Variable Inspector


Variable Inspector allows you to easily inspect your PHP $variables in a visually clean manner at a central dashboard in wp-admin. It aims to be an easy and useful enough debug tool.

It provides a single-line code to inspect your variable (see “How to Use” below). Nothing is shown to site visitors nor being output on the frontend, and the $variable content is nicely formatted for review using var_dump(), var_export() and print_r() on the inspector dashboard in wp-admin.

It’s a real time-saver for scenarios where Xdebug or even something like Ray is not ideal or simply an overkill. For example, when coding on a non-local environment via tools like Code Snippets, WPCodeBox, Scripts Organizer or Advanced Scripts. Additionally, because it is a regular WordPress plugin, you simply install, activate and use without the need for complicated configuration.

How to Use

Simply place the following line anywhere in your code after the $variable_name you’d like to inspect:

do_action( 'inspect', [ 'variable_name', $variable_name ] );

If you’d like to record the originating PHP file and line number, append the PHP magic constants __FILE__ and __LINE__ as follows.

do_action( 'inspect', [ 'variable_name', $variable_name, __FILE__, __LINE__ ] );

This would help you locate and clean up the inspector lines once you’re done debugging.

Give Back


  • The main Variable Inspector page


How was this plugin built?

Variable Inspector was built with: WordPress Plugin Boilerplate | | CodeStar framework | Simple Accordion | Fomantic UI. It was originally inspired by WP Logger.


May 17, 2022
Works great on a single install, but not so much on a multisite. Any interest in making it work on a multisite? Either way, thanks for your work, love this thing.
Read all 1 review

Contributors & Developers

“Variable Inspector” is open source software. The following people have contributed to this plugin.


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Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.


1.3.2 (2022.05.26)

  • Confirmed compatibility with WordPress 6.0

1.3.1 (2022.05.19)

  • Fixed output via var_export()
  • Better sanitization of variable name output
  • Update plugin description

1.2.0 (2022.04.14)

  • Fixed output buffering mistake causing the output of the ‘1’ character in variable values
  • NEW: implement tabbed output of var_export, var_dump and print_r

1.1.0 (2022.04.13)

  • Fixed “Fatal error: Uncaught Error: Call to undefined function dbDelta()”. Thanks to @rashedul007 for the fix!

1.0.1 (2022.04.13)

  • Initial stable release