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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 |
|---|---|
| 413 | $url = user_trailingslashit($url, 'single_feed'); |
| 414 | } else { |
| 415 | $type = get_post_field('post_type', $post_id); |
| 416 | if ( 'page' == $type ) |
| 417 | $url = trailingslashit(get_option('home')) . "?feed=$feed&page_id=$post_id"; |
| 418 | else |
| 419 | $url = trailingslashit(get_option('home')) . "?feed=$feed&p=$post_id"; |
| 420 | } |
| 421 | |
| 422 | return apply_filters('post_comments_feed_link', $url); |
| 423 | } |
| 424 | |
| 425 | /** |
| 426 | * Display the comment feed link for a post. |
| 427 | * |
| 428 | * Prints out the comment feed link for a post. Link text is placed in the |
| 429 | * anchor. If no link text is specified, default text is used. If no post ID is |
| 430 | * specified, the current post is used. |
| 431 | * |