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能不能不加，用别的办法取代了，因为我想把ASP的程序转换为PHP的程序，我希望HTML文件不改动最好。
还有，就是说加了这个hobby[]，获取到的就会是个数组，不加就不是，这和ASP也不同哦，ASP对于多个name属性值相同的元素，获取到的总是数组。

回复讨论(解决方案)

这个没办法改变了

如果要既不改变HTML结构又想获取多选框的数组，那么楼主可以用JS获取多选框的值并合成JS数组，然后传值给PHP。

这是php的一个约定，除非修改内核，不能改变

但是你也可以自行处理提交的数据，希望你具备着个能力
对于表单

<form method=post>姓名：<input type="text" name="name"><br>性别：<input type="radio" name="Sex" value="1" checked="checked">男<input type="radio" name="Sex" value="0">女<br>爱好：<input type="checkbox" name="hobby" value="太极拳">太极拳<input type="checkbox" name="hobby" value="音乐" checked>音乐<input type="checkbox" name="hobby" value="旅游" checked>旅游<br><input type="submit" value="  提 交　"></form>

提交后用

echo urldecode(file_get_contents('php://input'));

你将得到形如这样的串：name=&Sex=1&hobby=音乐&hobby=旅游
至于接下来要做些什么？那就是你自己的事情了

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