The OCI8 extension lets you access Oracle Database.
Use 'pecl install oci8' to install for PHP 8.1.
Use 'pecl install oci8-3.0.1' to install for PHP 8.0.
Use 'pecl install oci8-2.2.0' to install for PHP 7.
Use 'pecl install oci8-2.0.12' to install for PHP 5.2 - PHP 5.6.
Use 'pecl install oci8-1.4.10' to install for PHP 4.3.9 - PHP 5.1.
[username@hostname ~]# php -v
^ To see PHP version