WP Plugin Parser
Parse WordPress plugins to see what functions, classes and methods they use.
by keesiemeijer · github.com/keesiemeijer/wp-plugin-parser · website
Install
No release zip yet. The repository archive installs, but the folder name will carry the branch suffix and updates will not flow:
wp plugin install https://github.com/keesiemeijer/wp-plugin-parser/archive/refs/heads/master.zipReadme
WP Plugin Parser
Version: 5.2.0
Requires at least: 4.0
Tested up to: 5.2
Parsed JSON: 5.2
This WordPress plugin lets you see what functions, classes and methods are used by plugins.
Features:
- Warnings are displayed for plugins that use
deprecatedorblacklistedfunctions. - Allows you to check if a plugin is compatible with a specific PHP version.
- The minimum
Requires at leastversion needed for a plugin is automatically calculated. - Exclude directories for parsing (e.g.
node_modules,vendor).
The WP Parser is used for parsing.
The PHPCompatibility sniffs are used to check for PHP version compatibility.
To get the relevant WordPress information (since, deprecated etc) this plugin references JSON files (created by the WP Parser JSON plugin).
See the Parsed JSON version above for what WordPress version is referenced.
Installation
Download or clone this repository in your plugins folder and install the dependencies (WP Parser).
# Go to the plugin folder
cd wp-plugin-parser
# Install dependencies
composer install
What gets parsed
All plugin files, functions, classes and methods are parsed to see what functions, classes and methods they use. The since and deprecated attributes are only checked for functions and classes. Meaning, methods are not (yet) flagged when deprecated, and are not used for calculating the Requires at least version.
False positives
This tool can't detect if a plugin actively checks for compatibility with a PHP version. This means that if a plugin fails the compatibility check it could well be aware of this issue. You will have to inspect the plugin manually, to make sure it fails gracefully and doesn't produce errors.
PHP language constructs like eval() are not picked up by the parser. This plugin finds the language constructs die(), eval() and exit() with a regular expression. Be aware that this can lead to false positives.
Settings Page.
The settings page for this plugin is at wp-admin > Tools > WP Plugin Parser.

Parse Results
