Read/set UTF-8 cookie

session_start();

//writes cookie if not exist and makes session variable with same name
function $setUTF8cookie($name, $val){
    if (!isset($_COOKIE['city'])){
        setrawcookie($name,$val);
    }
    $_SESSION[$name]= implode('',json_decode('["'.str_replace('%u','\u',$_COOKIE[$cookieName]).'"]'));
}