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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 |
|---|---|
| 19 | <title type="text"><?php bloginfo_rss('name'); wp_title_rss(); ?></title> |
| 20 | <subtitle type="text"><?php bloginfo_rss("description") ?></subtitle> |
| 21 | |
| 22 | <updated><?php echo mysql2date('Y-m-d\TH:i:s\Z', get_lastpostmodified('GMT'), false); ?></updated> |
| 23 | |
| 24 | <link rel="alternate" type="text/html" href="<?php bloginfo_rss('url') ?>" /> |
| 25 | <id><?php bloginfo('atom_url'); ?></id> |
| 26 | <link rel="self" type="application/atom+xml" href="<?php self_link(); ?>" /> |
| 27 | |
| 28 | <?php do_action('atom_head'); ?> |
| 29 | <?php while (have_posts()) : the_post(); ?> |
| 30 | <entry> |
| 31 | <author> |
| 32 | <name><?php the_author() ?></name> |
| 33 | <?php $author_url = get_the_author_meta('url'); if ( !empty($author_url) ) : ?> |
| 34 | <uri><?php the_author_meta('url')?></uri> |
| 35 | <?php endif; |
| 36 | do_action('atom_author'); ?> |
| 37 | </author> |