使用php codeigniter上传图片的问题

Question

I have some problem in image uploading with php codeigniter.

this is my controller

 public function FunctionName()
  {

        $profile_pic  = $this->input->post('profile_pic');
        echo $profile_pic;         

  }

It is a simple function and I just want to see the name of the file (image) which I select.

this is my view

<form class="" method="post" action="<?=base_url();?>Controller/FunctionName" enctype="multipart/form-data">

    <input type="file" name="profile_pic">

    <input type="submit" name="submit">

    </form>

When I run this script. It shows me a blank page. I cannot get/display the name of the file which I selected. Note that I have auto-loaded the helper. E.g.

$autoload['helper'] = array('url', 'file', 'date', 'form');

Answer 1

$file=$_FILES['file_name']['name'];
$config =         array('file_name'=>$file,
                        'upload_path' => "./folder/",
                        'allowed_types' => "jpg|jpeg|png",
                        'remove_spaces' => FALSE,
                        'overwrite' => TRUE
                                        );

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