Unixcop published a tutorial about installing php-oci8 on Ubuntu.

How to install php-oci8 on Ubuntu

OCI functions allows access to Oracle databases, but, at least in Ubuntu, aren’t included in the default PHP installation. This article will show you how to install php-oci8 on Ubuntu LTS. From the PHP manual: «They support SQL and PL/SQL statements. Basic features include transaction control, binding of PHP variables to Oracle placeholders

How to install php-oci8 on Ubuntu - Unix / Linux the admins Tutorials