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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 |
|---|---|
| 687 | "); |
| 688 | wp_schedule_single_event(time(), 'do_pings'); |
| 689 | } |
| 690 | } else if ($post_type == 'page') { |
| 691 | if ( !empty($page_template) ) |
| 692 | if ( ! update_post_meta($post_ID, '_wp_page_template', $page_template)) |
| 693 | add_post_meta($post_ID, '_wp_page_template', $page_template, true); |
| 694 | |
| 695 | if ( $post_status == 'publish' ) |
| 696 | do_action('publish_page', $post_ID); |
| 697 | } |
| 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 | |