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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 |
|---|---|
| 25 | if (!empty($comment->user_id)){ |
| 26 | $user=get_userdata($comment->user_id); |
| 27 | $author=$user->user_login; |
| 28 | } else { |
| 29 | $author = __('Anonymous'); |
| 30 | } |
| 31 | } else { |
| 32 | $author = $comment->comment_author; |
| 33 | } |
| 34 | return apply_filters('get_comment_author', $author); |
| 35 | } |
| 36 | |
| 37 | /** |
| 38 | * Displays the author of the current comment. |
| 39 | * |
| 40 | * @since 0.71 |
| 41 | * @uses apply_filters() Calls 'comment_author' on comment author before displaying |
| 42 | */ |
| 43 | function comment_author() { |