Cakephp database connection issue with sql server 2005 in Linux environment

Created by Deepak Bhatt, 23rd Aug 2013. (originally Lighthouse ticket #55):

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Hi,
I am using a Datasources plugin to connect with sql server 2005 in my application. But i am getting following error :

Warning (2): mssql_connect(): Unexpected EOF from the server (severity 9) [APP/Plugin/Datasources/Model/Datasource/Database/Mssql.php, line 155]
Warning (2): mssql_connect() [http://php.net/function.mssql-connect]: Adaptive Server connection failed (severity 9) [APP/Plugin/Datasources/Model/Datasource/Database/Mssql.php, line 155]
Warning (2): mssql_connect() [http://php.net/function.mssql-connect]: Unable to connect to server: 192.168.12.40:1433 [APP/Plugin/Datasources/Model/Datasource/Database/Mssql.php, line 155]
Warning (2): mssql_select_db() expects parameter 2 to be resource, boolean given [APP/Plugin/Datasources/Model/Datasource/Database/Mssql.php, line 160]
Warning (2): Invalid argument supplied for foreach() [APP/Plugin/Datasources/Model/Datasource/Database/Mssql.php, line 246]

Do i need to install any extension or database drivers in my linux machine.

Thanks in advance.

With Regards
Deepak