下列驱动目前实现了 PDO 接口：
| 驱动名称 | 支持的数据库 |
|---|---|
| PDO_CUBRID | Cubrid |
| PDO_DBLIB | FreeTDS / Microsoft SQL Server / Sybase |
| PDO_FIREBIRD | Firebird |
| PDO_IBM | IBM DB2 |
| PDO_INFORMIX | IBM Informix Dynamic Server |
| PDO_MYSQL | MySQL 3.x/4.x/5.x |
| PDO_OCI | Oracle Call Interface |
| PDO_ODBC | ODBC v3 (IBM DB2, unixODBC and win32 ODBC) |
| PDO_PGSQL | PostgreSQL |
| PDO_SQLITE | SQLite 3 及 SQLite 2 |
| PDO_SQLSRV | Microsoft SQL Server / SQL Azure |
Watch out!
If you use PDO SQLSRV on windows 7, using 32 bit php on XAMMP, you might encounter driver problems : "This extension requires the Microsoft ODBC Driver 11 for SQL Server to communicate with SQL Server"
The reason, Microsoft 32-bit ODBC driver doesn't install properly on 64-bit Windows 7.
Check the solution to PDO SQLSRV driver problem here in [StackOverflow][1]
https://stackoverflow.com/a/46245990/1330248
For those seeking Netezza access you can use php_odbc or pdo_odbc. They both work flawlessly. Found some issues between Web vs CLI that were around LD_LIBRARY_PATH setting in Unix. As long as this is set in Unix and Apache environment it will work.