get utm source, name and all

gistfile1.aw

function getUtm(){
    $utm = array();
    if(!empty($_COOKIE['__utmz'])){
        $pattern = "/(utmcsr=([^\|]*)[\|]?)|(utmccn=([^\|]*)[\|]?)|(utmcmd=([^\|]*)[\|]?)|(utmctr=([^\|]*)[\|]?)|(utmcct=([^\|]*)[\|]?)/i";
        preg_match_all($pattern, $_COOKIE['__utmz'], $matches);
        if(!empty($matches[0])){
            foreach($matches[0] as $match){
                $pair = null;
                $match = trim($match, "|");
                list($k, $v) = explode("=", $match);
                $utm[$k] = $v;
           }
        }
    }
    return $utm;
}