扫描同一个二维码根据浏览器类型访问不同下载地址，浏览器类型

扫描同一个二维码根据浏览器类型访问不同下载地址，浏览器类型

<span> 1</span> <?<span>php
</span><span> 2</span> 
<span> 3</span> <span>$Agent</span> = <span>$_SERVER</span>['HTTP_USER_AGENT'<span>];
</span><span> 4</span>     <span>preg_match</span>('/android|iphone/i',<span>$Agent</span>,<span>$matches</span><span>);
</span><span> 5</span>     <span>if</span> (<span>strtolower</span>(<span>$matches</span>[0]) == 'android'<span>)  {
</span><span> 6</span>         <span>//</span><span> echo "安卓";</span>
<span> 7</span>         <span>header</span>("Location: ".<span>$GLOBALS</span>["public_appconfig"]["app"]['android']."'"<span>);
</span><span> 8</span>     } <span>elseif</span> (<span>strtolower</span>(<span>$matches</span>[0]) == 'iphone'<span>) {
</span><span> 9</span>         <span>header</span>("'Location: ".<span>$GLOBALS</span>["public_appconfig"]["app"]['ios']."'"<span>);
</span><span>10</span>     }<span>else</span><span>{
</span><span>11</span>         <span>//</span><span>不确定是什么系统或者是pc</span>
<span>12</span>         <span>header</span>("Location: ".<span>$GLOBALS</span>["public_appconfig"]["app"]['android']."'"<span>);
</span><span>13</span> <span>    }
</span><span>14</span>    
<span>15</span>
<span>16</span> ?>

 

java二维码扫描到一段字符串怎不同是一个网址，如果是网址怎跳转到浏览器访问该网址？

用正则表达式来判断是不是网址
然后用Intent跳转到浏览器
 

扫描二维码下载安装文件到手机，一个二维码，问怎分辨手机时IOS系统或ANDROID系统？

你可以把这两个放到同一个网站页面里，然后把网址链接制作成二维码，让需要下载的人自主选择下载，如下图