Grégory Viguier

The plugin adds a new tab in your admin bar with simple but useful indications and tools.
<ul>
<li>Displays the number of queries in your page and the amount of time to generate the page.</li>
<li>Displays the php memory usage and php memory limits (constants <code>WP_MEMORY_LIMIT</code> and <code>WP_MAX_MEMORY_LIMIT</code>).</li>
<li>displays the php version and WP version.</li>
<li>Displays <code>WP_DEBUG</code>, <code>SCRIPT_DEBUG</code>, <code>WP_DEBUG_LOG</code>, <code>WP_DEBUG_DISPLAY</code>, and error reporting values.</li>
</ul>
In your site front-end:
<ul>
<li>Lists the template and all template parts used in the current page (template parts added with <code>get_template_part()</code>). Compatible with WooCommerce’s templates.</li>
<li><code>$wp_query</code>: this will open a lightbox displaying the content of <code>$wp_query</code>. Click the lightbox title to reload the value, click outside the lightbox to close it.</li>
</ul>
In your site administration:
<ul>
<li>Admin hooks: lists some oftenly used hooks (like <code>admin_init</code>). The indicator to the right of the line tells you how many times the hook has been triggered by a callback. A “P” means the hook has a parameter: hover it for more details. Click a hook (on its text) to auto-select its code, for example: click admin_init to select <code>add_action( 'admin_init', '' );</code>.</li>
<li><code>$current_screen</code>: displays the value of 4 properties of this object: <code>id</code>, <code>base</code>, <code>parent_base</code>, <code>parent_file</code>.</li>
<li><code>$...now</code>: displays the value of the well-known variables <code>$pagenow</code>, <code>$typenow</code>, and <code>$taxnow</code>.</li>
<li>On a user profile page, <code>$userdata</code>: : this will open a lightbox displaying the user’s data.</li>
</ul>
You can decide who’s gonna use this plugin (go to your profile page for all the settings). This way, the plugin’s items won’t show up to other users (your client for example). 
Also, a new menu item <code>Code Tester</code> will appear. There you are able to do some tests with your code.

Admin Bar Tools

I'm using this wonderfull tool in all my project and ask my studients to use it when they dev for WordPress.

Make a great job

In all my dev sites

This is one of those plugins I use on every WordPress project. The UI/UX is excellent, it's always there in the admin bar, you don't need to load anything. 

It's just a pity it's not updated to the latest WordPress versions. I sure hope this is not abandoned.

Thanks for sharing your work, @greglone.

So useful. Too bad it's not updated

Adds some small development tools to the admin bar.

Alley

Matthew Boynes

This plugin provides a simple interface for testing your custom rewrite rules.
The purpose of this plugin is to be able to test your own rewrite rules, so 
you’re probably most interested in knowing how to do that, right? The plugin 
provides a filter, <code>rewrite_testing_tests</code> to add your own tests. That filter 
passes an associative array of name => tests. The tests array is an associative 
array of URI => expected match. In the outer array, the “name” is arbitrary and 
for your own reference. In the inner array, the “URI” is the path you want to 
test, and the “expected match” is what WordPress should find as a rewrite 
match.
Enough chit-chat, here’s an example:
<pre><code>function my_rewrite_tests( $tests ) {
 return array(
 'Events' => array(
 '/event/super-bowl/' => 'index.php?event=$matches[1]',
 '/event/super-bowl/page/2/' => 'index.php?event=$matches[1]&paged=$matches[2]'
 )
 );
}
add_filter( 'rewrite_testing_tests', 'my_rewrite_tests' );
</code></pre>
You can see the <code>test_cases()</code> method for a full suite of tests for the “Day 
and Name” permalink structure. It’s not necessary to leave these in (in fact, 
the above demo would wipe them out), unless you want to make sure that your 
custom rewrites aren’t affecting core rewrites. If you aren’t using “Day and 
Name” permalinks, you’ll need to adjust the tests to fit your permalink 
structure.
<h3>Todo</h3>
<ul>
<li>Add a debug bar extension which reads a transient; the transient would be 
updated whenever rewrite rules are flushed. The debug bar extension would 
show pass/fail status and link directly to the settings page.</li>
<li>Add tests for other permalink structures?</li>
<li>Add a way to run this as part of phpunit</li>
</ul>

Rewrite Rule Testing

Regex and WordPress rewrite rules are probably my two Least Favourite Things, so this plugin is essential for making sure I haven't messed anything up :)



Nice

Unit test your rewrite rules from the WordPress Admin.

Admin Bar Tools vs Rewrite Rule Testing