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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 698 | |
| 699 | // Always clears the hook in case the post status bounced from future to draft. |
| 700 | wp_clear_scheduled_hook('publish_future_post', $post_ID); |
| 701 | |
| 702 | // Schedule publication. |
| 703 | if ( 'future' == $post_status ) |
| 704 | wp_schedule_single_event(strtotime($post_date_gmt. ' GMT'), 'publish_future_post', array($post_ID)); |
| 705 | |
| 706 | do_action('save_post', $post_ID); |
| 707 | do_action('wp_insert_post', $post_ID); |
| 708 | |
| 709 | return $post_ID; |
| 710 | } |
| 711 | |
| 712 | function wp_update_post($postarr = array()) { |
| 713 | global $wpdb; |
| 714 | |
| 715 | if ( is_object($postarr) ) |
| 716 | $postarr = get_object_vars($postarr); |