
		allow to use a simple string or numeric value where an array value is required.
		Use the ``castToArray()`` helper to turn those variables into arrays::

		->arrayNode('hosts')
		->beforeNormalization()->castToArray()->end()
		// ...
		->end()

		Array Node Options
		~~~~~~~~~~~~~~~~~~

Expand DownExpand Up		@@ -750,8 +762,7 @@ A validation rule also requires a "then" part:
		- ``thenUnset()``

		Usually, "then" is a closure. Its return value will be used as a new value
		for the node, instead
		of the node's original value.
		for the node, instead of the node's original value.

		Processing Configuration Values
		-------------------------------
Expand Down