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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 |
|---|---|
| 603 | /** |
| 604 | * Filter the returned comment ID. |
| 605 | * |
| 606 | * @since 1.5.0 |
| 607 | * @since 4.1.0 The `$comment_ID` parameter was added. |
| 608 | * |
| 609 | * @param int $comment_ID The current comment ID. |
| 610 | * @param object $comment The comment object. |
| 611 | */ |
| 612 | return apply_filters( 'get_comment_ID', $comment->comment_ID, $comment ); |
| 613 | } |
| 614 | |
| 615 | /** |
| 616 | * Display the comment id of the current comment. |
| 617 | * |
| 618 | * @since 0.71 |
| 619 | */ |
| 620 | function comment_ID() { |
| 621 | echo get_comment_ID(); |