assign_null_coalescing_to_coalesce_equal.rst

Rule assign_null_coalescing_to_coalesce_equal

Use the null coalescing assignment operator ??= where possible.

Examples

Example #1

--- Original
+++ New
 <?php
-$foo = $foo ?? 1;
+$foo ??= 1;

Rule sets

The rule is part of the following rule sets:

• @PHP74Migration
• @PHP80Migration
• @PHP81Migration
• @PHP82Migration
• @PHP83Migration
• @PHP84Migration

References

• Fixer class: PhpCsFixer\Fixer\Operator\AssignNullCoalescingToCoalesceEqualFixer
• Test class: PhpCsFixer\Tests\Fixer\Operator\AssignNullCoalescingToCoalesceEqualFixerTest

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