- <lastBuildDate><?php echo mysql2date('r', get_lastcommentmodified('GMT')); ?></lastBuildDate>
- <?php /** This filter is documented in wp-includes/feed-rss2.php */ ?>
- <sy:updatePeriod><?php echo apply_filters( 'rss_update_period', 'hourly' ); ?></sy:updatePeriod>
- <?php /** This filter is documented in wp-includes/feed-rss2.php */ ?>
- <sy:updateFrequency><?php echo apply_filters( 'rss_update_frequency', '1' ); ?></sy:updateFrequency>
+ <lastBuildDate><?php
+ $date = get_lastcommentmodified( 'GMT' );
+ echo $date ? mysql2date( 'r', $date ) : date( 'r' );
+ ?></lastBuildDate>
+ <sy:updatePeriod><?php
+ /** This filter is documented in wp-includes/feed-rss2.php */
+ echo apply_filters( 'rss_update_period', 'hourly' );
+ ?></sy:updatePeriod>
+ <sy:updateFrequency><?php
+ /** This filter is documented in wp-includes/feed-rss2.php */
+ echo apply_filters( 'rss_update_frequency', '1' );
+ ?></sy:updateFrequency>