Cron Event Generator

WordPress Cron Event Generator — WP-Cron Explained

WP-Cron is WordPress's built-in pseudo-cron system. Unlike a true server cron job, WP-Cron events only fire when someone visits your site — WordPress checks if any scheduled events are due and runs them during that page load. This tool generates the complete PHP code needed to register, schedule, run, and clean up a recurring WP-Cron event.

How the Generated Code Works

• Custom interval filter (optional) — WordPress ships with hourly, twicedaily, and daily. To use a custom interval, register it via the cron_schedules filter before scheduling the event.
• Activation hook — Uses register_activation_hook() to schedule the event once when the plugin is activated. The wp_next_scheduled() check prevents duplicate scheduling if the plugin is deactivated and reactivated.
• Callback function — The placeholder function that runs on each scheduled tick. Add your background processing logic here.
• Deactivation hook — Clears the scheduled event when the plugin is deactivated. Failing to do this leaves orphaned cron entries in the database.

WP-Cron Limitations and Alternatives

• WP-Cron events only run when a page is visited. On low-traffic sites, events may fire late or not at all.
• For reliable scheduling on production sites, disable WP-Cron (define( 'DISABLE_WP_CRON', true ); in wp-config.php) and add a real server cron job that hits /wp-cron.php?doing_wp_cron on your desired interval.
• Avoid scheduling tasks that take more than a few seconds — they run in-process during a page load and can cause timeouts.
• Use the WP Crontrol plugin to inspect and manually trigger scheduled events during development.

Registering as a Plugin vs Theme

Always register WP-Cron events from a plugin, not a theme. Themes do not have activation/deactivation hooks, which means your scheduled event will never be cleanly deregistered and could run indefinitely even after the theme is changed.