Forbidden 403 errors / images broken

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Well php.ini may be located in your ftp root directory's subfolder called 'php'. Some webhosts do not allow their clients to modify php.ini manually, and if this is the case you won't see php.ini from ftp. You'd have to consult your webhost and ask them to modify the php.ini settings. I was wondering though, who is your webhost provider? Or do you host your site on a local machine? It's rare for allow_url_fopen to be disabled by any kind of hosting services, there must be a mistake.