php+iis虚拟目录无效
大神们刚接触PHP，我在用IIS设置了一个虚拟目录upload使用file_exists或者is_file检测文件是否存在时都是返回的false
网站绝对路径为:D:\web\
upload虚拟目录绝对路径为：E:\upload
现在用is_file检测的不是虚拟目录的路径仍然是网站绝对路径下的D:\web\upload请问我该如何设置才能实现检测E:\upload呢？
回复讨论(解决方案)
虚拟目录 是 Web 系统的，用于将不在默认管辖范围的目录（包括其他机器上的目录）整合到当前站点中
file_exists 等是文件系统函数，不可能主动识别 web 系统的虚拟目录
你可以
1、写全路径
2、临时改变 php 的工作路径
3、将 虚拟目录 的绝对路径添加到 include_path 中
define('UPLOAD_PATH','E:\upload');
上传的时候就获取绝对的路径。
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