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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 |
|---|---|
| 441 | * Filter the returned CSS classes for the current comment. |
| 442 | * |
| 443 | * @since 2.7.0 |
| 444 | * |
| 445 | * @param array $classes An array of comment classes. |
| 446 | * @param string $class A comma-separated list of additional classes added to the list. |
| 447 | * @param int $comment_id The comment id. |
| 448 | * @param int|WP_Post $post_id The post ID or WP_Post object. |
| 449 | */ |
| 450 | return apply_filters( 'comment_class', $classes, $class, $comment_id, $post_id ); |
| 451 | } |
| 452 | |
| 453 | /** |
| 454 | * Retrieve the comment date of the current comment. |
| 455 | * |
| 456 | * @since 1.5.0 |
| 457 | * |
| 458 | * @param string $d Optional. The format of the date. Default user's setting. |
| 459 | * @param int $comment_ID ID of the comment for which to get the date. Default current comment. |