.. _cannot-bind-an-instance-to-a-static-closure,-this-will-be-an-error-in-php-9:

Cannot bind an instance to a static closure, this will be an error in PHP 9
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Description
___________
 
The ``Closure::bind()`` method gives the scope of execution of a closure. And a static closure uses no scope, so the ``bind()`` method fails.

Example
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.. code-block:: php

   <?php
       $closure = static function () { return __METHOD__;};
   
       $closure->bindTo(new Stdclass());
       $closure();
   
   ?>

Solutions
_________

+ Remove the static option on the closure.
+ Remove the call to ``bind()``.


In previous PHP versions, this error message used to be :ref:`cannot-bind-an-instance-to-a-static-closure`.