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用户名重复检测有关问题

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Release： 2016-06-13 10:29:10
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用户名重复检测问题
我想做那种输了用户名，然后点一个按钮，就可以检测用户名是否合法的注册方法，求高手指教一二。
还有就是php代码是不是在用户点击提交按钮之后才能获取html表单的数据？

------解决方案--------------------
可以在客户端验证一把，在到服务端严重一把！


在到服务端严重看看，是不是你要的，你看看

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