I don't want to seem offensive and insult you or anything, but why on earth are you asking a bunch of Perl developers if they think that Perl is obsolete? Are you going to ask some Java developers if Java is slow? And some C programmers if C is insecure?

If you want opinions and comparisons about Perl and PHP, just Google for it. There are a billion or so web pages and newgroup postings on the subject. If you have specific questions about how Perl handles various problems, come back and ask them here.