- var_dump: documentation ( source)
- preg_match: documentation ( source)
<?php
preg_match('#([%]2[0bB]|[=]|[+])[(]?[Ss][Ee][Ll][Ee][Cc][Tt]([%]2[0bB]|[+])[^\r\x00-\x19\x7f-\xff]+([%]2[0bB]|[+])[Ff][Rr][Oo][Mm]([%]2[0bB]|[+])#', "http://172.104.131.19/1/?name=admin%27%20OR%20%271%27%20=%20%271%27%20UNION%20ALL%20SELECT%20*%20FROM%20usera%20%27", $a);
var_dump($a);