Para openSUSE Leap 42.3 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/spins:invis:stable/openSUSE_Leap_42.3/spins:invis:stable.repo
zypper refresh
zypper install php5
Para openSUSE Leap 42.2 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/spins:invis:stable/openSUSE_Leap_42.2/spins:invis:stable.repo
zypper refresh
zypper install php5
Para openSUSE 42.1 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/spins:invis:stable/openSUSE_42.1/spins:invis:stable.repo
zypper refresh
zypper install php5
Para openSUSE 13.1 execute o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/spins:invis:stable/openSUSE_13.1/spins:invis:stable.repo
zypper refresh
zypper install php5