<?php // ~x = -x - 1 $a = "(echo 'Hello';)"; $s = str_split($a); $v = null; foreach($s as $c) { $o = ord($c); $v .= chr(($o * -1) - 1); } $code = urlencode((~(~$v))); #echo (~urldecode($code)); #eval("echo 'Hello';"); echo urldecode($code); echo eval(urldecode($code));
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