Question

这是我的代码： -

 try
        {
            $cur_category = array();
            $category = Mage::getModel('catalog/category');
            $tree = $category->getTreeModel();
            $tree->load();
            $ids = $tree->getCollection()->getAllIds();
            if ($ids)
            {
                foreach ($ids as $id)
                {
                    $cat = Mage::getModel('catalog/category');
                    $cat->load($id);
                    $node["category_id"] = $cat->getId();
                    $node["name"] = $cat->getName();
                    $node["image_url"] = $cat->getImageUrl();
                    $cur_category[] = $node;

                }
                
            }

            echo json_encode($cur_category); 
        }catch (Exception $e){
            $message = $e->getMessage();
            echo json_encode(array("status" => "500", "error" => $message));
        }

代码的输出是： -

[{"category_id":"1","name":"Root Catalog","image_url":false},{"category_id":"2","name":"Electronics","image_url":"http:\/\/localhost:81\/magento\/media\/catalog\/category\/Apple-MGX92HN-A-MacBook-Pro-SDL150017386-1-c0afa.jpg"},{"category_id":"3","name":"Laptops","image_url":false},{"category_id":"4","name":"Men","image_url":false},{"category_id":"5","name":"Women","image_url":false},{"category_id":"6","name":"Baby & Kids","image_url":false},{"category_id":"7","name":"Home & Furniture","image_url":false},{"category_id":"8","name":"Accessories","image_url":false},{"category_id":"9","name":"Formal Mens Jeans","image_url":false}]null

问题是最终的，因为你可以看到null即将发布如何删除任何建议。

Answer 1

如果我理解正确，你在json对象里面的所有数据都在方括号[]里面？所以，如果没有什么遗漏。我建议只从json_encode($cur_category)解析你的返回字符串。为了快速查看，我认为您的$cur_category最后确实有一个空的[]行，因此返回null

我的主要观点是使用解析结果字符串，并确保$cur_category没有空行。

使用

捕捉阵列

echo(print_f($cur_category,true));

在json输出结束时获取null

1 个答案: