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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 |
|---|---|
| 656 | /** |
| 657 | * Filters the returned comment ID. |
| 658 | * |
| 659 | * @since 1.5.0 |
| 660 | * @since 4.1.0 The `$comment_ID` parameter was added. |
| 661 | * |
| 662 | * @param int $comment_ID The current comment ID. |
| 663 | * @param WP_Comment $comment The comment object. |
| 664 | */ |
| 665 | return apply_filters( 'get_comment_ID', $comment->comment_ID, $comment ); |
| 666 | } |
| 667 | |
| 668 | /** |
| 669 | * Display the comment id of the current comment. |
| 670 | * |
| 671 | * @since 0.71 |
| 672 | */ |
| 673 | function comment_ID() { |
| 674 | echo get_comment_ID(); |