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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" )
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.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
4517 | * @param object $post Object type containing the post information |
4518 | */ |
4519 | function _transition_post_status($new_status, $old_status, $post) { |
4520 | global $wpdb; |
4521 |
|
4522 | if ( $old_status != 'publish' && $new_status == 'publish' ) { |
4523 | // Reset GUID if transitioning to publish and it is empty |
4524 | if ( '' == get_the_guid($post->ID) ) |
4525 | $wpdb->update( $wpdb->posts, array( 'guid' => get_permalink( $post->ID ) ), array( 'ID' => $post->ID ) ); |
4526 | do_action('private_to_published', $post->ID); // Deprecated, use private_to_publish |
4527 | } |
4528 |
|
4529 | // If published posts changed clear the lastpostmodified cache |
4530 | if ( 'publish' == $new_status || 'publish' == $old_status) { |
4531 | foreach ( array( 'server', 'gmt', 'blog' ) as $timezone ) { |
4532 | wp_cache_delete( "lastpostmodified:$timezone", 'timeinfo' ); |
4533 | wp_cache_delete( "lastpostdate:$timezone", 'timeinfo' ); |
4534 | } |
4535 | } |