PHP-CS-Fixer/doc/rules/cast_notation/no_short_bool_cast.rst

===========================
Rule ``no_short_bool_cast``
===========================

Short cast ``bool`` using double exclamation mark should not be used.

Examples
--------

Example #1
~~~~~~~~~~

.. code-block:: diff

   --- Original
   +++ New
    <?php
   -$a = !!$b;
   +$a = (bool)$b;

Rule sets
---------

The rule is part of the following rule sets:

- `@PhpCsFixer <./../../ruleSets/PhpCsFixer.rst>`_
- `@Symfony <./../../ruleSets/Symfony.rst>`_

References
----------

- Fixer class: `PhpCsFixer\\Fixer\\CastNotation\\NoShortBoolCastFixer <./../../../src/Fixer/CastNotation/NoShortBoolCastFixer.php>`_
- Test class: `PhpCsFixer\\Tests\\Fixer\\CastNotation\\NoShortBoolCastFixerTest <./../../../tests/Fixer/CastNotation/NoShortBoolCastFixerTest.php>`_

The test class defines officially supported behaviour. Each test case is a part of our backward compatibility promise.