Para openSUSE Tumbleweed execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/devel:languages:php:php84/openSUSE_Tumbleweed/devel:languages:php:php84.repo
zypper refresh
zypper install php8
Para openSUSE Slowroll execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/devel:languages:php:php84/openSUSE_Slowroll/devel:languages:php:php84.repo
zypper refresh
zypper install php8
Para openSUSE Factory execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/devel:languages:php:php84/openSUSE_Factory/devel:languages:php:php84.repo
zypper refresh
zypper install php8
Para 15.7 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/devel:languages:php:php84/15.7/devel:languages:php:php84.repo
zypper refresh
zypper install php8