Comparison PHP to Perl

I am looking for a comparison of features supported by PHP vs those supported by Perl. My gut tells me PHP is more robust, but we are trying to implement something in a company that has long had a standard allowing Perl as a "sanctioned" language, but current management does not want to fight for PHP as a new "sanctioned" language (most managers there have never heard of PHP and the resident Java zealots have almost established a monopoly). The kind of thing I am looking for is SESSION support, I know it's supported by PHP, but not sure about Perl. I don't want to have to grow my own session manager. One alternative is mainframe COBOL, which clearly will not support what we want to do. What would I lose by implementing in Perl (other than my mind)? thanks in advance, Warren Vail warren@vailtech.net