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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
2875      $to_ping = get_to_ping( $post );
2876      $pinged  = get_pung( $post );
2877      if ( empty( $to_ping ) ) {
2878           $wpdb->update( $wpdb->posts, array( 'to_ping' => '' ), array( 'ID' => $post->ID ) );
2879           return;
2880      }
2881
2882      if ( empty( $post->post_excerpt ) ) {
2883           /** This filter is documented in wp-includes/post-template.php */
2884           $excerpt = apply_filters( 'the_content', $post->post_content, $post->ID );
2885      } else {
2886           /** This filter is documented in wp-includes/post-template.php */
2887           $excerpt = apply_filters( 'the_excerpt', $post->post_excerpt );
2888      }
2889
2890      $excerpt = str_replace( ']]>', ']]>', $excerpt );
2891      $excerpt = wp_html_excerpt( $excerpt, 252, '…' );
2892
2893      /** This filter is documented in wp-includes/post-template.php */