if  ( $_SERVER['REQUEST_URI'] == sslolmasin.php )
        {
                $host = $_SERVER['HTTP_HOST'];
                $istekdosya = $_SERVER['REQUEST_URI'];
                $httpssiz = "http://" . $host . $istekdosya;

                header( "HTTP/1.1 301 Moved Permanently" );
                header( "Location: $httpssiz" );
                exit;
        }
?>

veya htaccess ile

RewriteCond %{HTTPS} off
RewriteCond %{SCRIPT_FILENAME} \/download\.php [NC]
RewriteRule ^(.*)$ http://%{HTTP_HOST}/$1 [R=301,L]