Kiwik

<p>Add a Debug Bar to your WordPress website to debug and develop your themes, plugins, etc…</p>
<p>With the plugin you can find every variables you want to debug in the same place and use debug functions to display them.</p>
<h4>Prerequisites</h4>
<p>To fully help you to debug your website you need to add some code to your <code>wp-config.php</code> file.</p>
<pre><code>define( 'WP_DEBUG', true ); // PHP errors, notices and warnings will be displayed
define( 'SAVEQUERIES', true ); // Display queries in current page
define( 'WP_DISABLE_FATAL_ERROR_HANDLER', true ); // Disable WP Fatal error handler
</code></pre>
<h4>Usage of the debug functions</h4>
<p>To debug a simple variable you can use:</p>
<pre><code><?php dump( $var ); // Dump the variable(s) ?>
</code></pre>
<p>To debug a variable and stop the process after you can use:</p>
<pre><code><?php dd( $var ); // This will die after dumping the variable(s) ?>
</code></pre>
<h4>Debug a variable in the debug bar</h4>
<p>This is one of the main aspect of the plugin, to debug variables in a separate place.</p>
<p>The most difficult task when you debug a variable is to deal with container width, with the plugin you have a debug bar where you can add the variables of the current page.</p>
<p>To add a variable to the debug bar you can use the function bellow:</p>
<pre><code><?php kl_debug_add_var( $var ); ?>
</code></pre>
<p>You can add custom tabs in the debug bar to filter you variables:</p>
<pre><code><?php
kl_debug_add_var(
    $var, // The variable you want to debug
    'Your variable title', // If you want to name the variable
    'The section title', // The tab title
    'the-section-slug' // The tab slug
);
?>
</code></pre>
<h4>What’s Whoops in the setting panel?</h4>
<p>Whoops is the framework that we use to display error handling. (cf. Pretty error handler with stack frames)</p>


KL Debug

Friendly debug bar for developer, debug variables helpers and pretty error handler interface(powered by Whoops).

Michael Dance

<p>This humble plugin adds an option in Settings > General that controls who sees the WP Toolbar when viewing your site.</p>
<p>You can turn the Toolbar on or off per user role.</p>
<p>Note that this controls the public, front-end version of your site. When viewing the dashboard, the toolbar always appears.</p>
<p>How is this different from other plugins that do similar things? It’s smaller, cleaner, and doesn’t add any unnecesary settings pages. It’s also smart enough to hide the Toolbar option on user profiles if that user is already restricted from seeing the toolbar.</p>


Disable Toolbar

Control who sees the WP Toolbar when viewing your site.

KL Debug vs Disable Toolbar