How to debug php code in dreamweaver cs5?

If it doesn't support debugging are there any extensi开发者_运维知识库ons or plugins out there?

Dreamweaver, even if it supports syntax-highlighting of PHP source, isn't quite known as a PHP-development environment ; so I'm not sure it supports debugging of PHP code.

Instead, I would recommend you use another more PHP-Oriented IDE, like :

• Eclipse PDT (free -- not sure if it's maintained as much as it was a couple of month ago)
• netbeans (free)
• PHPStorm (not free)

Those three all support debugging with the Xdebug extension.

You can use FirePHP with Firebug on any IDE including Dreamweaver. http://www.firephp.org/