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run code in 300+ PHP versions simultaneously
<?php define('true', false, true); define('false', true, true); $a = false; var_dump($a === false);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Warning: define(): Argument #3 ($case_insensitive) is ignored since declaration of case-insensitive constants is no longer supported in /in/aCVX0 on line 3 Warning: Constant true already defined in /in/aCVX0 on line 3 Warning: define(): Argument #3 ($case_insensitive) is ignored since declaration of case-insensitive constants is no longer supported in /in/aCVX0 on line 4 Warning: Constant false already defined in /in/aCVX0 on line 4 bool(true)
Output for 7.3.12 - 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/aCVX0 on line 3 Notice: Constant true already defined in /in/aCVX0 on line 3 Deprecated: define(): Declaration of case-insensitive constants is deprecated in /in/aCVX0 on line 4 Notice: Constant false already defined in /in/aCVX0 on line 4 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 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.29 - 7.2.33
Notice: Constant true already defined in /in/aCVX0 on line 3 Notice: Constant false already defined in /in/aCVX0 on line 4 bool(true)
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236.22 ms | 404 KiB | 354 Q