Error call controller, can you help me?

[dat11509vc]

My source code has config Route and remove index.php and using sql server.
When run 'php index.php welcome index ', it show error:
`C:\xampp\htdocs>php index.php welcome index

An uncaught Exception was encountered

Type: Error
Message: Call to undefined function sqlsrv_connect()
Filename: C:\xampp\htdocs\system\database\drivers\sqlsrv\sqlsrv_driver.php
Line Number: 144

Backtrace:
File: C:\xampp\htdocs\application\controllers\Load_Page.php
Line: 8
Function: __construct

    File: C:\xampp\htdocs\index.php
    Line: 315
    Function: require_once`

My source code working ok.

[takielias]

How can I reproduce this error? Can you please explain?