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  4. Deprecation Checker
Deprecation Checker icon

Deprecation Checker

Deprecation Checker simply scans your plugins, themes, and custom directories for deprecated functions.

By Brian Fegter·Debug·Free
5(2 reviews)
·20 active installs·Updated 14 years ago
DownloadVisit HomepageCompare

As of April 2026, Deprecation Checker is a WordPress debug plugin with 20 active installations and a 5/5 rating from 2 reviews. It has been downloaded 3.4K+ times in total. Requires WordPress 3.3+ and PHP false+. Available on WordPress.org since 2012. Last updated 14 years ago — may have compatibility concerns. Top alternative: WP Crontrol.

5/52 reviews
20active installs
3.4K+total downloads
14 yearssince 2012

Overview

WP_DEBUG works well, however is not inclusive of all theme/plugin files that might not be loaded during certain page loads. Deprecation Checker allows you to view all the deprecated functions complete with path, line number, deprecation function name, and the new recommended function to use.

Deprecated files are collated directly from WordPress core itself, so this plugin is scalable with future versions of WordPress.

We’ve included a couple handy filters and constants to make this plugin flexible for your own needs:

  • Turn off plugin/theme directory checks
  • Add your own custom paths to check
  • Add your own deprecated functions to the search
Read full description on WordPress.org

Ratings & Reviews

52 reviews
5 ★
2
4 ★
0
3 ★
0
2 ★
0
1 ★
0

Compatibility

WordPress3.3+ requiredTested up to 3.3.2
PHPfalse+ required

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Frequently Asked Questions

Changelog

If you have a feature request or question, please use the Deprecation Checker support forum.

View full changelog on WordPress.org

Contributors

Brian FegterBrian Fegter
Plugin Info
Version
0.1
Last Updated
Feb 29, 2012
WP Requires
3.3+
Tested Up To
3.3.2
PHP Requires
false+
Active Installs
20
Downloads
3.4K+
Added
Feb 29, 2012
Business
Free

Tags

debugdebuggerdeprecatedeprecateddeprecation

Developer

B
Brian Fegter
2 plugins0.0M+ total installs
View all plugins →

Quick Compare

Deprecation Checker vs WP Crontrol→Deprecation Checker vs Query Monitor – The developer tools…→Deprecation Checker vs Debug Bar→

Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.