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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 |
|---|---|
| 1415 | /** |
| 1416 | * Filter the returned comment id fields. |
| 1417 | * |
| 1418 | * @since 3.0.0 |
| 1419 | * |
| 1420 | * @param string $result The HTML-formatted hidden id field comment elements. |
| 1421 | * @param int $id The post ID. |
| 1422 | * @param int $replytoid The id of the comment being replied to. |
| 1423 | */ |
| 1424 | return apply_filters( 'comment_id_fields', $result, $id, $replytoid ); |
| 1425 | } |
| 1426 | |
| 1427 | /** |
| 1428 | * Output hidden input HTML for replying to comments. |
| 1429 | * |
| 1430 | * @since 2.7.0 |
| 1431 | * |
| 1432 | * @param int $id Optional. Post ID. Default current post ID. |
| 1433 | */ |