No se pudo realizar la conexion.
Array
(
    [0] => Array
        (
            [0] => IMSSP
            [SQLSTATE] => IMSSP
            [1] => -49
            [code] => -49
            [2] => This extension requires the Microsoft ODBC Driver 11 for SQL Server. Access the following URL to download the ODBC Driver 11 for SQL Server for x86: http://go.microsoft.com/fwlink/?LinkId=163712
            [message] => This extension requires the Microsoft ODBC Driver 11 for SQL Server. Access the following URL to download the ODBC Driver 11 for SQL Server 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
        )

)