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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 |
|---|---|
| 63 | /** |
| 64 | * Filters the comment author's name for display. |
| 65 | * |
| 66 | * @since 1.2.0 |
| 67 | * @since 4.1.0 The `$comment_ID` parameter was added. |
| 68 | * |
| 69 | * @param string $author The comment author's username. |
| 70 | * @param int $comment_ID The comment ID. |
| 71 | */ |
| 72 | echo apply_filters( 'comment_author', $author, $comment->comment_ID ); |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * Retrieve the email of the author of the current comment. |
| 77 | * |
| 78 | * @since 1.5.0 |
| 79 | * @since 4.4.0 Added the ability for `$comment_ID` to also accept a WP_Comment object. |
| 80 | * |
| 81 | * @param int|WP_Comment $comment_ID Optional. WP_Comment or the ID of the comment for which to get the author's email. |