3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'cat'; $b = 'cats'; $result; for ($i = 0; $i < strlen($a); $i++) { $result |= (ord($a[$i]) ^ ord($b[$i])); } $c = ($result == 0) ? "equal" : "not equal";

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41.06 ms | 402 KiB | 5 Q