Debug Bar


Adds a debug menu to the admin bar that shows query, cache, and other helpful debugging information.

A must for developers!

When WP_DEBUG is enabled it also tracks PHP Warnings and Notices to make them easier to find.

When SAVEQUERIES is enabled the mysql queries are tracked and displayed.

To enable these options, add the following code to your wp-config.php file:

define( 'WP_DEBUG', true );
define( 'SAVEQUERIES', true );

Add a PHP/MySQL console with the Debug Bar Console plugin.

There are numerous other add-ons available to get more insight into, for instance, the registered Post Types, Shortcodes, WP Cron, Language file loading, Actions and Filters and so on. Just search the plugin directory for ‘Debug Bar’.


Use automatic installer.


Installation Instructions

Use automatic installer.


Deprecated Code

I get this warning notice in my dev site:

Notice: The called constructor method for Debug_Bar_Panel::Debug_Bar_Panel in Debug_Bar_Panel is deprecated since version 0.8.3! Use
__construct() instead. in /home/lonewol4/staging/1/wp-includes/functions.php on line 3894

I’m running PHP 7.1

Not really useful

You can see only few informations and you have to set WP_DEBUG, that you can not use in production environment. There are other debug plugins, those are much better.

Lire les 55 avis

Contributeurs & développeurs

« Debug Bar » est un logiciel libre. Les personnes suivantes ont contribué à cette extension.


“Debug Bar” a été traduit dans 4 locales. Remerciez l’équipe de traduction pour ses contributions.

Traduisez « Debug Bar » dans votre langue.

Le développement vous intéresse ?

Parcourir le code, consulter le SVN dépôt, ou s’inscrire au journal de développement par RSS.



Added panel navigation to toolbar.
Improved localization support.
Security fixes.


Updated to avoid incompatibilities with some extensions.


Updated to avoid PHP7 Deprecated notices.


Updated to handle a new deprecated message in WordPress 4.0.


Minor security fix.


WordPress 3.3 compatibility
UI refresh
Removed jQuery UI requirement
Full screen by default
New debug-bar query parameter to show on page load
Removed display cookies
JavaScript error tracking (disabled by default)


Made compatible with PHP < 5.2.0
CSS Tweaks
Load JavaScript in Footer
Fixed display issues for WP_Query debug on CPT archives pages
SQL/DB error tracking


Added maximize/restore button
Added cookie to keep track of debug bar state
Added post type information to WP_Query tab
Bug fix where bottom of page was obscured in the admin


New UI
Backend rewritten with a class for each panel
Many miscellaneous improvements


Compatibility updates for trunk


Added DB Version information
Updated PHP Warning and Notice tracking so that multiple different errors on the same line are tracked
Compatibility updates for trunk


Added WordPress Query infomation
Added Request parsing information


Added PHP Notice / Warning tracking when WP_DEBUG enabled
Added deprecated function usage tracking


Initial Release