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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 |
|---|---|
| 231 | $month = gmdate('m', time()+(get_option('gmt_offset') * 3600)); |
| 232 | if ( !$day ) |
| 233 | $day = gmdate('j', time()+(get_option('gmt_offset') * 3600)); |
| 234 | |
| 235 | $daylink = $wp_rewrite->get_day_permastruct(); |
| 236 | if ( !empty($daylink) ) { |
| 237 | $daylink = str_replace('%year%', $year, $daylink); |
| 238 | $daylink = str_replace('%monthnum%', zeroise(intval($month), 2), $daylink); |
| 239 | $daylink = str_replace('%day%', zeroise(intval($day), 2), $daylink); |
| 240 | return apply_filters('day_link', get_option('home') . user_trailingslashit($daylink, 'day'), $year, $month, $day); |
| 241 | } else { |
| 242 | return apply_filters('day_link', get_option('home') . '/?m=' . $year . zeroise($month, 2) . zeroise($day, 2), $year, $month, $day); |
| 243 | } |
| 244 | } |
| 245 | |
| 246 | function get_feed_link($feed = '') { |
| 247 | global $wp_rewrite; |
| 248 | |
| 249 | $permalink = $wp_rewrite->get_feed_permastruct(); |
| 250 | if ( '' != $permalink ) { |
| 251 | if ( false !== strpos($feed, 'comments_') ) { |