php man page for pdo_dblib-dsn

PDO_DBLIB-DSN(3)							 1							  PDO_DBLIB-DSN(3)

PDO_DBLIB DSN - Connecting to Microsoft SQL Server and Sybase databases

	The PDO_DBLIB Data Source Name (DSN) is composed of the following elements:

	      o DSN prefix
		-  The	DSN  prefix is sybase: if PDO_DBLIB was linked against the Sybase ct-lib libraries, mssql: if PDO_DBLIB was linked against
		the Microsoft SQL Server libraries, or dblib: if PDO_DBLIB was linked against the FreeTDS libraries.

	      o host - The hostname on which the database server resides. Defaults to 127.0.0.1.

	      o dbname - The name of the database.

	      o charset - The client character set.

	      o appname - The application name (used in sysprocesses). Defaults to "PHP Generic DB-lib" or "PHP freetds".

	      o secure - Currently unused.

       Example #1

	      PDO_DBLIB DSN examples

	       The following examples show a PDO_DBLIB DSN for connecting to Microsoft SQL Server and Sybase databases:

	      mssql:host=localhost;dbname=testdb
	      sybase:host=localhost;dbname=testdb
	      dblib:host=localhost;dbname=testdb

PHP Documentation Group 													  PDO_DBLIB-DSN(3)