PHP识别url重写请求
现在很多PHP程序都使用了url重写技术来优化url，但是有时候我们要在PHP程序中区分默认url的请求和url重写后的请求，这该如何处理呢？ 我的解决方案是在常量$_SERVER里面找答案,在不同的服务器中$_SERVER都会有一个索引用来记录重写请求访问重写之前的路径，
现在很多PHP程序都使用了url重写技术来优化url，但是有时候我们要在PHP程序中区分默认url的请求和url重写后的请求，这该如何处理呢？
我的解决方案是在常量$_SERVER里面找答案,在不同的服务器中$_SERVER都会有一个索引用来记录重写请求访问重写之前的路径，部分主流服务器的索引如下
IIS7 + Rewrite Module -> $_SERVER['HTTP_X_ORIGINAL_URL']
IIS6 + ISAPI Rewite -> $_SERVER['HTTP_X_REWRITE_URL’]
Apache2 -> $_SERVER['REQUEST_URI’] 或 $_SERVER['REDIRECT_URL']
nginx -> $_SERVER['REQUEST_URI’]
因此得出的结果是，只要判断 HTTP_X_ORIGINAL_URL, HTTP_X_REWRITE_URL, REQUEST_URI, REDIRECT_URL 这些参数，我们就可以在PHP中来判断请求url来自于重写地址的还是默认格式的地址了。
注：关于url重写
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