Fulvio Notarstefano

<blockquote>
PHP Console allows you to handle PHP errors & exceptions, dump variables, execute PHP code remotely and many other things using <a href="https://chrome.google.com/webstore/detail/php-console/nfhmhhlpfleoednkpnnnkolmclajemef" rel="nofollow ugc">Google Chrome extension PHP Console</a> and <a href="https://github.com/barbushin/php-console" rel="nofollow ugc">PHP Console server library</a>.
</blockquote>
This implementation of PHP Console is a handy tool to make it easier to test on the fly any WordPress specific function or class (including those introduced by your active theme and plugins!) from a terminal and inspect results, catch errors and warnings with complete call stack trace straight from the Chrome JavaScript console. In other words, besides debugging, you can execute PHP or WordPress-specific PHP code straight from the terminal and print PHP variables in Chrome Dev Tools JavaScript console along with your normal JavaScript debugging and testing. Keep everything in one place, without leaving the browser to check for your logs or writing temporary PHP test code on a PHP file and refresh your browser page.
Note: PHP version 5.6.0 or above is required to use this plugin.
For support and pull requests, please refer to <a href="https://github.com/unfulvio/wp-php-console" rel="nofollow ugc">WP PHP Console GitHub repo</a> and read the instructions there – thank you.
<h3>Usage</h3>
After you entered WP PHP Plugin password, your browser address bar should show a yellow “key” icon, which, if clicked, will prompt for the password you have set earlier. 
The “key” icon will change into a “terminal” icon, click on it to open the PHP Console eval & options form.
After entering the correct password, you can use the Eval Terminal in the PHP Console eval & options form and run any PHP code from it, including WordPress’s own functions: enter one or more lines of PHP code in the black Eval terminal screen, press Ctrl+Enter and see the result in Chrome Dev Tools JavaScript console. 
The result includes the output, the return value and the net server execution time.
In your PHP code on the Server, you can call PHP Console debug statements like <code>PC::debug( $var, $tag )</code> to display PHP variables in the JavaScript console and optionally filter selected tags through the PHP Console eval & options form opened from the address bar in your browser.
In the JavaScript console you will see printed any `PC::debug()“ information, PHP errors, warnings, notices with optional stack trace, which will be useful to debug your plugin or theme.

WP PHP Console

Great tool for debugging wordpress plugins. Use it all the time!

Great plugin for debugging

this is what I wanted, does what it should for me

great tool

This plugin is very useful to debug php variable!

And show me stack ! 

Really Thank you !

Thank you very much!

As soon as I realized that Chrome extension is off in incognito mode by default and enabled it, I could enter password and got it to work immediately.

Great work

An implementation of PHP Console as a WordPress plugin. Use Chrome Dev Tools to debug your WordPress installation!

basvd

Note: This plugin does not work in WP 2.5. The AJAX referer check in WP 2.5 does not conflict with a hardened version of PHP, so this plugin is no longer adequate. 
If you still experience the permission problem it is likely your browser or a plugin.
This plugin fixes an issue that can cause several problems in the Administration Panel, including the following:
<ol>
<li>The “You don’t have permission to do that” error when performing certain actions, even though you are in fact logged in</li>
<li>The “Are you sure you want to edit this page: “”?” confirmation when trying to save a post or page</li>
<li>Inability to remove pages or posts using the Management panels</li>
<li>And possibly other problems that have similar symptoms</li>
</ol>
Most people who get these problems seem to be on a server that uses a hardened version of PHP. This version adds several security measures to PHP, including transparent cookie encryption. The WordPress function that checks whether you can perform certain actions in the Administration Panel (<code>check_ajax_referer()</code>) does not function properly because of this. This plugin replaces that function with a something that does take the cookie encryption into account.

AJAX Referer Fix

Fixes a problem that causes "You don't have permission to do that" errors. It replaces the pluggable check_ajax_referer() with a safe a …

WP PHP Console vs AJAX Referer Fix