A PHP Error was encountered

Severity: Warning

Message: mkdir(): Invalid path

Filename: drivers/Session_files_driver.PHP

Line Number: 117

Backtrace:

File: C:\xampp\htdocs\ci-test\application\controllers\login.PHP
Line: 7
Function: __construct

File: C:\xampp\htdocs\ci-test\index.PHP
Line: 292
Function: require_once

以下是要设置会话数据的代码.

$sess_array = array(
         'id' => 1,'username' => 'bikramkc.kc@gmail.com'
       );
$this->session->set_userdata($sess_array);