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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
710      $post = $wpdb->get_row("SELECT * FROM $wpdb->posts WHERE ID = $post_id");
711      $to_ping = get_to_ping($post_id);
712      $pinged  = get_pung($post_id);
713      if ( empty($to_ping) ) {
714           $wpdb->query("UPDATE $wpdb->posts SET to_ping = '' WHERE ID = '$post_id'");
715           return;
716      }
717      
718      if (empty($post->post_excerpt))
719           $excerpt = apply_filters('the_content', $post->post_content);
720      else
721           $excerpt = apply_filters('the_excerpt', $post->post_excerpt);
722      $excerpt = str_replace(']]>', ']]>', $excerpt);
723      $excerpt = strip_tags($excerpt);
724      if ( function_exists('mb_strcut') ) // For international trackbacks
725          $excerpt = mb_strcut($excerpt, 0, 252, get_settings('blog_charset')) . '...';
726      else
727           $excerpt = substr($excerpt, 0, 252) . '...';
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