How to use register_setting action in WordPress

register_setting action

Fires immediately before the setting is registered but after its filters are in place.

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

We at WePlugins 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 execute_on_register_setting_event which takes 3 parameters and we registered using add_action. The first parameter register_setting is the name of the hook, the second parameter execute_on_register_setting_event 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_action to remove register_setting action.

Parameters

Below are the 3 parameters required to use this hook.

• $option_group : (string) Setting group.
• $option_name : (string) Setting name.
• $args : (array) Array of setting registration arguments.

Live Example

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

    function weplugins_execute_on_register_setting_event($option_group, $option_name, $args){
       //You can write code here to be executed when this action occurs in WordPress. Use the parameters received in the function arguments & implement the required additional custom functionality according to your website requirements.
    }
    // add the action
    add_action( "register_setting", "weplugins_execute_on_register_setting_event" , 10, 3);
    

Example 1: Adding Custom Settings

In this example, we are adding custom settings to a plugin.

    function weplugins_execute_on_register_setting_event($option_group, $option_name, $args){
        if($option_group === 'my_plugin_options'){
            // Custom logic for my_plugin_options group
        }
    }
    add_action( "register_setting", "weplugins_execute_on_register_setting_event" , 10, 3);
    

Example 2: Validating Settings

This example shows how to validate settings when they are registered.

    function weplugins_execute_on_register_setting_event($option_group, $option_name, $args){
        if($option_name === 'my_plugin_setting'){
            // Validate the setting value
        }
    }
    add_action( "register_setting", "weplugins_execute_on_register_setting_event" , 10, 3);
    

Example 3: Removing a Registered Hook

To remove a hook callback, use the example below.

    remove_action( "register_setting", "weplugins_execute_on_register_setting_event", 10, 3 );
    

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

Contact Us

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