Para openSUSE Tumbleweed execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/home:weberho:branches:server:php:applications/openSUSE_Tumbleweed/home:weberho:branches:server:php:applications.repo
zypper refresh
zypper install php-ezyang-htmlpurifier
Para 15.6 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/home:weberho:branches:server:php:applications/15.6/home:weberho:branches:server:php:applications.repo
zypper refresh
zypper install php-ezyang-htmlpurifier
Para 15.5 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/home:weberho:branches:server:php:applications/15.5/home:weberho:branches:server:php:applications.repo
zypper refresh
zypper install php-ezyang-htmlpurifier