- <pubDate><?php echo mysql2date('D, d M Y H:i:s +0000', get_lastpostmodified('GMT'), false); ?></pubDate>
- <?php the_generator( 'rss2' ); ?>
- <language><?php echo get_option('rss_language'); ?></language>
- <?php do_action('rss2_head'); ?>
- <?php while( have_posts()) : the_post(); ?>
+ <lastBuildDate><?php echo mysql2date('D, d M Y H:i:s +0000', get_lastpostmodified('GMT'), false); ?></lastBuildDate>
+ <language><?php bloginfo_rss( 'language' ); ?></language>
+ <sy:updatePeriod><?php
+ $duration = 'hourly';
+
+ /**
+ * Filter how often to update the RSS feed.
+ *
+ * @since 2.1.0
+ *
+ * @param string $duration The update period. Accepts 'hourly', 'daily', 'weekly', 'monthly',
+ * 'yearly'. Default 'hourly'.
+ */
+ echo apply_filters( 'rss_update_period', $duration );
+ ?></sy:updatePeriod>
+ <sy:updateFrequency><?php
+ $frequency = '1';
+
+ /**
+ * Filter the RSS update frequency.
+ *
+ * @since 2.1.0
+ *
+ * @param string $frequency An integer passed as a string representing the frequency
+ * of RSS updates within the update period. Default '1'.
+ */
+ echo apply_filters( 'rss_update_frequency', $frequency );
+ ?></sy:updateFrequency>
+ <?php
+ /**
+ * Fires at the end of the RSS2 Feed Header.
+ *
+ * @since 2.0.0
+ */
+ do_action( 'rss2_head');
+
+ while( have_posts()) : the_post();
+ ?>