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Serendipity is a user-friendly popular PHP blog

Comment spam[edit | edit source]

Insert this at the beginning of comment.php to prevent anyone from spamming your blog without being referred from the blog (this prevents spamming from third party URLs and automated software).

 $referrer = parse_url( $_SERVER[ "HTTP_REFERER" ] );
 if ( $referrer[ "host" ] != $_SERVER["HTTP_HOST"] ) {
 echo "Don't post from another server!";

External links[edit | edit source]