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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 |
|---|---|
| 1891 | /** |
| 1892 | * Filters the returned comment id fields. |
| 1893 | * |
| 1894 | * @since 3.0.0 |
| 1895 | * |
| 1896 | * @param string $result The HTML-formatted hidden id field comment elements. |
| 1897 | * @param int $id The post ID. |
| 1898 | * @param int $replytoid The id of the comment being replied to. |
| 1899 | */ |
| 1900 | return apply_filters( 'comment_id_fields', $result, $id, $replytoid ); |
| 1901 | } |
| 1902 | |
| 1903 | /** |
| 1904 | * Output hidden input HTML for replying to comments. |
| 1905 | * |
| 1906 | * @since 2.7.0 |
| 1907 | * |
| 1908 | * @param int $id Optional. Post ID. Default current post ID. |
| 1909 | */ |