Question

我想要实现的是根据用户的操作系统触发自动文件下载。使用下面的代码我得到空字符串（虽然应该有文件的url）和页面刷新循环。

e.g。

Windows
var downloadTimeout = setTimeout(function () {
    window.location = 'there supposed to be url to file but its blank';
}, 500);

有人可以指导我做错了吗？

操作系统检测：

<?php 
$user_agent = $_SERVER['HTTP_USER_AGENT'];

function getOS() { 

    global $user_agent;

    $os_platform  = "Unknown OS Platform";

    $os_array     = array(
                          '/windows nt 10/i'      =>  'Windows 10',
                          '/windows nt 6.3/i'     =>  'Windows 8.1',
                          '/windows nt 6.2/i'     =>  'Windows 8',
                          '/windows nt 6.1/i'     =>  'Windows 7',
                          '/windows nt 6.0/i'     =>  'Windows Vista',
                          '/windows nt 5.2/i'     =>  'Windows Server 2003/XP x64',
                          '/windows nt 5.1/i'     =>  'Windows XP',
                          '/windows xp/i'         =>  'Windows XP',
                          '/windows nt 5.0/i'     =>  'Windows 2000',
                          '/windows me/i'         =>  'Windows ME',
                          '/win98/i'              =>  'Windows 98',
                          '/win95/i'              =>  'Windows 95',
                          '/win16/i'              =>  'Windows 3.11',
                          '/macintosh|mac os x/i' =>  'Mac OS X',
                          '/mac_powerpc/i'        =>  'Mac OS 9',
                          '/linux/i'              =>  'Linux',
                          '/ubuntu/i'             =>  'Ubuntu',
                          '/iphone/i'             =>  'iPhone',
                          '/ipod/i'               =>  'iPod',
                          '/ipad/i'               =>  'iPad',
                    );

    foreach ($os_array as $regex => $value)
        if (preg_match($regex, $user_agent))
            $os_platform = $value;

    return $os_platform;
}

if( substr(getOS(), 0, 6) === 'Windows' ){
    $file = 'https://path-to-file.exe';
}
else if( substr(getOS(), 0, 2) === 'Mac'  ){
    $file = 'https://path-to-file.dmg';
}
else if( substr(getOS(), 0, 4) === 'Linux'  ){
    $file = 'https://path.air';
}
else{
}
?>

自动下载触发器：

var downloadTimeout = setTimeout(function () {
    window.location = '<?php echo $file; ?>';
}, 500);

Answer 1

我找到了一个对我有用的解决方法。没什么好看的，只是一个想法

getOS（）工作正常并回应我的操作系统;基于$ os_array中的选项，所以我将链接放到我的文件而不是操作系统名称，而不是使用getOS而不是$ file变量。丑陋，但至少有效

操作系统检测 - 空变量

1 个答案: