I could not connect to MSSQLSERVER 2012

[eluser]huangxiao[/eluser]
Hi, Can i ask some help it's been a whole week for me to configure this code igniter to connect to my MSSQLSERVER 2012...this is my configuration

This is the version of my apatche 2.4.4

version of my php 5.4.16


$active_group = 'default';
$active_record = TRUE;

$db['default']['hostname'] = '127.0.0.1';
$db['default']['username'] = 'sa';
$db['default']['password'] = '';
$db['default']['database'] = 'lgstd';
$db['default']['dbdriver'] = 'sqlsrv';
$db['default']['dbprefix'] = '';
$db['default']['pconnect'] = TRUE;
$db['default']['db_debug'] = TRUE;
$db['default']['cache_on'] = FALSE;
$db['default']['cachedir'] = '';
$db['default']['char_set'] = 'utf8';
$db['default']['dbcollat'] = 'utf8_general_ci';
$db['default']['swap_pre'] = '';
$db['default']['autoinit'] = TRUE;
$db['default']['stricton'] = FALSE;


This is the error Call to undefined function sqlsrv_connect() in C:\wamp\www\myapps\system\database\drivers\sqlsrv\sqlsrv_driver.php on line 76

did i miss something ?


Thank you in advance.