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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 |
---|---|
3267 | * @param object $post Object type containing the post information |
3268 | */ |
3269 | function _transition_post_status($new_status, $old_status, $post) { |
3270 | global $wpdb; |
3271 |
|
3272 | if ( $old_status != 'publish' && $new_status == 'publish' ) { |
3273 | // Reset GUID if transitioning to publish and it is empty |
3274 | if ( '' == get_the_guid($post->ID) ) |
3275 | $wpdb->update( $wpdb->posts, array( 'guid' => get_permalink( $post->ID ) ), array( 'ID' => $post->ID ) ); |
3276 | do_action('private_to_published', $post->ID); // Deprecated, use private_to_publish |
3277 | // do generic pings once per hour at most |
3278 | if ( !wp_next_scheduled('do_generic_ping') ) |
3279 | wp_schedule_single_event(time() + 3600, 'do_generic_ping'); |
3280 | } |
3281 |
|
3282 | // Always clears the hook in case the post status bounced from future to draft. |
3283 | wp_clear_scheduled_hook('publish_future_post', $post->ID); |
3284 | } |
3285 |
|