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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 |
|---|---|
| 72 | function get_comment_author_email( $comment_ID = 0 ) { |
| 73 | $comment = get_comment( $comment_ID ); |
| 74 | /** |
| 75 | * Filter the comment author's returned email address. |
| 76 | * |
| 77 | * @since 1.5.0 |
| 78 | * |
| 79 | * @param string $comment_author_email The comment author's email address. |
| 80 | */ |
| 81 | return apply_filters( 'get_comment_author_email', $comment->comment_author_email ); |
| 82 | } |
| 83 | |
| 84 | /** |
| 85 | * Display the email of the author of the current global $comment. |
| 86 | * |
| 87 | * Care should be taken to protect the email address and assure that email |
| 88 | * harvesters do not capture your commentors' email address. Most assume that |
| 89 | * their email address will not appear in raw form on the blog. Doing so will |
| 90 | * enable anyone, including those that people don't want to get the email |