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Source View: {$old_status}_to_{$new_status}

To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).

Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

  • Action hooks look like this: do_action( "hook_name" )
  • Filter hooks look like this: 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.

Source View

Line Code
1895  * @uses do_action() Calls '${old_status}_to_$new_status' on $post if there is a status change.
1896  * @uses do_action() Calls '${new_status}_$post->post_type' on post ID and $post.
1897  *
1898  * @param string $new_status Transition to this post status.
1899  * @param string $old_status Previous post status.
1900  * @param object $post Post data.
1901  */
1902 function wp_transition_post_status($new_status, $old_status, $post) {
1903      do_action('transition_post_status', $new_status, $old_status, $post);
1904      do_action("${old_status}_to_$new_status", $post);
1905      do_action("${new_status}_$post->post_type", $post->ID, $post);
1906 }
1907
1908 //
1909 // Trackback and ping functions
1910 //
1911
1912 /**
1913  * Add a URL to those already pung.