Introduction
PDO_DBLIB is a driver that implements the PHP
Data Objects (PDO) interface to enable access from PHP to
Microsoft SQL Server and Sybase databases through the FreeTDS library.
This extension is not available anymore on Windows.
On Windows, you should use SqlSrv, an alternative driver for MS SQL is
available from Microsoft: » https://msdn.microsoft.com/en-us/sqlserver/ff657782.aspx
.
If it is not possible to use SqlSrv, you can use the
PDO_ODBC driver to connect to
Microsoft SQL Server and Sybase databases, as the native Windows DB-LIB
is ancient, thread un-safe and no longer supported by Microsoft.