关于php客户端和服务器端的疑惑,该怎么处理
关于php客户端和服务器端的疑惑
我明白客户端就是浏览器执行的，服务器端就是服务器那边执行的部分。
我困惑的是 我在写代码的时候 怎么判断哪些代码是浏览器端执行的还是服务器端执行的？？
是不是$_GET, $_POST, $REQUEST那样的大写的变量都是服务器端的？
还有，比如以前我问过一个问题，就是关于表单重复提交，CSDN上朋友们说在客户端写个判断代码，然后服务器端写个判断代码。虽然现在已经基本解决了，但是我感觉我肯定只是写了客户端的，没弄明白服务器端是怎么回事。
我没有php教程，请朋友们说的详细点，谢谢了！
------解决方案--------------------
非常简单，标签内的代码由服务器端执行，其它的代码都由浏览器负责解释。
------解决方案--------------------
PHP代码都是在服务器端执行的.
js代码都是在浏览器执行的.
$_GET...$_POST都是由客户端提交到服务器端的，当然服务器端要接收才行.
服务器端，也就是你的php代码部分,POST数据接收处理部分
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