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<?php define('CONSTANT', 1); define('_CONSTANT', 0); define('EMPTY', ''); var_dump(CONSTANT); $a = '5'; if (!empty(constant('EMPTY'))) { if (!(boolean) _CONSTANT) { echo 1; } } else if (constant('CONSTANT') == 1) { echo 2; }

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36.42 ms | 402 KiB | 5 Q