Below is the code to deactivate WordPress Heartbeat API.
| <?php | |
| //* Deactivate WordPress Heartbeart API | |
| function stop_heartbeat() { | |
| wp_deregister_script('heartbeat'); | |
| } | |
| add_action('init', 'stop_heartbeat', 1); |
Alternatively, if you don’t want to deactivate WordPress Heartbeat API but prefer to limit it, then you can download and install Heartbeat Control from the WordPress Plugin Repository.