(PHP 5.3.7, PHP 7, PECL OCI8 >= 1.4.6)
oci_client_version — Returns the Oracle client library version
Returns a string containing the version number of the Oracle C client library that PHP is linked with.
Returns the version number as a string.
Example #1 oci_client_version() example
echo "Client Version: " . oci_client_version(); // Client version: 18.104.22.168
Oracle libraries before 10gR2 do not have the underlying functionality to get the client library version number. The string "Unknown" will be returned in this case.