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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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 4238 | if ( defined('APP_REQUEST') ) |
| 4239 | do_action('app_publish_post', $post_id); |
| 4240 | |
| 4241 | if ( defined('WP_IMPORTING') ) |
| 4242 | return; |
| 4243 | |
| 4244 | $data = array( 'post_id' => $post_id, 'meta_value' => '1' ); |
| 4245 | if ( get_option('default_pingback_flag') ) { |
| 4246 | $wpdb->insert( $wpdb->postmeta, $data + array( 'meta_key' => '_pingme' ) ); |
| 4247 | do_action( 'added_postmeta', $wpdb->insert_id, $post_id, '_pingme', 1 ); |
| 4248 | } |
| 4249 | $wpdb->insert( $wpdb->postmeta, $data + array( 'meta_key' => '_encloseme' ) ); |
| 4250 | do_action( 'added_postmeta', $wpdb->insert_id, $post_id, '_encloseme', 1 ); |
| 4251 | |
| 4252 | wp_schedule_single_event(time(), 'do_pings'); |
| 4253 | } |
| 4254 | |
| 4255 | /** |
| 4256 | * Hook used to prevent page/post cache and rewrite rules from staying dirty. |
| 4257 | * |
| 4258 | * Does two things. If the post is a page and has a template then it will |
| 4259 | * update/add that template to the meta. For both pages and posts, it will clean |