What is WordPress Hook: expiration_of_site_transient_{$transient}
The expiration_of_site_transient_{$transient} hook in WordPress is used to perform an action when a site transient expires. Site transients are similar to regular transients, but they are network-wide rather than site-specific. This hook allows developers to execute custom code when a specific site transient expires.
Understanding the Hook: expiration_of_site_transient_{$transient}
The expiration_of_site_transient_{$transient} hook is located within the wp-includes/option.php file in WordPress. It is called by the delete_site_transient() function when a site transient expires. Developers can add their own custom functions to this hook using add_action() in their theme’s functions.php file or a custom plugin.
Hook Parameters (if applicable): expiration_of_site_transient_{$transient}
The expiration_of_site_transient_{$transient} hook does not accept any specific parameters. It is simply triggered when a site transient expires, allowing developers to run custom code at that specific moment.
Hook Doesn’t Work: expiration_of_site_transient_{$transient}
If the expiration_of_site_transient_{$transient} hook doesn’t seem to be working, it could be due to a few reasons. Firstly, ensure that the site transient is actually expiring by checking the code that sets the transient and its expiration time. Additionally, check for any conflicts with other plugins or themes that may be interfering with the hook’s execution.
Best Practices & Usage Notes (if applicable): expiration_of_site_transient_{$transient}
When using the expiration_of_site_transient_{$transient} hook, it’s important to keep in mind that site transients are network-wide, so any actions performed within the hook will affect all sites within the WordPress network. It’s best practice to use this hook sparingly and only for essential network-wide actions to avoid unnecessary performance impacts.
Usage Example: expiration_of_site_transient_{$transient}
“`php
function custom_site_transient_expired_action( $transient_name ) {
// Perform custom actions when a specific site transient expires
if ( $transient_name === ‘example_transient’ ) {
// Custom code here
}
}
add_action( ‘expiration_of_site_transient_example_transient’, ‘custom_site_transient_expired_action’ );
“`