后台出现提示：Warning: Cannot modify header information

[longdarke]

打开后开添加类别，点击save的时候出现了这个提示：
Warning: Cannot modify header information - headers already sent by (output started at /home2/.../categories.php:168) in /home2/.../includes/functions/general.php on line 20
请问这是什么原因呢，有网上有查了相似的问题，说是有多余的空格，但我没发现，而且用别的正常的文件替换也没效果，还请各位zen cart人帮帮忙看看！

[cjcshadow]

相信me 可以帮到你。。。

[longdarke]

相信me 可以帮到你。。。

So 方法是什么呢

[longdarke]

没答案啊？？？

[Jack]

categories.php 第 168 行的问题

[longdarke]

categories.php 第 168 行的问题

categories.php文件168行附近的代码内容如下，第168行是print_r($sql_allow); jack老大帮忙看看啥问题呢

代码: 全选

      $action = "edit";
      zen_redirect(zen_href_link(FILENAME_CATEGORIES, 'action=edit_category&cPath=' . $_GET['cPath'] . '&cID=' . zen_db_prepare_input($_GET['cID'])));
            break;
      case 'setflag':
      if ( ($_GET['flag'] == '0') || ($_GET['flag'] == '1') ) {
        if (isset($_GET['pID'])) {
          zen_set_product_status($_GET['pID'], $_GET['flag']);
        }

      }

      zen_redirect(zen_href_link(FILENAME_CATEGORIES, 'cPath=' . $_GET['cPath'] . '&pID=' . $_GET['pID'] . (isset($_GET['page']) ? '&page=' . $_GET['page'] : '')));
      break;
      case 'insert_category':
      case 'update_category':
      if ( isset($_POST['add_type']) or isset($_POST['add_type_all']) ) {
        // check if it is already restricted
        $sql = "select * from " . TABLE_PRODUCT_TYPES_TO_CATEGORY . "
                where category_id = '" . zen_db_prepare_input($_POST['categories_id']) . "'
                and product_type_id = '" . zen_db_prepare_input($_POST['restrict_type']) . "'";

        $type_to_cat = $db->Execute($sql);
        if ($type_to_cat->RecordCount() < 1) {
          //@@TODO find all sub-categories and restrict them as well.

          $insert_sql_data = array('category_id' => zen_db_prepare_input($_POST['categories_id']),
                                   'product_type_id' => zen_db_prepare_input($_POST['restrict_type']));

          zen_db_perform(TABLE_PRODUCT_TYPES_TO_CATEGORY, $insert_sql_data);
          /*
          // moved below so evaluated separately from current category
          if (isset($_POST['add_type_all'])) {
          zen_restrict_sub_categories($_POST['categories_id'], $_POST['restrict_type']);
          }
          */
        }
        // add product type restrictions to subcategories if not already set
        if (isset($_POST['add_type_all'])) {
          zen_restrict_sub_categories($_POST['categories_id'], $_POST['restrict_type']);
        }
        $action = "edit";
        zen_redirect(zen_href_link(FILENAME_CATEGORIES, 'action=edit_category&cPath=' . $cPath . '&cID=' . zen_db_prepare_input($_POST['categories_id'])));
      }
      if (isset($_POST['categories_id'])) $categories_id = zen_db_prepare_input($_POST['categories_id']);
      $sort_order = zen_db_prepare_input($_POST['sort_order']);

      $sql_data_array = array('sort_order' => (int)$sort_order);

      if ($action == 'insert_category') {
        $insert_sql_data = array('parent_id' => $current_category_id,
                                 'date_added' => 'now()');

        $sql_data_array = array_merge($sql_data_array, $insert_sql_data);

        zen_db_perform(TABLE_CATEGORIES, $sql_data_array);
       
        $categories_id = zen_db_insert_id();
       
        // BOF - Admin Profile's Categories
        // automatically add permission for current user on category he has just created
        $sql_allow = array('categories_id' => $categories_id,
                           'admin_id' => $_SESSION['admin_id']);
       print_r($sql_allow);
        zen_db_perform(TABLE_ADMIN_ALLOWED_CATEGORIES, $sql_allow);                   
        // EOF - Admin Profile's Categories
       
        // check if [arent is restricted
        $sql = "select parent_id from " . TABLE_CATEGORIES . "
                where categories_id = '" . $categories_id . "'";
       
        $parent_cat = $db->Execute($sql);
        if ($parent_cat->fields['parent_id'] != '0') {
          $sql = "select * from " . TABLE_PRODUCT_TYPES_TO_CATEGORY . "
                  where category_id = '" . $parent_cat->fields['parent_id'] . "'";
          $has_type = $db->Execute($sql);
          if ($has_type->RecordCount() > 0 ) {
            while (!$has_type->EOF) {
              $insert_sql_data = array('category_id' => $categories_id,
                                       'product_type_id' => $has_type->fields['product_type_id']);
              zen_db_perform(TABLE_PRODUCT_TYPES_TO_CATEGORY, $insert_sql_data);
              $has_type->moveNext();
            }
          }
        }
      } elseif ($action == 'update_category') {
        $update_sql_data = array('last_modified' => 'now()');

        $sql_data_array = array_merge($sql_data_array, $update_sql_data);

        zen_db_perform(TABLE_CATEGORIES, $sql_data_array, 'update', "categories_id = '" . (int)$categories_id . "'");
      }

      $languages = zen_get_languages();

[Jack]

print_r($sql_allow); 这行应该没用吧，要注释了：
// print_r($sql_allow);

[longdarke]

print_r($sql_allow); 这行应该没用吧，要注释了：
// print_r($sql_allow);

多谢 jack老大了 终于解决了