wp_schedule_single_event not working

Question

I don't know why my scheduled cron events not working anymore, it used to before with the same code. I wrote a plugin that updates a CRM with the order note, if the communication fails I setup a scheduled event for the same function to run with the same arguments for 1 minute in the future with this piece of code:
wp_schedule_single_event( time() + MINUTE_IN_SECONDS, 'woo_kala_order_note_added', array( $comment_id, $kala_order_id ) );
I tried to place woo_kala_order_note_added function both in the plugin and in the theme and error log the arguments but my debug.log is still empty.

Here's a screenshot of the Cron Manager plugin showing the schedule that is registered but the function won't actually fire.

Any idea why this might happen?

Thanks

Answer 1

You just need to hook your function to the hook you named in the second parameter of wp_schedule_single_event function.

See the following example:

add_action('woo_kala_order_note_added','woo_kala_order_note', 10, 2);
function woo_kala_order_note( $comment_id, $kala_order_id ){
    // do whatever your logic needs. 
}

Answer 2

Make sure the second argument in wp_schedule_single_event( $timestamp, $hook, $args, $wp_error ) is referring to a "hook name" and not a function name.

function custom_event_callback()
{
    error_log( "Hello world!" );
}
add_action( "mycustom_event_hook", "custom_event_callback" );

function schedule_custom_events()
{
   wp_schedule_single_event(
      time() + MINUTE_IN_SECONDS,
      "mycustom_event_hook",
      [ $comment_id, $kala_order_id ]
   );
}
add_action( "init", "schedule_custom_events" );

Hope this helps.