Ingres II
Установка и настройка
Ingres II
PHP Manual

# Введение

These functions allow you to access Ingres II database servers.

> Замечание: If you already used PHP extensions to access other database servers, note that Ingres doesn't allow concurrent queries and/or transaction over one connection, thus you won't find any result or transaction handle in this extension. The result of a query must be treated before sending another query, and a transaction must be committed or rolled back before opening another transaction (which is automatically done when sending the first query).

Ingres II
Установка и настройка
Ingres II
PHP Manual