Well , If you did a little re-search c99 , c100 , r57 etc all those shells use shell_exec . So yes by disabling functions like that you will be safe from shells
Dom Reviewed by Dom on . [TUT] KWWH special ! : How to Harden PHP via php.ini Hello Guys , This is my tutorial on how to harden PHP via the php.ini to stop those horrible php shells like c99. Ok lets get started ~ http://www.besthostingforums.com/images/cdn/besthostingforums.com/2011/05/th_harden-1.gif Step 1 : Install Suhostin : Rating: 5