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I ate three cookies 🍪 (v3.40.2) edition

Rule magic_constant_casing

Magic constants should be referred to using the correct casing.

Examples

Example #1

--- Original
+++ New
 <?php
-echo __dir__;
+echo __DIR__;

Rule sets

The rule is part of the following rule sets:

Source class

PhpCsFixer\Fixer\Casing\MagicConstantCasingFixer