I highly recommend vdebug (<a href="https://github.com/joonty/vdebug" rel="nofollow">https://github.com/joonty/vdebug</a>) if you're looking for a great Vim interface to DBGP debuggers (for PHP, Python, Ruby, Perl, Node, etc.). Really nice, especially compared to the countless half-broken and out-of-date Vim/DBGP plugins that are scattered around vim.org and github.