请教怎么获取用户的来源

WBOY
Release: 2016-06-13 13:48:19
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请问如何获取用户的来源?
我想知道用户在打开某个网址前一个网址,比如你先访问 a.com 然后再到 b.com,要想知道在b.com上知道你是从 a.com来的,并在url中以from=a.com的形式显示出来, 请问这个信息怎么获得呢?

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$_SERVER[“HTTP_REFERER”]
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只有通过点击通过js.flash.直接打开 等等方式过来的是无法获取的
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定义唯一标识,传递唯一标识。
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探讨
$_SERVER[“HTTP_REFERER”]

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PHP code
$_SERVER[“HTTP_REFERER”] <div class="clear">
                 
              
              
        
            </div>
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