照片名稱字段始終爲空

Question

我有一個窗體可以編輯數據庫中的幾個字段，並且我有一個字段可以上傳照片。所有文本字段在數據庫中更新，除了圖像字段，照片名稱始終爲空，我不知道爲什麼！該參數始終爲空：$ profile_img。任何人都可以幫助我。我正在使用CodeIgniter。感謝 這是我的控制器：

function superadmin_landing_content_edit() { 

     $content_id = $this->uri->segment(4); 

     if (empty($_FILES['content_img']['name'])) 
     { 
      $this->form_validation->set_rules('content_img', 'Image', 'required'); 
     } 

     if (isset($_POST) && !empty($_POST)) 
     { 
      if(isset($_FILES["content_img"]["name"]) and !empty($_FILES["content_img"]["name"])) { 

       $config['upload_path'] = $this->config->config["public_path"]."landing/"; 
       $config['allowed_types'] = 'gif|jpg|png'; 
       $config['max_size'] = '20000000'; 
       $config['max_width'] = '2024'; 
       $config['max_height'] = '2024'; 
       $this->load->library('upload'); 

       $this->upload->initialize($config); 
       $result = $this->upload->do_upload('content_img'); 
       if($result>=1) { 
       $imageinfo = $this->upload->data(); 
       $profile_img = $imageinfo["file_name"]; 
       $profile_img = $profile_img."*".'/var/www/html/upload/home/landing/'.$profile_img; //always null 
      } 

     } 
      $data = array(
       'name'     => $this->input->post('name'), 
       'image_link'   => $profile_img, //here always null 
       'type'    => $this->input->post('type'), 
       'link'    => $this->input->post('link'), 
       'property_type_id'  => $this->input->post('prop_id'), 
       'orientation_id'  => $this->input->post('ori_id'), 
       'state_id'   => $this->input->post('state'), 
       'city_id'   => $this->input->post('city'), 
       'flag'    => $this->input->post('flag'), 


      ); 


      if ($this->form_validation->run() === true) 
      { 
       $this->Admin_model->update_landing_content($content_id, $data); 


      } 
     } 


     $this->load->view('admin/superadmin_landing_content_edit', $data); 
} 

這裏是我的看法：

<?php $content_id = $content['id']; ?> 
<?php $attributes = array("name" => "content_img_edit", "id" => "content_img_edit", "class" => "edit_view","method" => "post"); 
echo form_open_multipart("admin/admin/superadmin_landing_content_edit/".$content_id, $attributes); ?>  

<div class="form-group"> 
    <label>Image</label> 
    <?php echo form_upload(array("id"=>"content_img", "name"=>"content_img", "class"=>"form-control"))?> 
</div> 

<div class="form-group"> 
    <?php echo form_submit('submit', 'Submit', 'class="btn btn-default"');?> 
    <input type="button" name="btnBack" class="btn btn-default" id="btnBack" value="Landing Content List" onclick="window.location.href='<?php echo base_url() ?>admin/admin/superadmin_landing_content_list'" /> 
</div> 
<?php echo form_close(); ?> 

Answer 1

嘗試更換

$result = $this->upload->do_upload('content_img'); 
    if($result>=1) { 

隨着

if (!$this->upload->do_upload('content_img')){ 
    $error = $this->upload->display_errors(); 
    } else { 
    $data = $this->upload->data(); 
    } 

Answer 2

Try like this one: 

Controller: 

if(!empty($_FILES['content_image']['name'])) 
     { 
      // file upload code start 
      $config['upload_path'] ='./uploads/'; //file or image upload folder 
      $config['allowed_types'] = 'jpg|jpeg|png|gif'; 
      $this->load->library('upload', $config); 
      $this->upload->initialize($config); 
      if (!$this->upload->do_upload('content_image')) 
      { 
      echo $this->upload->display_errors(); 
      return false; 
      } 
      else 
      { 
       $upload_data = $this->upload->data('content_image'); 
       $content_image = $upload_data['file_name']; 
       $data = array('content_image'=>$content_image, 
       ); 
       //$this->db->where('id',$id)->update('student',$data); 
      } 
     }