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I have some programming error in my wordpress plugin. When its running, then it keeps registering cron job to the wordpress. I wrote the plugin as a class:

class Cleverstart_Woofio extends WC_Integration{
    public function __construct(){
       add_action('woofio_hourly', array( $this,'woofio_create_haystack'));
       wp_schedule_event(time(), 'hourly', 'woofio_hourly');
       //other stuff not related to the question
    } 

   public function woofio_create_haystack(){
     //do quite performance heavy stuff
   }

}

$cleverstart_woofio = new Cleverstart_Woofio();

My theory is, that the new Cleverstart_Woofio(); call will always schedule new cron event, clugging my site. I need to check if the event was already scheduled and schedule it only once. However, I am clueless on how to achieve this.

Thanks for help

2

Have you ever heard of Rubber Ducking?

The official documentation has an answer:

if ( ! wp_next_scheduled( 'woofio_hourly' ) ) {
    wp_schedule_event( time(), 'hourly', 'woofio_hourly' );
}

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