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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 |
|---|---|
| 701 | /** |
| 702 | * Filters the returned comment ID. |
| 703 | * |
| 704 | * @since 1.5.0 |
| 705 | * @since 4.1.0 The `$comment` parameter was added. |
| 706 | * |
| 707 | * @param string $comment_id The current comment ID as a numeric string. |
| 708 | * @param WP_Comment $comment The comment object. |
| 709 | */ |
| 710 | return apply_filters( 'get_comment_ID', $comment_id, $comment ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.NotLowercase |
| 711 | } |
| 712 | |
| 713 | /** |
| 714 | * Displays the comment ID of the current comment. |
| 715 | * |
| 716 | * @since 0.71 |
| 717 | */ |
| 718 | function comment_ID() { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid |
| 719 | echo get_comment_ID(); |