3v4l.org

run code in 300+ PHP versions simultaneously
<?php hell: try { echo PHP; } catch (\Error $e) { if (str_contains($e->getMessage(), 'Undefined constant')) { $constValue = substr($e->getMessage(), 20, -1); define($constValue, $constValue); goto hell; } }

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63.77 ms | 408 KiB | 5 Q