Para openSUSE Tumbleweed corra o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/home:jetchisel/openSUSE_Tumbleweed/home:jetchisel.repo
zypper refresh
zypper install phpvirtualbox
Para openSUSE Factory corra o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/home:jetchisel/openSUSE_Factory/home:jetchisel.repo
zypper refresh
zypper install phpvirtualbox
Para SLE 15 SP1 Backports corra o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/home:jetchisel/SLE_15_SP1_Backports/home:jetchisel.repo
zypper refresh
zypper install phpvirtualbox
Para 15.4 corra o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/home:jetchisel/15.4/home:jetchisel.repo
zypper refresh
zypper install phpvirtualbox