codeigniter - How to import data from excel to mysql database using php -

i using phpexcel import xlsx file related database. while running function getting error. code looks shown below.

controller:

   <?php    if (!defined ('basepath')) exit ('no direct access allowed');       class excelcontroller extends ci_controller       {         public function index()       {           //load library excel           $this->load->library('excel');            //here used microsoft excel 2007           $objreader= phpexcel_iofactory::createreader('excel2007');            //set read           $objreader->setreaddataonly(true);             //load excel file           $objphpexcel=$objreader->load('data.xls'); // error in line           $objworksheet=$objphpexcel->setactivesheetindex(0);            //load model            $this->load->model('user_model');            //loop first data untill last data           for($i=2;$i<=77;$i++)           {               $name= $objworksheet->getcellbycolumnandrow(0,$i)->getvalue();               $address= $objworksheet->getcellbycolumnandrow(1,$i)->getvalue();                $data_user=array('name'=>$name, 'username'=>$address);                $this->user_model->add_data($data_user);           }        }     }               ?> 

model:

 <?php if (!defined ('basepath')) exit ('no direct access allowed');     class user_model extends ci_controller {     public function __construct() {         parent::__construct();     }      public function add_data($data_user)     {         $this->load->database();          $this->db->insert('data',$data_user);         return $this->db->insert_id();      } }  ?> 

error in code:

fatal error: uncaught exception 'phpexcel_reader_exception' message 'could not open data.xls reading! file not exist.' in c:\xampp\htdocs\ci_excel\application\third_party\phpexcel\reader\excel2007.php:347 stack trace: #0 c:\xampp\htdocs\ci_excel\application\controllers\excelcontroller.php(19): phpexcel_reader_excel2007->load('data.xls') #1 [internal function]: excelcontroller->index() #2 c:\xampp\htdocs\ci_excel\system\core\codeigniter.php(359): call_user_func_array(array, array) #3 c:\xampp\htdocs\ci_excel\index.php(202): require_once('c:\xampp\htdocs...') #4 {main} thrown in c:\xampp\htdocs\ci_excel\application\third_party\phpexcel\reader\excel2007.php on line 347 

judging error message , comment, looks using incorrect filepath.

$objphpexcel=$objreader->load('data.xls'); 

in codeigniter paths relative entry script, index.php.

use relative file path location or alternatively absolute path.