How to use deprecated_hook_trigger_error filter in WordPress

deprecated_hook_trigger_error filter

Filters whether to trigger deprecated hook errors.

To use deprecated_hook_trigger_error filter, first you have to register it using add_filter. You can write this code into functions.php of your activated theme or in a custom WordPress Plugin.

We always prefer to create a custom WordPress Plugin while using hooks so nothing breaks when you update your WordPress Theme in the future.

In the below live example, we have defined a function weplugins_modify_deprecated_hook_trigger_error_defaults which takes 1 parameter and is registered using add_filter. The first parameter deprecated_hook_trigger_error is the name of the hook, the second parameter weplugins_modify_deprecated_hook_trigger_error_defaults is the name of the function which needs to be called, the third parameter is the priority of calling the hook if the same hook is used multiple times, and the last parameter is the number of arguments (if any) to be passed in the registered function.

Sometimes, you have to remove a registered hook so you can use remove_filter to remove deprecated_hook_trigger_error filter.

Parameters

Below the 1 parameter is required to use this hook.

• $trigger: (bool) Whether to trigger deprecated hook errors. Requires WP_DEBUG to be defined true.

Live Example 1

Below is an example of how you can use this hook.

    function weplugins_modify_deprecated_hook_trigger_error_defaults($trigger) { 
        // Update the $trigger variable according to your website requirements and return this variable.
        // You can modify the $trigger variable conditionally too if you want.
        return $trigger; 
    }
    // add the filter
    add_filter( "deprecated_hook_trigger_error", "weplugins_modify_deprecated_hook_trigger_error_defaults", 10, 1 );
    

Live Example 2

To remove a hook callback, use the example below.

    remove_filter( "deprecated_hook_trigger_error", "weplugins_modify_deprecated_hook_trigger_error_defaults", 10, 1 );
    

Please make sure to provide the same callback function name, priority, and number of arguments while removing the hook callback.

Live Example 3

Here’s a simple use case where we modify the $trigger variable based on a specific condition.

    function weplugins_modify_deprecated_hook_trigger_error_conditionally($trigger) {
        if (condition) {
            $trigger = false; // Example condition to change trigger value
        }
        return $trigger;
    }
    add_filter( "deprecated_hook_trigger_error", "weplugins_modify_deprecated_hook_trigger_error_conditionally", 15, 1 );
    

Contact Us

If you’re having any trouble using this hook, please contact us and we’d be happy to assist you with any customizations you need.