How to get the uploaded filename from upload.php page Codeigniter - codeigniter

Question

I have Upload.php page as follows=>
<?php
class Upload extends CI_Controller {
public function __construct() {
parent::__construct();
$this->load->helper(array('form', 'url'));
}
public function index() {
$this->load->view('upload_form', array('error' => ' ' ));
}
public function do_upload() {
$config['upload_path'] = './uploads/';
$config['allowed_types'] = 'gif|jpg|png|pgn';
$config['max_size'] = 0;
//$config['max_width'] = 1024;
//$config['max_height'] = 768;
$config['detect_mime'] = TRUE;
$this->load->library('upload', $config);
if ( ! $this->upload->do_upload('userfile')) {
$error = array('error' => $this->upload->display_errors());
$this->load->view('upload_form', $error);
}
else {
$data = array('upload_data' => $this->upload->data());
$this->load->view('upload_success', $data);
}
}
}
?>
and the Hesaplama.php controller as =>
$upload_data = $this->upload->data(); //(line 51) Should return array of containing all of the data related to the file you uploaded.
$file_name = $upload_data['file_name'];
$file = fopen("<?php echo site_url('uploads/$file_name'); ?>", "r");
while(! feof($file))
{...
However I get the following error =>
A PHP Error was encountered
Severity: Notice
Message: Undefined property: Hesaplama::$upload
Filename: controllers/Hesaplama.php
Line Number: 51
Backtrace:
File: D:\wamp\www\proje\application\controllers\Hesaplama.php
Line: 51
Function: _error_handler
File: D:\wamp\www\proje\application\controllers\Hesaplama.php
Line: 249
Function: pgn_oku
File: D:\wamp\www\proje\application\controllers\Welcome.php
Line: 28
Function: pozisyon_tutma
File: D:\wamp\www\proje\index.php
Line: 292
Function: require_once
How can we remedy that and get the file name of the newly uploaded file?
I personally think that the program does not recognize the data in another page(controller).
Thank you...

Answer 1

Sorry i can't comment yet, so i write it here. I think the library for
$this->upload->data();
wasn't loaded.
if you want to get only the filename, maybe you can try using session.
in Upload controller:
$data = $this->upload->data();
$this->session->set_userdata('filename', $data['file_name']);
in Hesaplama :
$filename = 'uploads/'.$this->session->userdata('filename');
$file = fopen("<?php echo site_url('$filename'); ?>", "r");
hope this help.

Answer 2

to get the filename and extention file to save it in a db you can use tis
<?php
class Upload extends CI_Controller {
public function __construct() {
parent::__construct();
$this->load->helper(array('form', 'url'));
}
public function index() {
$this->load->view('upload_form', array('error' => ' ' ));
}
public function do_upload() {
$config['upload_path'] = './uploads/';
$config['allowed_types'] = 'gif|jpg|png|pgn';
$config['max_size'] = 0;
$config['detect_mime'] = TRUE;
$this->load->library('upload', $config);
if( ! $this->upload->do_upload('userfile')) {
$error = array('error' => $this->upload->display_errors());
$this->load->view('upload_form', $error);
}
else {
$upload_data = $this->upload->data();
/*
Array
(
[file_name] => mypic.jpg
[file_type] => image/jpeg
[file_path] => /path/to/your/upload/
[full_path] => /path/to/your/upload/jpg.jpg
[raw_name] => mypic
[orig_name] => mypic.jpg
[client_name] => mypic.jpg
[file_ext] => .jpg
[file_size] => 22.2
[is_image] => 1
[image_width] => 800
[image_height] => 600
[image_type] => jpeg
[image_size_str] => width="800" height="200"
)
*/
$this->model->save_img_info($upload_data['file_name']);
$data = array('upload_data' => $upload_data );
$this->load->view('upload_success', $data);
}
}
}
?>