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?