Peter Wooster

This plugin allows developers to debug PHP errors.
Features for Developers
<ul>
<li>You can get call stack trace when PHP errors are triggered.</li>
<li>This is particularly helpful in finding errors that are triggered by the WordPress deprecation and 
doing_it_wrong code. These errors are reported in the WordPress core instead of at the location 
where the incorrect usage actually occurs. </li>
<li>You can set the error level from the Settings page, the default is trap Notice and Deprecation errors</li>
</ul>
Additional Features
There are no additional features supported by Simple Error Handler. The code is simple, small and well documented, 
so you can use it as a starting point for your own error reporting or logging plugin.

Simple Error Handler

A simple plugin that reports the call stack trace when PHP errors occur.

WP Seed

Indabug is the debug console for WordPress.

Indabug

Попробовал данный плагин и был приятно удивлен его возможностями. Query Monitor и прочие тихо курят в сторонке. Спасибо

Очень удобный способ отладки под WordPress

Indabug is the debug console for WordPress.

Simple Error Handler vs Indabug