Convert Perl CGI script to PHP

The purpose of the Perl CGI script is to take UTF8 parameters, perform a computation, and return the result in ASCII form. Your task is to convert the short Perl script to PHP 5. The PHP script must work in the Resin environment: [login to view URL] The perl script makes use of: RSA MD5 Base32 Pack and Unpack Success will be based upon: - input tests producing output data which is correct (to be confirmed by me) - script running in Resin environment (to be confirmed by me) Please provide details / examples of your experience with Perl and PHP. This is a relatively simple job for an experienced programmer.