.. _cannot-use-the-static-modifier-on-a-parameter:

Cannot use the static modifier on a parameter
---------------------------------------------
 
.. meta::
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		Cannot use the static modifier on a parameter: It is not possible to use ``static`` as a type for a parameter.
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	:og:title: Cannot use the static modifier on a parameter
	:og:description: It is not possible to use ``static`` as a type for a parameter
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Description
___________
 
It is not possible to use ``static`` as a type for a parameter. It is possible for a return value, but not for parameters, not properties.

Example
_______

.. code-block:: php

   <?php
   
       class X {
           function foo(static $argument) {
           
           }
       }
   
   ?>

Solutions
_________

+ Use self pseudo-type.
+ Use the name of the class as type.
+ Use one of the interface as type.

Changed Behavior
________________

This error may appear following an evolution in behavior, in previous versions. See ` <https://php-changed-behaviors.readthedocs.io/en/latest/behavior/.html>`_.