This plugin hasn’t been tested with the latest 3 major releases of WordPress. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.

Plugin Inspector


The Plugin Inspector plugin is an easy way to check plugins installed on your WordPress and make sure that plugins do not use deprecated WordPress functions and some unsafe functions like eval, base64_decode, system, exec, etc. Some of those functions may be used to load malicious code (malware) from the external source directly to the site or WordPress database.


  • Scans plugins for deprecated WordPress functions
  • Scans plugins for unsafe functions like eval, base64_decode, system, exec, etc.
  • Checks plugins to find vulnerabilities listed in WPScan Vulnerability Database
  • Beautiful source code viewer with highlighting

Plugin Inspector allows you to view all the deprecated functions complete with path, line number, deprecation function name, and the new recommended function to use. The checks are run through a simple admin page and all results are displayed at once. This is very handy for plugin developers or anybody who want to know more about installed plugins.

All code that uses the deprecated functions should be converted to use its replacement if one exists. Because deprecated functions are no longer supported may be removed from future versions of WordPress.

To check the theme files, please, use Theme Check plugin.

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  • Plugin Inspector is scanning files and looking for deprecated and unsafe function
  • Beautiful source code viewer with highlighted issues


  1. Upload the Plugin Inspector folder to the plugins directory in your WordPress installation.
  2. Activate the plugin through the WordPress admin interface.


What PHP functions Plugin Inspector treats as unsafe?

Generally, most of those functions are safe, but under certain circumstances those functions may be used to hack site or to load and execute malicious code (malware). This list is not full and will be constantly updating. Any suggestions are welcome.

  • eval
  • system
  • base64_decode
  • shell_exec
  • exec
  • assert
  • passthru
  • pcntl_exec
  • proc_open
  • popen
  • dl
  • create_function
  • call_user_func
  • call_user_func_array
  • file_get_contents
  • socket_create
  • curl_exec
  • wp_remote_request
  • wp_remote_get
  • wp_remote_post
  • wp_safe_remote_post
  • wp_remote_head


31. janúar, 2018 2 replies
I am a fan of the Plugin Inspector plugin. One of the things that I read on the site of our firewall provider was to check the code of our plugins one by one. This plugin helped me a lot to achive that faster. Whith these data I even could made a risk analisys of our plugins. That helped us decide to stop using a plugin that seemed too vulnerable compared to others. Later we found out it was cataloged as unsafe by JetPack, Accunetix and many others. Making a risk analysis is time consuming but worth it. That’s why I want to request the developers to consider this feature request: The idea is to present a risk score in the plugin list that would for example be calculated like this: Risk Score: Number of Low risk findings + 5* Number of Medium Risk Findings + 10* Number of High Risk Findings + 10* Number of Deprecated Findings That and a way to order the list based on the score, which would easily make it clear which one of your plugins you should start inspecting right away or look for alternatives. Cheers
12. ágúst, 2017 1 reply
This is perfect for plugins developers, I love it! Easy to use and scans fast the plugins. I like that you can scan one plugin at a time, other plugins like this were scanning all plugins at the same time. And you can click on the warning and you are taken to the source file! Thanks for this very useful plugin!
3. september, 2016
A Supervisor for all other plugins!
3. september, 2016 1 reply
Every plugin developer should be using this. Thankyou Gioni.
3. september, 2016 1 reply
Thank you very much for developing this plugin and keeping it up-to date. Thankful to your efforts and time.
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“Plugin Inspector&#8221 er opinn hugbúnaður. Eftirfarandi aðilar hafa lagt sitt af mörkum við smíði þessarar viðbótar.


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Interested in development?

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



  • Added cool and convenient code viewer to view found issues in the PHP code.
  • Code optimization


  • Initial version