簡介：
The SQLSRV extension allows you to access Microsoft SQL Server and SQL Azure databases. The 3.0 release of the driver supports SQL Server, beginning with SQL Server 2005,
including SQL Server 2012 and SQL Server 2012 LocalDB. (For more information about LocalDB, see » PHP Driver for SQL Server Support for LocalDB and » SQL Server 2012 Express
LocalDB.)
翻譯：
SQLSRV擴充允許您通路Microsoft SQL Server和SQL Azure資料庫。該驅動程式的3.0版本支援SQL Server，從SQL Server 2005開始，包括SQL Server 2012和SQL Server 2012 LocalDB。
(有關LocalDB的更多資訊，請參見“支援LocalDB的SQL Server的PHP驅動程式”和“SQL Server 2012 Express LocalDB”。
參考文檔：https://www.php.net/manual/zh/intro.sqlsrv.php
下載下傳安裝sqlsrv擴充
2):在php.ini檔案中配置
extension=php_sqlsrv_54_ts.dll
extension=php_pdo_sqlsrv_54_ts.dll
3)通過phpinfo檢視是否安裝成功
4)除了安裝sqlsrv擴充外，sqlserver還需要安裝Microsoft ODBC Driver For SQL Server 驅動