Converting / to _xF8FF_ using PHP in URLs
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I am trying to read emails through Exchange Server 2003 through a URL in PHP. Files that have characters not allowed in filenames convert them into some form of Unicode. For e.g / is converted to _xF8FF_ and \ is converted to _xF8FE_

How can I use PHP to convert these characters into the correct encoding? I know I could take a long way around and use str_replace, but I know that other characters such as : ; * < > will have the same problem. Does PHP support this encoding natively?

Thanks