Connection problem with sqlsrv driver

[nkpin]

Hi

I have two databases the first is MariaDB it's works.

But when I try connect to MS SQL with sqlsrv driver or pdo_sqlsrv driver cannot connect.

Do you know something about that?

This is the error

Unable to connect to your database server using the provided settings.

Filename: C:\Users\np\Documents\Proyectos\crudIgniter\system\database\DB_driver.php

Line Number: 124

And this is my config

$active_group = 'iscaffold';
$active_record = TRUE;

$db['iscaffold']['hostname'] = $_ENV['DB_HOST'];
$db['iscaffold']['hostname'] = $_ENV['DB_HOST'];
$db['iscaffold']['username'] = $_ENV['DB_USER'];
$db['iscaffold']['password'] = $_ENV['DB_PASS'];
$db['iscaffold']['database'] = $_ENV['DB_NAME'];

$db['iscaffold']['dbdriver'] = 'sqlsrv';
$db['iscaffold']['dbprefix'] = '';
$db['iscaffold']['pconnect'] = TRUE;
$db['iscaffold']['db_debug'] = TRUE;
$db['iscaffold']['cache_on'] = FALSE;
$db['iscaffold']['cachedir'] = '';
$db['iscaffold']['char_set'] = 'utf8';
$db['iscaffold']['dbcollat'] = 'utf8_general_ci';
$db['iscaffold']['swap_pre'] = '';
$db['iscaffold']['autoinit'] = TRUE;
$db['iscaffold']['stricton'] = FALSE;

And the environment is IIS 10 php 7.0.2 for windows and the driver is php_sqlsrv_7_nts_x64.dll

Thank you
Cheers

[nkpin]

I fix the problem.

In the file sqlsrv_driver.php line 88 the method db_pconnect not return nothing