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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 |
|---|---|
| 394 | $month = gmdate('m', current_time('timestamp')); |
| 395 | if ( !$day ) |
| 396 | $day = gmdate('j', current_time('timestamp')); |
| 397 | |
| 398 | $daylink = $wp_rewrite->get_day_permastruct(); |
| 399 | if ( !empty($daylink) ) { |
| 400 | $daylink = str_replace('%year%', $year, $daylink); |
| 401 | $daylink = str_replace('%monthnum%', zeroise(intval($month), 2), $daylink); |
| 402 | $daylink = str_replace('%day%', zeroise(intval($day), 2), $daylink); |
| 403 | return apply_filters('day_link', home_url( user_trailingslashit($daylink, 'day') ), $year, $month, $day); |
| 404 | } else { |
| 405 | return apply_filters('day_link', home_url( '?m=' . $year . zeroise($month, 2) . zeroise($day, 2) ), $year, $month, $day); |
| 406 | } |
| 407 | } |
| 408 | |
| 409 | /** |
| 410 | * Display the permalink for the feed type. |
| 411 | * |
| 412 | * @since 3.0.0 |
| 413 | * |
| 414 | * @param string $anchor The link's anchor text. |