3v4l.org

run code in 300+ PHP versions simultaneously
<?php $text = 'yachtsmanship'; $alphabet = 'abcdefghijklmnopqrstuvwxyz'; $result = $alphabet; foreach (str_split($text) as $char) { if (false != strpos($char,$result)) { } } echo $result;

preferences:
31.94 ms | 402 KiB | 5 Q