This is an old question, but hopefully this helps someone facing the same issue. We can use wp_get_schedule( $hook ) to retrieve the cron schedule for the hook. Then we can use wp_get_schedules() to retrieve the supported cron recurrences. Find the correct array value and return it. /** * Retrieve Cron interval for hook. * … Read more
The _get_cron_array() function gets the ‘cron’ option out of the database. The cron option contains an array consisting of a series of unix-timestamps and action hooks. So, when the timestamp is reached, then the action hook is called. The timestamp of 1465529020 is the equivalent of June 10th, 2016, at 3:23am in UTC time. The … Read more
WP-Cron is not intended to be that precise, and should not be used if you have to have things scheduled at specific times. WP-Cron is a “best effort” scheduling mechanism, and it cannot guarantee run timing like a real cron system can. If you need precision of this nature, the only real answer is to … Read more
Looking at the file documentation inside wp-cron.php it seems it’s absolutely possible to just call $ php wp-cron.php: /** * A pseudo-CRON daemon for scheduling WordPress tasks * * WP Cron is triggered when the site receives a visit. In the scenario * where a site may not receive enough visits to execute scheduled tasks … Read more
Basically every page load looks to see if there is anything scheduled to run, so by that logic the cron is checked and can possibly run on every page load. I can only presume you want to schedule something to run every so often. If that’s the case you need to look at wp_schedule_event() Below … Read more
This is not a fix for your problem, but it might lead you in the right direction to solving the issue. I would suggest checking out this plugin to possibly help you find out what is going on: WP Cron Control It offers a quick view of cron jobs scheduled throughout your site. I recently … Read more
Add an action outside your class definition: add_action(‘my_unique_plugin_event_hook’, array($this,’hook’)); And then use this in your event: wp_schedule_event(time(), ‘daily’, ‘my_unique_plugin_event_hook’);
So your constructor is probably not being executed before the cron event is being run. If your instantiating the fb_linter class too late then your call to add_action won’t happen in time. Try using the singleton design pattern for your class and then instantiate it right after you declare it and it should work just … Read more
I think you have mismatch in how you pass arguments and how you expect it to work. You pass array of arguments to schedule and expect your hooked function to receive identical array of arguments. This is not the case. Cron events are processed by do_action_ref_array(), which in turn passes arguments via call_user_func_array(). So your … Read more
As a general principal, you shouldn’t do anything that requires an ‘add_action’ after the plugin activation hook. This is because WP loads and runs all plugins and THEN runs the new added one, and then does a re-direct. You have to set a DB option and hook into that. Here is the discussion from the … Read more