3v4l.org

run code in 300+ PHP versions simultaneously
<?php $badwords = 'base64_decode+union+select'; foreach (array_keys($_GET) as $key){ foreach(explode('+',$badwords) as $badware){ $_GET[$key]=str_replace($badware, $empty_string,$_GET[$key]); } }

preferences:
30.2 ms | 402 KiB | 5 Q