Detect if Cron is Running

Yes, wp_doing_cron will return true if the current request is a WP Cron request, or if it’s triggered from WP CLI https://developer.wordpress.org/reference/functions/wp_doing_cron/

Trigger background job using AJAX

I don’t think you need to worry about this running flag or unscheduling. Since you are scheduling a one-time job that will run immediately there’s no reason to unschedule it. You just need to check if a job with that name is scheduled or not and if it is (even if it is running at … Read more

Error trying to publish immediately. Post status = future (Missed schedule error)

So the issue in this case was that PHP wasn’t displaying correct UTC Time. Thanks to @TomJNowell for pointing me in the right way. It seems to be a bug/error in some Plesk installation: https://talk.plesk.com/threads/utc-time-issue-plesk-php-7-3-7-4-on-centos7.356169/ To solve the issue we have replaced the UTC file usr/share/zoneinfo/UTC with another copy from another server. After that, UTC … Read more

How to Better Control WordPress Cron Jobs?

To disable WordPress Cron Jobs, place this in wp-config.php: define(‘DISABLE_WP_CRON’, true); To schedule a cron job in Linux with cPanel for example… This is the command you might run: wget -q -O – http://www.your-domain.org/wp-cron.php?doing_wp_cron >/dev/null 2>&1 The end of the above command just suppresses any output. Just pick the interval of your choice for setting … Read more

wp_schedule_event run in background or not?

It depends. The initial page load trigger should not but performance may degrade as visitors browse your site until the Cron job is finished. Is the scheduled event you plan on using PHP or DB intensive? How often will it run? Here’s how it works The scheduled event (aka Cron job) will be initialized once … Read more

debugging wp_cron jobs with XDebug in Eclipse

I just found the answer to my question over on stackoverflow…and thought I’d copy the answer over here for future reference since WP folks are probably more likely to look here. When WP_Cron fires a scheduled job it does so via a call to wp_remote_post(). The trick in that answer is to hook into cron_request … Read more

Execute code at the end of each quarter of year

You can specify when the first execution will be performed using the first parameter of the wp_schedule_event function. So, according to your code, the first execution will be immediately and the following one will be in 7,884,000 seconds (which is around 91.25 days). I do not recommend this approach because the WP cron scheduled periods … Read more

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