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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 |
|---|---|
| 4577 | * |
| 4578 | * @param int $post_id The ID in the database table of the post being published |
| 4579 | */ |
| 4580 | function _publish_post_hook($post_id) { |
| 4581 | global $wpdb; |
| 4582 | |
| 4583 | if ( defined('XMLRPC_REQUEST') ) |
| 4584 | do_action('xmlrpc_publish_post', $post_id); |
| 4585 | if ( defined('APP_REQUEST') ) |
| 4586 | do_action('app_publish_post', $post_id); |
| 4587 | |
| 4588 | if ( defined('WP_IMPORTING') ) |
| 4589 | return; |
| 4590 | |
| 4591 | if ( get_option('default_pingback_flag') ) |
| 4592 | add_post_meta( $post_id, '_pingme', '1' ); |
| 4593 | add_post_meta( $post_id, '_encloseme', '1' ); |
| 4594 | |
| 4595 | wp_schedule_single_event(time(), 'do_pings'); |