- you can find the direct rpm links at https://yum.oracle.com/repo/OracleLinux/OL7/oracle/instantclient/x86_64/
- wget oracle-instantclient*-basic-[oracle_version].rpm
- wget oracle-instantclient*-devel-[oracle_version].rpm
sudo apt install alien php7.[php version]-dev php-pear
sudo alien -i oracle-instantclient*-basic-[oracle_version].rpm
sudo alien -i oracle-instantclient*-devel-[oracle_version].rpm
[centos