一.需要安装libzookeeper
https://launchpad.net/ubuntu/+source/zookeeper/3.4.13-1

wget http://launchpadlibrarian.net/385027971/libzookeeper-mt-dev_3.4.12-2_amd64.deb

wget http://launchpadlibrarian.net/385027979/libzookeeper-mt2_3.4.12-2_amd64.deb

sudo dpkg -i libzookeeper-mt2_3.4.12-2_amd64.deb
sudo dpkg -i libzookeeper-mt-dev_3.4.12-2_amd64.deb

二.扩展安装
sudo pecl install zookeeper