a function to check directory depth

Posted on 16th Feb 2014 07:03 pm by admin

I'm working on a php script to upload files in to a set directory.
the user can select to upload into the "upload" directory or any of its subdirectories.
at the moment the user is able to `trick` the script into uploading a file into a lower directory by typing in "upload/../../" as the upload directory

I want to know if there is any way to verify the destination directory to make sure it is higher then the set directory.
Or use php.ini to restrict the directory allowed to upload

thanks

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