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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 |
|---|---|
| 1565 | $respond_link = get_permalink() . '#respond'; |
| 1566 | /** |
| 1567 | * Filters the respond link when a post has no comments. |
| 1568 | * |
| 1569 | * @since 4.4.0 |
| 1570 | * |
| 1571 | * @param string $respond_link The default response link. |
| 1572 | * @param integer $id The post ID. |
| 1573 | */ |
| 1574 | echo apply_filters( 'respond_link', $respond_link, $id ); |
| 1575 | } else { |
| 1576 | comments_link(); |
| 1577 | } |
| 1578 | echo '"'; |
| 1579 | |
| 1580 | if ( ! empty( $css_class ) ) { |
| 1581 | echo ' class="' . $css_class . '" '; |
| 1582 | } |
| 1583 | |