Debug PHP with Firebug and FirePHP

http://www.sitepoint.com/blogs/2010/02/09/debug-php-firebug-firephp/

Debug PHP with Firebug and FirePHP

Quick tutorial on how to use FirePHP for basic PHP debugging with Firebug.

Charles Web Debugging Proxy

http://www.charlesproxy.com/

Charles Web Debugging Proxy

“Charles is an HTTP proxy / HTTP monitor / Reverse Proxy that enables a developer to view all of the HTTP and SSL / HTTPS traffic between their machine and the Internet. This includes requests, responses and the HTTP headers (which contain the cookies and caching information).”

Charles

http://www.charlesproxy.com/index.php

Web Debugging Proxy | HTTP Monitor | HTTP Proxy | HTTPS/SSL Proxy | Reverse Proxy