isset()的疑问,该怎么解决
isset()的疑问
isset（）用于检验变量是否设置。
我有个疑问，首先表单里，如
这个表单，我就算不填任何东西，提交到后台，isset($_REQUEST["age"])也是true呀。。那你到底检测什么？用户自己造参数访问？减少不必要假请求？
还有就是设置个隐藏域，来检测表单是否提交，那用户检查元素，查到了这里的name，也是可以伪造一个提交的过程呀？
isset（）的意义到底在哪？
------解决方案--------------------
是否设置 不是检测 是否填写了任何东西
如果要判断是否有内容 应该使用empty()函数
还有就是设置个隐藏域，来检测表单是否提交，那用户检查元素，查到了这里的name，也是可以伪造一个提交的过程呀？
这个时候就需要你对提交的 name数据做一个校验了
最简单的 验证码 /token/加密 不都可以吗？
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