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File Uploading Class


* File Uploading Class :-

  •  CodeIgniter's File Uploading Class permits files to be uploaded. You can set various preferences, restricting the type and size of the files.

 Uploading a file involves the following general process :-

  • An upload form is displayed, allowing a user to select a file and upload it.
  • When the form is submitted, the file is uploaded to the destination you specify.
  • Along the way, the file is validated to make sure it is allowed to be uploaded based on the preferences you set.
  • Once uploaded, the user will be shown a success message.

Example :

  Step 1 :  First, we make controller, create a file name "upload.php"   Create a file    at application/controllers/ with the following code. <?php class Upload extends CI_Controller { function __construct() { parent::__construct(); $this->load->helper(array('form', 'url')); } function index() { $this->load->view('upload_form', array('error' => ' ' )); } function do_upload() { $config['upload_path'] = './uploads/'; $config['allowed_types'] = 'gif|jpg|png'; $config['max_size'] = '100'; $config['max_width'] = '1024'; $config['max_height'] = '768'; $this->load->library('upload', $config); if ( ! $this->upload->do_upload()) { $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); } } } ?>   Step 2:  Create the form at application/views/upload_form.php and add the following code. <html> <head> <title>Upload Form</title> </head> <body> <?php echo $error;?> <?php echo form_open_multipart('upload/do_upload');?> <input type="file" name="userfile" size="20" /> <br /><br /> <input type="submit" value="upload" /> </form> </body> </html>   Step 3:  Create the form at application/views/upload_success.php  and add the following code. <html> <head> <title>Upload Form</title> </head> <body> <h3>Your file was successfully uploaded!</h3> <ul> <?php foreach ($upload_data as $item => $value):?> <li><?php echo $item;?>: <?php echo $value;?></li> <?php endforeach; ?> </ul> <p><?php echo anchor('upload', 'Upload Another File!'); ?></p> </body> </html>



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