在codeigniter中上传图像给出错误

Question

我在我的表单中上传了一张图片，但它总是给我一个错误，比如

“遇到 PHP 错误 严重性：通知消息： 未定义索引：vimage 文件名：controllers/vouchers.php 行 编号：42"

我的查看文件代码：

<?php echo form_open_multipart(site_url("promotions/add_item/"), array("class" => "form-horizontal","id"=>"addItem")) ?>
                            <div class="form-group">
                              <label class="col-sm-3 control-label">Show on</label>
                              <div class="col-sm-3">
                                Artist Directory : <input type="checkbox" name="artist_dir" value='1'>
                              </div>  
                              <div class="col-sm-3">
                                Highlight : <input type="checkbox" name="highlight" value='1'>
                              </div>
                            </div>
                        
                            <div class="form-group">
                              <label class="col-sm-3 control-label">Title</label>
                              <div class="col-sm-9">
                                <input type="text" class="form-control" name="title" id="title" placeholder="Title">
                              </div>
                            </div>
                             <div class="form-group">
                              <label class="col-sm-3 control-label">Image</label>
                              <div class="col-sm-9">
                                  <input type="file" name="pro_image">
                              </div>
                            </div>
                            <div class="form-group">
                              <label class="col-sm-3 control-label">Description</label>
                              <div class="col-sm-9">
                                  <textarea class="form-control" rows="3" name="description" placeholder="Description"></textarea>
                              </div>
                            </div>
                            <div class="form-group">
                              <div class="col-sm-offset-3 col-sm-9">
                                  <button type="submit" class="btn btn-success" name="submit" id="submit">Submit</button>
                              </div>
                            </div>
                          
                        <?php echo form_close() ?>

我的控制器代码：

<pre>
 public function add_item(){
        
            $this->load->library('upload');
             
            $this->form_validation->set_rules('title','Title','required');
            $this->form_validation->set_rules('description','Description','required');
            
            print_r($_FILES['pro_image']); 
            if ($_FILES['pro_image']['size'] > 0) {
                    $this->upload->initialize(array( 
                    "upload_path" => './uploads/',
                    "overwrite" => FALSE,
                    "encrypt_name" => TRUE,
                    "remove_spaces" => TRUE,
                    "allowed_types" => "gif|jpg|png|jpeg",
                ));


                 if (!$this->upload->do_upload('vimage')) {
                     $this->upload->display_errors();
                 }

                 $data = $this->upload->data();
                 echo 'img : '.$img = $data['file_name'];
            } 
            exit;
            
            if($this->form_validation->run()==FALSE){
                echo '<div class="alert alert-dismissable alert-danger"><button type="button" class="close" data-dismiss="alert" aria-hidden="true">×</button><small>'.  validation_errors().'</small></div>';
            }
            else {
                $title = $this->input->post('title');
                $description = $this->input->post('description');
                $artist_dir = $this->input->post('artist_dir');
                $highlight = $this->input->post('highlight');
                $this->promotions_model->add_item($title, $description,$artist_dir,$highlight);
            }
    }
    </pre>

请让我知道我在这里做错了什么

Answer 1

试试这个

  if ($_FILES['vimage']['size'] > 0) {
    $this->load->library('upload');
     $this->upload->initialize($this->set_upload_options());
                    $this->upload->do_upload();
                    $fileName = $_FILES['vimage']['name'];

    private function set_upload_options()
      { 
      // upload an image options
             $config = array();
             $config['upload_path'] = './upload/'; //give the path to upload the image in folder
             $config['allowed_types'] = 'gif|jpg|png';
              $config['max_size'] = '0';
             $config['overwrite'] = FALSE;
      return $config;
      }

更多信息请阅读Link

Answer 2

试试这个

if (!empty($_FILES['vimage']))
{
    $config['upload_path'] = './uploads/';
    //$config['max_size'] = '102400';
    $config['allowed_types'] = 'gif|jpg|png|jpeg';
    $config['overwrite'] = FALSE;
    $config['remove_spaces'] = TRUE;
    $config['encrypt_name'] = TRUE;

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

    if (!$this->upload->do_upload('vimage'))
    {
        $this->session->set_flashdata('error', $this->upload->display_errors());
        //redirect('controller/method');
    }
    else
    {
        $this->session->set_flashdata('success', 'Image Has been Uploaded');
        //redirect('controller/method');
        $img = $data['file_name'];
    }

}

Answer 3

请先检查，

print_r(_FILES);

如果你得到文件数组，那么你可以使用下面的代码来上传图片。

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';

// You can give Image formats if you want to upload any video file.

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

if ( ! $this->upload->do_upload())
{
$error = array('error' = $this->upload->display_errors());

// uploading failed. $error will holds the errors.
}
else
{
$data = array('upload_data' => $this->upload->data());

// uploading successfull, now do your further actions
}
}

Answer 4

我已经在我的系统中添加了你的代码，它对我来说很好。

public function add(){
        $this->load->library('upload');
        $this->load->helper('form');
        $this->load->helper('url');
         print_r($_FILES);die; 

            $this->form_validation->set_rules('title','Title','required');
            $this->form_validation->set_rules('description','Description','required');


            if ($_FILES['pro_image']['size'] > 0) {
                    $this->upload->initialize(array( 
                    "upload_path" => './uploads/',
                    "overwrite" => FALSE,
                    "encrypt_name" => TRUE,
                    "remove_spaces" => TRUE,
                    "allowed_types" => "gif|jpg|png|jpeg",
                ));


                 if (!$this->upload->do_upload('vimage')) {
                     $this->upload->display_errors();
                 }

                 $data = $this->upload->data();
                 echo 'img : '.$img = $data['file_name'];
            } 
            exit;

            if($this->form_validation->run()==FALSE){
                echo '<div class="alert alert-dismissable alert-danger"><button type="button" class="close" data-dismiss="alert" aria-hidden="true">×</button><small>'.  validation_errors().'</small></div>';
            }
            else {
                $title = $this->input->post('title');
                $description = $this->input->post('description');
                $artist_dir = $this->input->post('artist_dir');
                $highlight = $this->input->post('highlight');
                $this->promotions_model->add_item($title, $description,$artist_dir,$highlight);
            }


    }