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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 |
|---|---|
| 720 | /** |
| 721 | * Filters the returned comment ID. |
| 722 | * |
| 723 | * @since 1.5.0 |
| 724 | * @since 4.1.0 The `$comment` parameter was added. |
| 725 | * |
| 726 | * @param string $comment_id The current comment ID as a numeric string. |
| 727 | * @param WP_Comment $comment The comment object. |
| 728 | */ |
| 729 | return apply_filters( 'get_comment_ID', $comment_id, $comment ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.NotLowercase |
| 730 | } |
| 731 | |
| 732 | /** |
| 733 | * Displays the comment ID of the current comment. |
| 734 | * |
| 735 | * @since 0.71 |
| 736 | */ |
| 737 | function comment_ID() { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid |
| 738 | echo get_comment_ID(); |