no_null_property_initialization.rst

Rule no_null_property_initialization

Properties MUST not be explicitly initialised with null except when they have a type declaration (PHP 7.4).

Examples

Example #1

--- Original
+++ New
 <?php
 class Foo {
-    public $bar = null;
+    public $bar;
     public ?string $baz = null;
     public ?string $baux;
 }

Example #2

--- Original
+++ New
 <?php
 class Foo {
-    public static $foo = null;
+    public static $foo;
 }

Rule sets

The rule is part of the following rule sets:

• @PhpCsFixer
• @Symfony

References

• Fixer class: PhpCsFixer\Fixer\ClassNotation\NoNullPropertyInitializationFixer
• Test class: PhpCsFixer\Tests\Fixer\ClassNotation\NoNullPropertyInitializationFixerTest

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