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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 |
|---|---|
| 561 | * |
| 562 | * @since 2.7.0 |
| 563 | * |
| 564 | * @param string[] $classes An array of comment classes. |
| 565 | * @param string[] $css_class An array of additional classes added to the list. |
| 566 | * @param string $comment_id The comment ID as a numeric string. |
| 567 | * @param WP_Comment $comment The comment object. |
| 568 | * @param int|WP_Post $post The post ID or WP_Post object. |
| 569 | */ |
| 570 | return apply_filters( 'comment_class', $classes, $css_class, $comment->comment_ID, $comment, $post ); |
| 571 | } |
| 572 | |
| 573 | /** |
| 574 | * Retrieves the comment date of the current comment. |
| 575 | * |
| 576 | * @since 1.5.0 |
| 577 | * @since 4.4.0 Added the ability for `$comment_id` to also accept a WP_Comment object. |
| 578 | * |
| 579 | * @param string $format Optional. PHP date format. Defaults to the 'date_format' option. |