Check if checkbox is marked on publish/update post

Working code: add_action( ‘acf/save_post’, ‘fritlaeg_artikel_3m’ ); function fritlaeg_artikel_3m( $post_id ) { if( get_post_meta( $post_id, ‘fritlaeg_artikel_i_3_maneder’, true ) ) { // Getting a UNIX Timestamp $timestamp = time(); // Using WordPress Time Constants // https://codex.wordpress.org/Easier_Expression_of_Time_Constants $timestamp_after_hour = $timestamp + 0.5 * MINUTE_IN_SECONDS; // Define remaining parameters $args = array( $post_id ); $hook = ‘fritlaegning_clear_meta_data’; // Get … Read more