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Well this is usually a hidden directory only accessible to the webhost itself. I was wondering if you could use a custom php.ini file though, download the attachment below and upload it to your public_html directory. Some webhosts allow you to use custom php.ini which overwrites part of their default settings, not all of them do though. Lemme know if this solves your problem, otherwise you'd have to consult your friend and persuade him to enable allow_url_fopen.