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<?php define('true', false, true); $a = true; var_dump($a);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Warning: define(): Argument #3 ($case_insensitive) is ignored since declaration of case-insensitive constants is no longer supported in /in/X3u6F on line 3 Warning: Constant true already defined in /in/X3u6F on line 3 bool(true)
Output for 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Deprecated: define(): Declaration of case-insensitive constants is deprecated in /in/X3u6F on line 3 Notice: Constant true already defined in /in/X3u6F on line 3 bool(true)
Output for 7.3.32 - 7.3.33, 7.4.26
bool(true)
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33
Notice: Constant true already defined in /in/X3u6F on line 3 bool(true)

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