How to change category of a post automatically in WordPress?

Change category of wordpress post when date is today

• So I am using the plugin 'the future is now' on a wordpress site, the site is for event news, once an event has happened i need it to move into from the 'events' category to the 'results'. The plugin 'the future is now' takes care of displaying future posts but I cannot find anything online as to how to change the post category when the date is 1 day past. For example an event on the 11/04/2014 should change categories at 00:01 12/04/2014.

• Answer:

  You will need a couple things in order to change the category using PHP <?php $date = the_date(); $today = date("F j, Y"); if($date < $today){ $post_ID = get_the_ID(); $post_categories = array(CATEGORY_NUMBER_FOR_RESULTS); wp_set_post_categories( $post_ID, $post_categories ); } ?> You will need to place this in the while-loop you use to get the "Events" category posts. While this method should work I highly recommend NOT using it because if at any point the post_ID or post_categories messes up it can create orphan posts which will need SQL database manipulation to fix.