CentOS

Install "php-soap":
sudo yum install php70w-soap

Terminal:
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* base: mirror.digistar.vn
* epel: epel.mirror.srv.co.ge
* extras: centos-hn.viettelidc.com.vn
* nux-dextop: mirror.li.nux.ro
* updates: mirror.digistar.vn
* webtatic: sp.repo.webtatic.com