Edit: Sorry brian d foy. See comments.
brian d foy writes in this article, O’Reilly Network: Perl versus PHP 5, that he’s seen a lot of complaints about how hard it is to install modules in Perl. Now either he doesn’t use Perl, or maybe he just doesn’t know.
perl -MCPAN -e 'install Module::Name'
That’s it. PHP doesn’t have a vast module network. I don’t hate PHP, but sooo many security issues, im ALWAYS upgrading mod_php. Perl is my language of choice. I’ve used python/php/tcl and I always come back to Perl.