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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 |
|---|---|
| 167 | * Care should be taken to protect the email address and assure that email |
| 168 | * harvesters do not capture your commenter's email address. |
| 169 | * |
| 170 | * @since 1.2.0 |
| 171 | * @since 4.1.0 The `$comment` parameter was added. |
| 172 | * |
| 173 | * @param string $comment_author_email The comment author's email address. |
| 174 | * @param object $comment The comment object. |
| 175 | */ |
| 176 | $email = apply_filters( 'comment_email', $comment->comment_author_email, $comment ); |
| 177 | if ((!empty($email)) && ($email != '@')) { |
| 178 | $display = ($linktext != '') ? $linktext : $email; |
| 179 | $return = $before; |
| 180 | $return .= "<a href='mailto:$email'>$display</a>"; |
| 181 | $return .= $after; |
| 182 | return $return; |
| 183 | } else { |
| 184 | return ''; |
| 185 | } |