public function get($key, $default = null)
    {
        $key = $this->normalizeKey($key);
        if(!$this->existsNormalized($key)) {
            return $default;
        }
        
        return $this->server[$key];
    }
public function get($key, $default = null)
    {
        $key = $this->normalizeKey($key);
        if(!$this->existsNormalized($key)) {
            return $default;
        }
        
        return $this->server[$key];
    }
public function get ( $ key , $ default = null ) { $ key = $ this -> normalizeKey ( $ key ) ; if ( ! $ this -> existsNormalized ( $ key ) ) { return $ default ; } return $ this -> server [ $ key ] ; }
Get value, or if missing return a default one
@param string $key
@param string|null $default
@return string
Get value or if missing return a default one