3v4l.org

run code in 300+ PHP versions simultaneously
<?php function decrypt($tmp_0) { $tmp_1 = strtolower(strrev($tmp_0)); $tmp_2 = (hexdec(substr($tmp_1, 0, 4)) ^ hexdec('BFF')) ^ hexdec('D77D'); $tmp_3 = substr($tmp_1,4); unset($tmp_4); for($tmp_5=0; $tmp_5 < strlen($tmp_3); $tmp_5+=6) { ++$tmp_6; $tmp_7 = ($tmp_6 * $tmp_6) ^ hexdec('6E'); } } ?>

preferences:
34.92 ms | 402 KiB | 5 Q