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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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 214 | $month = gmdate('m', time()+(get_option('gmt_offset') * 3600)); |
| 215 | if ( !$day ) |
| 216 | $day = gmdate('j', time()+(get_option('gmt_offset') * 3600)); |
| 217 | |
| 218 | $daylink = $wp_rewrite->get_day_permastruct(); |
| 219 | if ( !empty($daylink) ) { |
| 220 | $daylink = str_replace('%year%', $year, $daylink); |
| 221 | $daylink = str_replace('%monthnum%', zeroise(intval($month), 2), $daylink); |
| 222 | $daylink = str_replace('%day%', zeroise(intval($day), 2), $daylink); |
| 223 | return apply_filters('day_link', get_option('home') . user_trailingslashit($daylink, 'day'), $year, $month, $day); |
| 224 | } else { |
| 225 | return apply_filters('day_link', get_option('home') . '/?m=' . $year . zeroise($month, 2) . zeroise($day, 2), $year, $month, $day); |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | function get_feed_link($feed='rss2') { |
| 230 | global $wp_rewrite; |
| 231 | $do_perma = 0; |
| 232 | $feed_url = get_option('siteurl'); |
| 233 | $comment_feed_url = $feed_url; |
| 234 | |