MarsSeed [1] filed a deletion request for php7-oci8 [2]: Broken, unneeded package: missing php7 dependency. There's still a functional php74-oci build on AUR, for php74.
[1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/php7-oci8/
