3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'sd'; //echo $a !== ''; echo preg_match('^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?', 'http://wewewe');

preferences:
37.51 ms | 402 KiB | 5 Q