What is WordPress Hook: add_user_to_blog
The add_user_to_blog hook is a specific hook in WordPress that allows developers to perform actions when a user is added to a blog within a multisite network. This hook provides a way to execute custom code when a user is added to a blog, such as sending notifications, updating user metadata, or performing other related tasks.
Understanding the Hook: add_user_to_blog
The add_user_to_blog hook is located within the wp-includes/user.php file in WordPress. It is triggered when a user is added to a blog within a multisite network, allowing developers to tie custom functionality to this event.
Hook Parameters (if applicable): add_user_to_blog
The add_user_to_blog hook accepts parameters such as the user ID, the blog ID, and the role of the user within the blog. These parameters can be used within the hooked function to perform specific actions based on the user and blog context.
Hook Doesn’t Work: add_user_to_blog
If the add_user_to_blog hook doesn’t work as expected, it may be due to incorrect usage of parameters or conflicts with other plugins or themes. To troubleshoot, developers should ensure that the hooked function is properly defined and that any conditional logic within the function is accurately targeting the intended user and blog.
Best Practices & Usage Notes (if applicable): add_user_to_blog
When using the add_user_to_blog hook, it’s important to consider the potential impact on performance, especially if the hooked function involves complex operations or external API calls. Additionally, developers should be mindful of the user and blog context to avoid unintended consequences when implementing custom functionality tied to this hook.
Usage Example: add_user_to_blog
“`php
function custom_user_added_to_blog( $user_id, $blog_id, $role ) {
// Perform custom actions when a user is added to a blog
}
add_action( ‘add_user_to_blog’, ‘custom_user_added_to_blog’, 10, 3 );
“`
