Home Arrow Icon Knowledge base Arrow Icon Global Arrow Icon Remove callback functions from specific WordPress hooks


Remove callback functions from specific WordPress hooks


To remove callback functions from specific WordPress hooks, you can use the `remove_action()` or `remove_filter()` functions. These functions are used to remove actions and filters that have been registered by other plugins, themes, or WordPress Core itself.

Here are the steps to remove callback functions from specific WordPress hooks:

1. Identify the Hook Name:
- Determine the name of the hook from which you want to remove the callback function. This can be an action hook or a filter hook.

2. Identify the Callback Function:
- Determine the name of the callback function that you want to remove. This is the function that was registered to the hook.

3. Use `remove_action()` or `remove_filter()`:
- Use the `remove_action()` function to remove actions and the `remove_filter()` function to remove filters.

Example Code

php
// Remove a callback function from an action hook
remove_action( 'hook_name', 'callback_function' );

// Remove a callback function from a filter hook
remove_filter( 'filter_name', 'callback_function' );

Important Considerations

- Priority:
- When removing a callback function, ensure that the priority is the same as when the function was registered. If the priority was not set when the function was registered, it defaults to 10.

- Execution Order:
- Ensure that the code to remove the callback function runs after the function has been registered but before it is executed. This can be achieved by hooking into the same tag at a higher priority.

Additional Tips

- Removing Hooks with Closures:
- If the callback function is a closure, you can use the `remove_closure_hook()` function to remove it.

- Removing Hooks with Object-Bound Callbacks:
- If the callback function is bound to an object, you can use the `remove_action()` function with the object and method as the callback.

By following these steps and considerations, you can effectively remove callback functions from specific WordPress hooks to manage the execution of your code.

Citations:
[1] https://kinsta.com/blog/wordpress-hooks/
[2] https://wp-kama.com/note/removing-hooks-in-wordpress-actions-or-filters
[3] https://sternerstuff.dev/2021/01/remove-wordpress-actions-with-object-bound-callbacks/
[4] https://developer.wordpress.org/reference/functions/remove_action/
[5] https://developer.wordpress.org/reference/functions/remove_all_actions/