Codeigniter上传图片选择

Question

I have a form including different inputs and file upload input. I want the users if they want to upload images then upload, but if they don't want to upload. Don't give an error.

if($_POST){         
    $config['upload_path']          = 'images/tmp';
    $config['allowed_types']        = 'gif|jpg|png';
    $config['max_size']             = 2048;
    $config['min_width']            = 480;
    $config['min_height']           = 360;

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

    if (!$this->upload->do_upload('userfile')) {
        $error = array('error' => $this->upload->display_errors());
        //Sending this $error to view and if a user didnt upload image and just filled
        //the other inputs it shows error. but i dont want that.
    } else { }
} else {
    redirect(site_url());
}

Answer 1

You are on right track. Just delete or comment this line

$error = array('error' => $this->upload->display_errors());

You might be send your $error to view file like below:

$this->load->view('upload_form', $error);

So Don't send your value to view file. Just call your view when image successfully uploaded below:

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

                // $error = array('error' => $this->upload->display_errors());
                /*Delete or comment this line. Do your other stuff here if image not uploaded.*/

            }else{
                   $data = array('upload_data' => $this->upload->data());
                   $this->load->view('upload_success', $data);
                   /* This is example. You can do anything on successfully image upload.*/
            }

You can refer codeigniter manual https://www.codeigniter.com/userguide3/libraries/file_uploading.html