PHP. Руководство по PHP. 2005
mysqli_get_client_version
mysqli_get_client_version
Возвращаемые значения
A number that represents the MySQL client library version in format:
main_version*10000 + minor_version *100 + sub_version.
For example, 4.1.0 is returned as 40100.
This is useful to quickly determine the version of the client library
to know if some capability exits.
Примеры
mysqli_get_client_info
mysqli_get_host_info
Отвечу на любые вопросы. С уважением, Дмитрий Владимирович.