Get the Whitepaper called How to Exploit PHP Remotely to Bypass Filters and WAF Rules.
You can download it from the following link: https://packetstormsecurity.com/files/download/150926/exploit-php-remotely.pdf
Source: https://packetstormsecurity.com/files/150926/How-To-Exploit-PHP-Remotely-To-Bypass-Filters-And-WAF-Rules.html