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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 |
|---|---|
| 18 | xmlns:thr="http://purl.org/syndication/thread/1.0" |
| 19 | xml:lang="<?php bloginfo_rss( 'language' ); ?>" |
| 20 | xml:base="<?php bloginfo_rss('url') ?>/wp-atom.php" |
| 21 | <?php |
| 22 | /** |
| 23 | * Fires at end of the Atom feed root to add namespaces. |
| 24 | * |
| 25 | * @since 2.0.0 |
| 26 | */ |
| 27 | do_action( 'atom_ns' ); |
| 28 | ?> |
| 29 | > |
| 30 | <title type="text"><?php wp_title_rss(); ?></title> |
| 31 | <subtitle type="text"><?php bloginfo_rss("description") ?></subtitle> |
| 32 | |
| 33 | <updated><?php |
| 34 | $date = get_lastpostmodified( 'GMT' ); |
| 35 | echo $date ? mysql2date( 'Y-m-d\TH:i:s\Z', $date ) : date( 'Y-m-d\TH:i:s\Z' ); |
| 36 | ?></updated> |