PHP in Practice: How to Elegantly Handle MySQL and PostgreSQL in the Same Project

In modern web development, it's increasingly common for a single project to connect to multiple types of databases. This article provides a clear, practical guide on how to seamlessly connect to and operate both MySQL and PostgreSQL within the same PHP project using the PDO extension. We will offer a reusable database connection management class and detail the key differences between the two databases in practice, helping you master multi-database environments with ease.