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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 |
---|---|
637 | /** |
638 | * Filter the returned comment ID. |
639 | * |
640 | * @since 1.5.0 |
641 | * @since 4.1.0 The `$comment_ID` parameter was added. |
642 | * |
643 | * @param int $comment_ID The current comment ID. |
644 | * @param WP_Comment $comment The comment object. |
645 | */ |
646 | return apply_filters( 'get_comment_ID', $comment->comment_ID, $comment ); |
647 | } |
648 |
|
649 | /** |
650 | * Display the comment id of the current comment. |
651 | * |
652 | * @since 0.71 |
653 | */ |
654 | function comment_ID() { |
655 | echo get_comment_ID(); |