A friend of mine, who loves PHP, often tries to convince me to write Web apps in PHP. He knows I am a Perl lover, and I just say: "PHP doesn't like me". But next time he tries it hard, I'd like to put him in troubles with a detailed and specific list of features or issues about Perl-vs-PHP topic.
I think experienced programmers appreciate the huge list of features and options available with Perl.
I want to write a list of PHP problems to argue convincingly with my friend.