SlightPHP\Rest_Http::getServer PHP Method

    public static function getServer($key)
    {
        $key = self::hash($key);
        $left = 0;
        $right = self::$_serverCt - 1;
        $index = 0;
        while ($left < $right - 1) {
            $middle = (int) (($left + $right) / 2);
            if ($key <= self::$_servers[$left]['id']) {
                $index = $left;
                break;
            }
            if ($key >= self::$_servers[$right]['id']) {
                $index = $right;
                break;
            }
            $t = self::$_servers[$middle]['id'];
            if ($key == $t) {
                $index = $middle;
            }
            if ($key > $t) {
                $left = $middle;
                $index = $right;
            } else {
                $right = $middle;
                $index = $middle;
            }
        }
        $server = self::$_servers[$index];
        $server['index'] = $index;
        return $server;
    }