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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 |
|---|---|
| 212 | |
| 213 | if ('' == $comment->comment_author_email || '' == $comment->comment_author) { |
| 214 | $from = "From: \"$blogname\" <wordpress@" . $_SERVER['SERVER_NAME'] . '>'; |
| 215 | } else { |
| 216 | $from = 'From: "' . $comment->comment_author . "\" <$comment->comment_author_email>"; |
| 217 | } |
| 218 | |
| 219 | $notify_message = apply_filters('comment_notification_text', $notify_message); |
| 220 | $subject = apply_filters('comment_notification_subject', $subject); |
| 221 | $message_headers = apply_filters('comment_notification_headers', $message_headers); |
| 222 | |
| 223 | $message_headers = "MIME-Version: 1.0\n" |
| 224 | . "$from\n" |
| 225 | . "Content-Type: text/plain; charset=\"" . get_settings('blog_charset') . "\"\n"; |
| 226 | |
| 227 | @wp_mail($user->user_email, $subject, $notify_message, $message_headers); |
| 228 | |
| 229 | return true; |
| 230 | } |