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
<?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
<?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'];
$this->currency = $fields['currency'];
$this->price = $fields['price'];
}
public function getCurrency()
{
return $this->currency;
}
public function getManufacturer()
{
return $this->manufacturer;
}
public function getPrice()
{
return $this->price;
}
public function getTitle()
{
return $this->title;
}
}
Product.php
<?php
include_once 'BaseItem.php';
class Product extends BaseItem
{
protected $productName;
protected $manufacturer;
protected $family;
protected $model;
protected $announcedDate;
/**
* @inheritDoc
*/
public function buildFromArray(array $fields)
{
$this->productName = $fields['product_name'];
$this->manufacturer = $fields['manufacturer'];
$this->family = isset($fields['family']) ? $fields['family'] : null;
$this->model = $fields['model'];
$this->announcedDate = $fields['announced-date'];
}
/**
* @inheritDoc
*/
public function convertToArray()
{
return array(
'product_name' => $this->productName,
'manufacturer' => $this->manufacturer,
'family' => $this->family,
'model' => $this->model,
'announced-date' => $this->announcedDate,
);
}
public function getAnnouncedDate()
{
return $this->announcedDate;
}
public function getFamily()
{
return $this->family;
}
public function getManufacturer()
{
return $this->manufacturer;
}
public function getModel()
{
return $this->model;
}
public function getProductName()
{
return $this->productName;
}
}
?>
ProListMatcher.php
<?php
include './model/Product.php';
include './model/Listing.php';
include './model/BaseItem.php';
class ProListMatcher
{
const TYPE_PRODUCT = 1;
const TYPE_LISTING = 2;
/** @var Product[] */
protected $products;
/** @var Listing[] */
protected $listings;
/**
* @param array $products
* @param array $listings
*/
public function __construct(array $products, array $listings)
{
$this->products = $this->normalizeRawData($products, self::TYPE_PRODUCT);
$this->listings = $this->normalizeRawData($listings, self::TYPE_LISTING);
}
/**
* Matches up listings to products
*
* @return array
*/
public function getMatches()
{
$ret = array();
// loop through all products
foreach ($this->products as $product) {
// reset matching listings
$matchingListings = array();
// loop through all listings
foreach ($this->listings as $key => $listing) {
$matches = 0;
// match on manufacturer
if (strtolower($product->getManufacturer()) == strtolower($listing->getManufacturer())) {
$matches++;
}
// match on model in listing title
$result = strpos(strtolower($listing->getTitle()), strtolower($product->getModel()));
if (false !== $result) {
$matches++;
}
if (2 === $matches) {
$matchingListings[] = $listing;
// has been matched, remove listing from future searches
unset($this->listings[$key]);
}
}
if (count($matchingListings)) {
// 1 or more matches were found, add to output
$ret[] = array(
'product' => $product,
'listings' => $matchingListings
);
}
}
return $ret;
}
/**
* Convert plain nested array to array of objects
*
* @param array $data
* @param int $type
* @return array
* @throws \InvalidArgumentException
*/
protected function normalizeRawData(array $data, $type)
{
// build model for each item
return array_map(function($value) use ($type) {
switch ($type) {
case ProListMatcher::TYPE_PRODUCT:
return new Product($value);
case ProListMatcher::TYPE_LISTING:
return new Listing($value);
default:
throw new \InvalidArgumentException(sprintf('Type "%s" is not valid', $type));
}
},
$data
);
}
}
Match.php
<?php
include './model/Listing.php';
include 'ProListMatcher.php';
if($argc != 3){
die("Usage: Match.php <Products> <Listing>");
}
array_shift($argv);
/**
* @param string $data
* @return array
*/
function jsonToArray($value){
$ret = explode("\n", trim($value));
return array_map(function($value){
return json_decode($value, true);
}, $ret);
}
$matcher = new ProListMatcher(
jsonToArray(file_get_contents($argv[0])),
jsonToArray(file_get_contents($argv[1])));
$matches = $matcher->getMatches();
$matches = array_map(function($value){
return json_encode(array(
'product_name' => $value['product']->getProductName(),
'listing' => array_map(function(Listing $value){
return $value->convertToArray();
}, $value['listing'])
)
);
}, $matches
);
$output = fopen("output.txt", "w+");
file_put_contents($output, implode("\n", $matches));
fclose($output);
?>
这是我的代码，然后我在terminal运行:
chrisfus-MacBook-Pro:test chrisfu$ php Match.php products.txt listings.txt
PHP Fatal error: Cannot redeclare class Listing in /Users/chrisfu/Sites/test/model/Listing.php on line 53
Fatal error: Cannot redeclare class Listing in /Users/chrisfu/Sites/test/model/Listing.php on line 53
为什么会出现这样的错误，我没有两个叫Listing的 class，请大家帮忙看看，程序都贴上去了，大家可以运行试试。
[解决办法]
Match.php 中有
include './model/Listing.php';
include 'ProListMatcher.php';
ProListMatcher.php 中有
include './model/Product.php';
include './model/Listing.php';
include './model/BaseItem.php';
class Listing 不是被重复定义了吗？