请大家帮忙看看问题
程序是要输入两个json格式的txt文件，然后通过匹配两个文件的相同的index，然后输出一个新的json格式的txt文件。 比如：
这是输入的两个文件的格式：
1. Product
{
"product_name": String // A unique id for the product
"manufacturer": String
"family": String // optional grouping of products
"model": String
"announced-date": String // ISO-8601 formatted date string, e.g. 2011-04-28T19:00:00.000-05:00
}
2. Listing
{
"title": String // description of product for sale
"manufacturer": String // who manufactures the product for sale
"currency": String // currency code, e.g. USD, CAD, GBP, etc.
"price": String // price, e.g. 19.99, 100.00
}
输出的文件格式为：
{
"product_name": String
"listings": Array[Listing]
}
先上代码：
BaseItem.php
abstract class BaseItem
{
/**
* @param array $fields
*/
public function __construct(array $fields)
{
$this->buildFromArray($fields);
}
/**
* @param array $fields
*/
abstract public function buildFromArray(array $fields);
/**
* @return array
*/
abstract public function convertToArray();
}
?>
Listing.php
include_once 'BaseItem.php';
class Listing extends BaseItem
{
protected $title;
protected $manufacturer;
protected $currency;
protected $price;
/**
* @inheritDoc
*/
public function convertToArray()
{
return array(
'title' => $this->title,
'manufacturer' => $this->manufacturer,
'currency' => $this->currency,
'price' => $this->price,
);
}
/**
* @inheritDoc
*/
public function buildFromArray(array $fields)
{
$this->title = $fields['title'];
$this->manufacturer = $fields['manufacturer'];
