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File Uploading Concept in CI:-

It is used to upload external content in an application.

The file is a collection of records that is used to store data under computer harddisk.


CI provides Upload Library to upload data.


Step1st:-

Create a Controller to upload a file and create a view and load view under the controller method.


Step2nd:-

Create Folder under project under application


Step3rd:-

Create action method do_upload() and write file uploading script


Step4th:-

Run application to change config.php



Code of Controller

<?php
class FileUpload extends CI_Controller
{
    function index()
    {

       $this->load->view('fileview');
    }

  function do_upload()
   {

      $config['upload_path'] = './upload/';
      $config['allowed_types']        = 'gif|jpg|png';

       $this->load->library('upload', $config);

        if (!$this->upload->do_upload('userfile'))

           {

                   $data['res']=$this->upload->display_errors();

           }

          else

           {

                   $data['res']="uploading sucessfully";

           }
           $this->load->view('fileview',$data);
    }

}




?>
Code of View:-

<html>
<head>
<title>Upload Form</title>
</head>
<body>



<?php echo form_open_multipart('fileupload/do_upload');?>

<input type="file" name="userfile" size="20" />

<br /><br />

<input type="submit" value="upload" />

</form>
<?php
echo @$res;
?>

</body>
</html>



How to upload file under database:-

Create Database and table:-
Create Table imgid int ,imgpath text ,imgdesc text


Create Model

<?php

class Uploadmodel extends CI_Model
{
    function __construct()
    {
    parent::__construct();
    $this->load->database();
    }

    function upload($path,$idesc)
    {
    $res=$this->db->insert('tbl_img',array('imgpath'=>$path,"imgdesc"=>$idesc));
    return $this->db->affected_rows();
    }
    function showfile()
    {
    return $this->db->get('tbl_img')->result_array();
    }


}


?>

and create View file

<?php
for($i=0;$i<count($res);$i++) {?>

<img src="<?php echo base_url().'upload/'.$res[$i]['imgpath'] ?>"  width="100" height="100"/>
<br>
<p><?php echo $res[$i]['imgid']; ?></p>
<?php
}
?>



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