Grab the latest php.ini developmental version and discover new or previously hidden php runtime configuration settings... ahead of everyone else!
While testing the exploitability of your target and mapping out vulnerabilities it is important to gain access inside the targets defenses so that you can establish an internal foothold like a owned box or switch. This is so you can use a tool to discover the packet-filtering being used, and literally map out the firewall/IDS rules. Needless to say that really provides you with a lot more complete vulnerability assessment to help discover more weak spots in the system.
Apache Documentation Google Custom Search Engine is a great place to go looking for mod_rewrite, .htaccess, and other Apache HTTPD related topics.
Demo php cURL code, that automatically logs into Google AdSense, using cookies and post fields with the POST method.