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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
1326      $post = $wpdb->get_row( $wpdb->prepare("SELECT * FROM $wpdb->posts WHERE ID = %d", $post_id) );
1327      $to_ping = get_to_ping($post_id);
1328      $pinged  = get_pung($post_id);
1329      if ( empty($to_ping) ) {
1330           $wpdb->query( $wpdb->prepare("UPDATE $wpdb->posts SET to_ping = '' WHERE ID = %d", $post_id) );
1331           return;
1332      }
1333
1334      if ( empty($post->post_excerpt) )
1335           $excerpt = apply_filters('the_content', $post->post_content);
1336      else
1337           $excerpt = apply_filters('the_excerpt', $post->post_excerpt);
1338      $excerpt = str_replace(']]>', ']]>', $excerpt);
1339      $excerpt = wp_html_excerpt($excerpt, 252) . '...';
1340
1341      $post_title = apply_filters('the_title', $post->post_title);
1342      $post_title = strip_tags($post_title);
1343
1344      if ( $to_ping ) {