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I'm getting php errors indicating that a particular function has been disabled ever since you did the work on my server. How can I fix this?

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As part of the cPanel Service Package we disable certain PHP functions that are known to be a potential security risk in allowing hackers access to the server. These functions include show_source, system, shell_exec, passthru, exec, phpinfo, popen, proc_open, allow_url_fopen. If you require any of these functions to be enabled, edit the file /usr/local/lib/php.ini, search for "disable_function", and remove any functions from the list that you want to enable again.

You need to be aware that in server administration there is often a trade-off between security and convenience, and enabling these functions will increase the vulnerability of your server to exploits of php scripts.

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