.. _strict_types-declaration-must-not:

strict_types declaration must not
---------------------------------
 
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Description
___________
 
``declare()`` supports a block form for most directives, such as ``declare(ticks = 1) { ... }``, which scopes the setting to the code inside the block. ``strict_types`` is different: it is a compile-time, whole-file setting, not something that can be toggled for a portion of the script. Because of that, the block form is rejected outright.

The full message reads: ``strict_types declaration must not use block mode``.

Example
_______

.. code-block:: php

   <?php
   
   declare(strict_types = 1) {
       var_dump(strlen('abc'));
   }
   
   ?>


Literal Examples
****************
+ strict_types declaration must not use block mode

Solutions
_________

+ Remove the curly braces, and use ``declare(strict_types = 1);`` as a simple statement.

Related Error Messages
______________________

+ :ref:`strict_types-declaration-must-be-the-very-first-statement-in-the-script`
+ :ref:`strict_types-declaration-must-have-0-or-1-as-its-value`
+ :ref:`strict_types-declaration-must-be`

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>`_.