Hi All, I'm having problem while connecting to MS SQL server from my php program. I tried downloading driver from Microsoft and changed php.ini file but it is showing the following error. This statement I used to connect. $connect = mssql_connect("localhost", "PC6", "password"); This is the error message I got Call to undefined function mssql_connect() in C:\wamp\www\Test\dbTest.php Then I tried other one as shown below: This statement I used to connect. $connect = sqlsrv_connect("localhost", "PC6", "password"); This is the error message I got Array ( [0] => Array ( [0] => IMSSP [SQLSTATE] => IMSSP [1] => -49 [code] => -49 [2] => This extension requires the Microsoft SQL Server 2012 Native Client. Access the following URL to download the Microsoft SQL Server 2012 Native Client ODBC driver for x86: http://go.microsoft.com/fwlink/?LinkId=163712 [message] => This extension requires the Microsoft SQL Server 2012 Native Client. Access the following URL to download the Microsoft SQL Server 2012 Native Client ODBC driver for x86: http://go.microsoft.com/fwlink/?LinkId=163712 ) [1] => Array ( [0] => IM002 [SQLSTATE] => IM002 [1] => 0 [code] => 0 [2] => [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified [message] => [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified ) ) It is asking to download a native client. but i have already downloaded a driver at http://www.microsoft.com/en-in/download/details.aspx?id=20098 named SQLSRV30.EXE why do I need a native client or ODBC driver when I already got this driver installed in my system. Please help me out with this guys. I'm new to this. Thanks, Girish Talluru