Although vim8.x+ has plugin management feature, I still like to use vundle to manage all the plugins, so we have to setup vundle first:
git clone https://github.com/VundleVim/Vundle.vim.git ~/.vim/bundle/Vundle.vim
- start you vim editor
- type command:
:VundleInstall
/usr/local/php/bin/pear install doc.php.net/pman