codeigniter錯誤消息：無法修改標頭信息 - 已由

-1

發送的標頭

即使我將某些東西插入到數據庫中，但它會導致數據錯誤但我收到此錯誤時會出現此錯誤消息：無法修改標頭信息 - 標頭已由（輸出開始在項目/應用/控制器/ add_products.php：79）codeigniter錯誤消息：無法修改標頭信息 - 已由

function do_upload() { 
     $config['upload_path'] = './assets/'; 
     $config['allowed_types'] = 'gif|jpg|png'; 
     $config['max_size'] = '2000'; 
     $config['max_width'] = '2000'; 
     $config['max_height'] = '2000'; 
     $config['new_image'] = './assets/'; 

     $config['overwrite'] = TRUE; 
     $this->load->library('upload', $config); 
     $this->form_validation->set_rules('name', 'Product Name', 'required|xss_clean'); 
     $this->form_validation->set_rules('description', 'Product Description', 'required|xss_clean'); 
     $this->form_validation->set_rules('price', 'Price', 'required'); 
     if (!$this->upload->do_upload() || !$this->form_validation->run()) { 
      $error = array('error' => $this->upload->display_errors()); 
      redirect('add_products'); 
     } else { 

      $data = $this->upload->data(); 
      $this->thumb($data); 

      $category = $_POST["prod_category"]; 
      if($category == "2") 
       { 
     $category = $_POST["other_category"]; 
      } 
      $file = array(
       'img_name' => $data['raw_name'], 
       'thumb_name' => $data['raw_name'] . '_thumb', 
       'ext' => $data['file_ext'], 
       'product_name' => $this->input->post('name'), 
       'product_description' => $this->input->post('description'), 
       'product_price' => $this->input->post('price'), 
       'product_category' =>$category,  


      ); 

      // $this->db->insert("product_category",array("category"=>$category)); 
      $query = 'INSERT INTO product_category (id , category) VALUES (? , ?) 
      ON DUPLICATE KEY UPDATE category=VALUES(category)'; 



       $this->User->insert_prod($file); 
      $data = array('upload_data' => $this->upload->data()); 
      echo '<script>alert("You Have Successfully Added a new Product!");</script>';  
      redirect('admin_products','refresh'); 
      $this->load->view('admin_products'); 

     } 
    }

來源

2016-02-09 Christian

可能的複製[如何解決「頭已經發送」錯誤在PHP（ http://stackoverflow.com/questions/8028957/how-to-fix-headers-already-sent-error-in-php） – Qirel

刪除線

echo '<script>alert("You Have Successfully Added a new Product!");</script>';

來源

2016-02-09 05:07:26

放ob_start（）; ？第一< PHP線後使你的代碼應該是：

<?php 
ob_start();

將打開輸出緩衝

的

來源

2018-02-27 06:27:08

codeigniter錯誤消息：無法修改標頭信息 - 已由

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