think\console\Input::__toString PHP Method

    public function __toString()
    {
        $tokens = array_map(function ($token) {
            if (preg_match('{^(-[^=]+=)(.+)}', $token, $match)) {
                return $match[1] . $this->escapeToken($match[2]);
            }
            if ($token && '-' !== $token[0]) {
                return $this->escapeToken($token);
            }
            return $token;
        }, $this->tokens);
        return implode(' ', $tokens);
    }