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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 |
|---|---|
| 13 | <!-- generator="wordpress/<?php echo $wp_version ?>" --> |
| 14 | <rss version="0.92"> |
| 15 | <channel> |
| 16 | <title><?php bloginfo_rss('name') ?></title> |
| 17 | <link><?php bloginfo_rss('url') ?></link> |
| 18 | <description><?php bloginfo_rss('description') ?></description> |
| 19 | <lastBuildDate><?php echo mysql2date('D, d M Y H:i:s +0000', get_lastpostmodified('GMT'), false); ?></lastBuildDate> |
| 20 | <docs>http://backend.userland.com/rss092</docs> |
| 21 | <language><?php echo get_option('rss_language'); ?></language> |
| 22 | <?php do_action('rss_head'); ?> |
| 23 | |
| 24 | <?php while (have_posts()) : the_post(); ?> |
| 25 | <item> |
| 26 | <title><?php the_title_rss() ?></title> |
| 27 | <?php if (get_option('rss_use_excerpt')) { ?> |
| 28 | <description><![CDATA[<?php the_excerpt_rss() ?>]]></description> |
| 29 | <?php } else { // use content ?> |
| 30 | <description><?php the_content_rss('', 0, '', get_option('rss_excerpt_length')) ?></description> |
| 31 | <?php } ?> |