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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 |
|---|---|
| 668 | /** |
| 669 | * Filters the returned comment ID. |
| 670 | * |
| 671 | * @since 1.5.0 |
| 672 | * @since 4.1.0 The `$comment_ID` parameter was added. |
| 673 | * |
| 674 | * @param int $comment_ID The current comment ID. |
| 675 | * @param WP_Comment $comment The comment object. |
| 676 | */ |
| 677 | return apply_filters( 'get_comment_ID', $comment->comment_ID, $comment ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.NotLowercase |
| 678 | } |
| 679 | |
| 680 | /** |
| 681 | * Displays the comment ID of the current comment. |
| 682 | * |
| 683 | * @since 0.71 |
| 684 | */ |
| 685 | function comment_ID() { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid |
| 686 | echo get_comment_ID(); |