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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 |
|---|---|
| 41 | printf( ent2ncr( __( 'Comments for %s' ) ), get_bloginfo_rss( 'name' ) . get_wp_title_rss() ); |
| 42 | ?></title> |
| 43 | <atom:link href="<?php self_link(); ?>" rel="self" type="application/rss+xml" /> |
| 44 | <link><?php (is_single()) ? the_permalink_rss() : bloginfo_rss("url") ?></link> |
| 45 | <description><?php bloginfo_rss("description") ?></description> |
| 46 | <lastBuildDate><?php echo mysql2date('r', get_lastcommentmodified('GMT')); ?></lastBuildDate> |
| 47 | <?php /** This filter is documented in wp-includes/feed-rss2.php */ ?> |
| 48 | <sy:updatePeriod><?php echo apply_filters( 'rss_update_period', 'hourly' ); ?></sy:updatePeriod> |
| 49 | <?php /** This filter is documented in wp-includes/feed-rss2.php */ ?> |
| 50 | <sy:updateFrequency><?php echo apply_filters( 'rss_update_frequency', '1' ); ?></sy:updateFrequency> |
| 51 | <?php |
| 52 | /** |
| 53 | * Fires at the end of the RSS2 comment feed header. |
| 54 | * |
| 55 | * @since 2.3.0 |
| 56 | */ |
| 57 | do_action( 'commentsrss2_head' ); |
| 58 | |
| 59 | if ( have_comments() ) : while ( have_comments() ) : the_comment(); |