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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 23 | <channel> |
| 24 | <title><?php bloginfo_rss('name'); wp_title_rss(); ?></title> |
| 25 | <atom:link href="<?php self_link(); ?>" rel="self" type="application/rss+xml" /> |
| 26 | <link><?php bloginfo_rss('url') ?></link> |
| 27 | <description><?php bloginfo_rss("description") ?></description> |
| 28 | <lastBuildDate><?php echo mysql2date('D, d M Y H:i:s +0000', get_lastpostmodified('GMT'), false); ?></lastBuildDate> |
| 29 | <language><?php bloginfo_rss( 'language' ); ?></language> |
| 30 | <sy:updatePeriod><?php echo apply_filters( 'rss_update_period', 'hourly' ); ?></sy:updatePeriod> |
| 31 | <sy:updateFrequency><?php echo apply_filters( 'rss_update_frequency', '1' ); ?></sy:updateFrequency> |
| 32 | <?php do_action('rss2_head'); ?> |
| 33 | <?php while( have_posts()) : the_post(); ?> |
| 34 | <item> |
| 35 | <title><?php the_title_rss() ?></title> |
| 36 | <link><?php the_permalink_rss() ?></link> |
| 37 | <comments><?php comments_link_feed(); ?></comments> |
| 38 | <pubDate><?php echo mysql2date('D, d M Y H:i:s +0000', get_post_time('Y-m-d H:i:s', true), false); ?></pubDate> |
| 39 | <dc:creator><?php the_author() ?></dc:creator> |
| 40 | <?php the_category_rss('rss2') ?> |
| 41 | |