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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 |
|---|---|
| 17 | <lastBuildDate><?php echo get_feed_build_date( 'D, d M Y H:i:s +0000' ); ?></lastBuildDate> |
| 18 | <docs>http://backend.userland.com/rss092</docs> |
| 19 | <language><?php bloginfo_rss( 'language' ); ?></language> |
| 20 | <?php |
| 21 | /** |
| 22 | * Fires at the end of the RSS Feed Header. |
| 23 | * |
| 24 | * @since 2.0.0 |
| 25 | */ |
| 26 | do_action( 'rss_head' ); |
| 27 | ?> |
| 28 | |
| 29 | <?php |
| 30 | while ( have_posts() ) : |
| 31 | the_post(); |
| 32 | ?> |
| 33 | <item> |
| 34 | <title><?php the_title_rss(); ?></title> |
| 35 | <description><![CDATA[<?php the_excerpt_rss(); ?>]]></description> |