我找到了解决这个问题的灵活方案.这是通过查找/ etc目录中的发布文件(而不是打印实际上在文件中的内容),所以如果我在Arch Linux上运行这个脚本,它将检查/ etc目录中的arch-release文件等等其他Linux发行版.

这是代码：

重要笔记：

>如果你不修改PHP.ini文件并允许对它进行文件操作,PHP将不会扫描/ etc目录(修改open_basedir选项,通过添加：/ etc /到最后.)
>以下代码中可识别的发行版列表很容易扩展,您只需要发行版的漂亮名称(例如Ubuntu)及其发布文件的名称(例如lsb-release).有关着名的Linux发行版的完整列表,click here.

function getLinuxDistro()
    {
        //declare Linux distros(extensible list).
        $distros = array(
                "Arch" => "arch-release","Debian" => "debian_version","Fedora" => "fedora-release","Ubuntu" => "lsb-release",'redhat' => 'redhat-release','CentOS' => 'centos-release');
    //Get everything From /etc directory.
    $etcList = scandir('/etc');

    //Loop through /etc results...
    $OSDistro;
    foreach ($etcList as $entry)
    {
        //Loop through list of distros..
        foreach ($distros as $distroReleaseFile)
        {
            //Match was found.
            if ($distroReleaseFile === $entry)
            {
                //Find distros array key(i.e. Distro name) by value(i.e. distro release file)
                $OSDistro = array_search($distroReleaseFile,$distros);

                break 2;//Break inner and outer loop.
            }
        }
    }

    return $OSDistro;

}  }@H_406_24@