Sends an email notification if new updates are available for plugins and theme

gistfile1.txt

This code defines a function send_update_notification in a WordPress environment. 
It checks for updates to plugins and themes, and sends an email notification if new updates are available. 
For plugins, it uses get_site_transient('update_plugins') to check for plugin updates, and for themes, 
it uses get_site_transient('update_themes'). If updates are found and have not been previously notified 
(based on options stored in the database), it sends an email to a specified address with details about 
the available updates. The function is hooked to the admin_init action, so it runs during the initialization of 
the WordPress admin panel.





function send_update_notification() {
    $to = 'YOUR EMAIL';
    $subject = 'New WordPress update available';
    $headers = 'YOUR SITE NAME <YOUR EMAIL>' . "\r\n" . 'Reply-To: [email protected]' . "\r\n";
    
    // Check for plugin updates
    $plugin_updates = get_site_transient( 'update_plugins' );
    if ( ! empty( $plugin_updates->response ) ) {
        $notified_plugins = get_option( 'notified_plugin_updates', array() );
        foreach ( $plugin_updates->response as $plugin ) {
            if ( ! in_array( $plugin->slug, $notified_plugins ) ) {
                $message = 'A new update is available for the ' . $plugin->slug . ' plugin. Please log in to your dashboard to update it.';
                wp_mail( $to, $subject, $message, $headers );
                $notified_plugins[] = $plugin->slug;
            }
        }
        update_option( 'notified_plugin_updates', $notified_plugins );
    }
    
    // Check for theme updates
    $theme_updates = get_site_transient( 'update_themes' );
    if ( ! empty( $theme_updates->response ) ) {
        $notified_themes = get_option( 'notified_theme_updates', array() );
        foreach ( $theme_updates->response as $theme ) {
            if ( ! in_array( $theme->slug, $notified_themes ) ) {
                $message = 'A new update is available for the ' . $theme->slug . ' theme. Please log in to your dashboard to update it.';
                wp_mail( $to, $subject, $message, $headers );
                $notified_themes[] = $theme->slug;
            }
        }
        update_option( 'notified_theme_updates', $notified_themes );
    }
}
add_action( 'admin_init', 'send_update_notification' );