feature #18094 [HttpFoundation] Add ParameterBag::getString() (alexandre-daubois)

This PR was merged into the 6.3 branch.

Discussion
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[HttpFoundation] Add `ParameterBag::getString()`

Fixes #18089

Commits
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7b1160c [HttpFoundation] Add `ParameterBag::getString()`

Author: OskarStark

components/http_foundation.rst

@@ -147,9 +147,13 @@ has some methods to filter the input values:
 :method:`Symfony\\Component\\HttpFoundation\\ParameterBag::getEnum`
     Returns the parameter value converted to a PHP enum;
 
+:method:`Symfony\\Component\\HttpFoundation\\ParameterBag::getString`
+    Returns the parameter value as a string;
+
 .. versionadded:: 6.3
 
-    The ``ParameterBag::getEnum()`` method was introduced in Symfony 6.3.
+    The ``ParameterBag::getEnum()`` and ``ParameterBag::getString()`` methods
+    were introduced in Symfony 6.3.
 
 :method:`Symfony\\Component\\HttpFoundation\\ParameterBag::filter`
     Filters the parameter by using the PHP :phpfunction:`filter_var` function.