3v4l.org

run code in 300+ PHP versions simultaneously
<?php $o = ""; $escape_char = $allowed_chars = array(); $string = "hzgtfrzutrdetzttedcuztivcretfuzrtzt"; for ($i = 0; $i < strlen($string); $i++) { $ch = $string[$i]; if (isset($allowed_chars[ord($ch)])) { $o.=$allowed_chars[ord($ch)]; } else if (ord($ch) == 27) { $i++; $ch = $string[$i]; if (isset($escape_char[ord($ch)])) { $o.=$escape_char[ord($ch)]; } } } echo $o;
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 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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:
342.96 ms | 406 KiB | 460 Q