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Understanding Source Code

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

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
1699      $post = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->posts WHERE ID = %d", $post_id) );
1700      $to_ping = get_to_ping($post_id);
1701      $pinged  = get_pung($post_id);
1702      if ( empty($to_ping) ) {
1703           $wpdb->update($wpdb->posts, array('to_ping' => ''), array('ID' => $post_id) );
1704           return;
1705      }
1706
1707      if ( empty($post->post_excerpt) )
1708           $excerpt = apply_filters('the_content', $post->post_content);
1709      else
1710           $excerpt = apply_filters('the_excerpt', $post->post_excerpt);
1711      $excerpt = str_replace(']]>', ']]>', $excerpt);
1712      $excerpt = wp_html_excerpt($excerpt, 252) . '...';
1713
1714      $post_title = apply_filters('the_title', $post->post_title, $post->ID);
1715      $post_title = strip_tags($post_title);
1716
1717      if ( $to_ping ) {