Custom Fields Eraser
Powerful WordPress plugin for managing custom fields
Overview
Custom Fields Eraser is a powerful tool for WordPress administrators to manage and clean up custom fields in the database. It adds a new "Custom Fields" menu item in the WordPress admin menu, allowing users to view and delete custom fields, excluding some internal fields like _edit_last and _edit_lock.
This plugin is designed for experienced administrators. The list of custom fields can be very long, and the initial load time might be significant depending on the number of custom fields.
Why Use This Plugin
Over time, as you install and test various plugins and themes, your WordPress database can become cluttered with numerous custom fields. These fields can bloat your database, impacting performance and making it difficult to manage your data. Custom Fields Eraser helps you identify and remove unnecessary custom fields, keeping your database clean and optimized.
Features
Custom Fields Management
View and delete custom fields from the WordPress database.
Permission Verification
Ensures that only users with manage_options capability can access the plugin's functionalities.
Input Sanitization
Utilizes sanitize_text_field() to sanitize the $meta_key before it is used in SQL queries or displayed.
WordPress Functions
Employs WordPress functions like $wpdb->get_results() and $wpdb->delete() to handle database interactions securely.
AJAX Security
Uses check_ajax_referer() to validate the security token (Nonce) for AJAX requests.
Installation
- Download the plugin and upload it to the
/wp-content/plugins/directory. - Activate the plugin through the 'Plugins' menu in WordPress.
Usage
- After activation, navigate to the "Custom Fields" menu item in the WordPress admin menu.
- The plugin will display a list of all custom fields in the database.
- For each custom field, you will find a "Delete" button that allows you to remove the custom field from the database.
Security Features
Permission Verification
Functions such as custom_fields_manager_menu(), load_custom_fields_callback(), and delete_custom_field_callback() check if the user has the required manage_options capability before execution.
Sanitization of Inputs
The function sanitize_text_field() is used to clean the $meta_key before using it in SQL queries or displaying it.
WordPress Functions
Instead of direct database access, WordPress functions like $wpdb->get_results() and $wpdb->delete() are used, which inherently apply security measures such as escaping and query preparation.
AJAX Security Measures
AJAX functions use check_ajax_referer() to verify the validity of the security token (Nonce) before execution.
Notes
- This plugin is intended for experienced WordPress administrators.
- The list of custom fields can be extensive, leading to longer load times on the first call.
Contributing
- Fork the repository.
- Create a new branch (
git checkout -b feature-branch). - Commit your changes (
git commit -am 'Add some feature'). - Push to the branch (
git push origin feature-branch). - Create a new Pull Request.
License
This plugin is licensed under the GPLv3 or later.
Support
For support and feature requests, please open an issue on the GitHub repository.
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