thinkphp获取当前服务器系统环境

   $user_agent = request()->header('user-agent');
        if (false !== stripos($user_agent, 'win')) {
            $user_os = 'Windows';
        } elseif (false !== stripos($user_agent, 'mac')) {
            $user_os = 'MAC';
        } elseif (false !== stripos($user_agent, 'linux')) {
            $user_os = 'Linux';
        } elseif (false !== stripos($user_agent, 'unix')) {
            $user_os = 'Unix';
        } elseif (false !== stripos($user_agent, 'bsd')) {
            $user_os = 'BSD';
        } elseif (false !== stripos($user_agent, 'iPad') || false !== stripos($user_agent, 'iPhone')) {
            $user_os = 'IOS';
        } elseif (false !== stripos($user_agent, 'android')) {
            $user_os = 'Android';
        } else {
            $user_os = 'Other';
        }
        return   $user_os ;