src/Colorium/Http/Uri.php
public function param($key)
    {
        return isset($this->params[$key])
            ? $this->params[$key]
            : null;
    }
public function param($key)
    {
        return isset($this->params[$key])
            ? $this->params[$key]
            : null;
    }
Get uri param

@param string $key
@return string