WordPress.org

This advanced debugging plugin is custom-made for WordPress Developers, Plugin Developers, or anyone wanting to see under the hood of their website and diagnose problems such as with the AskApache PassPro Plugin.

A standalone plugin, you set which debug output settings you want, and whether to turn it on or off. Then every page in your administration panel will include the debug output in the footer using the 'admin_footer' action. Or you can also output in the wp_footer. Additionally, it has the capability of live-debugging, which changes your php.ini error settings on-the-fly for live debugging.

These are the debugging modules, each can be set to basic or verbose.

• Information about Owner/User/File permissions
• Function Information
• Extensions Loaded by PHP
• Files included by php
• Information about Loaded Classes
• Your PHP.ini settings
• Information from phpinfo
• Defined Constants and variables
• Global Server/Request Information
• WordPress RewriteRules
• Database Queries
• File Permissions
• Posix Info
• Socket/Stream Debugging

1. http://www.askapache.com/
2. http://www.php.net/