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Rule ``no_null_property_initialization``
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Properties MUST not be explicitly initialized with ``null`` except when they
have a type declaration (PHP 7.4).

Examples
--------

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

.. code-block:: diff

   --- Original
   +++ New
   @@ -1,4 +1,4 @@
    <?php
    class Foo {
   -    public $foo = null;
   +    public $foo;
    }

Rule sets
---------

The rule is part of the following rule set:

@PhpCsFixer
  Using the ``@PhpCsFixer`` rule set will enable the ``no_null_property_initialization`` rule.
