For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/server:monitoring/openSUSE_Tumbleweed/server:monitoring.repo
zypper refresh
zypper install php5-ssh2
For openSUSE Factory zSystems run the following as root:
zypper addrepo https://download.opensuse.org/repositories/server:monitoring/openSUSE_Factory_zSystems/server:monitoring.repo
zypper refresh
zypper install php5-ssh2
For openSUSE Factory PowerPC standard run the following as root:
zypper addrepo https://download.opensuse.org/repositories/server:monitoring/openSUSE_Factory_PowerPC_standard/server:monitoring.repo
zypper refresh
zypper install php5-ssh2
For openSUSE Factory ARM run the following as root:
zypper addrepo https://download.opensuse.org/repositories/server:monitoring/openSUSE_Factory_ARM/server:monitoring.repo
zypper refresh
zypper install php5-ssh2