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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 |
|---|---|
| 510 | * @param int $post_id Optional post ID. Default to current post. |
| 511 | * @param string $feed Optional. Feed format. |
| 512 | * @return string Link to the comment feed for the current post. |
| 513 | */ |
| 514 | function post_comments_feed_link( $link_text = '', $post_id = '', $feed = '' ) { |
| 515 | $url = get_post_comments_feed_link($post_id, $feed); |
| 516 | if ( empty($link_text) ) |
| 517 | $link_text = __('Comments Feed'); |
| 518 | |
| 519 | echo apply_filters( 'post_comments_feed_link_html', "<a href='$url'>$link_text</a>", $post_id, $feed ); |
| 520 | } |
| 521 | |
| 522 | /** |
| 523 | * Retrieve the feed link for a given author. |
| 524 | * |
| 525 | * Returns a link to the feed for all posts by a given author. A specific feed |
| 526 | * can be requested or left blank to get the default feed. |
| 527 | * |
| 528 | * @package WordPress |