While more flexible, the .htaccess approach is intrinsically riskier than Ovid's, because you must pass a directory or file derived from untainted user data to a system call (ie. opendir, or open). This means you have to carefully consider all classes of valid input versus invalid and potentially dangerous input. From a security perspective, it's preferable to have a simple mapping of user input to prearranged file locations. 
   MeowChow                                   
               s aamecha.s a..a\u$&owag.print

In reply to Re: Re: Orthogonal Code and Security by MeowChow
in thread Orthogonal Code and Security by Ovid

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