PHP项目0x与订单簿

本文目录导读：

1. 核心数据结构
2. 订单簿管理类
3. 0x协议集成
4. 价格聚合器
5. 使用示例

我来帮你创建PHP项目中关于"0x"协议与订单簿交互的实现方案。

核心数据结构

<?php
// Order.php - 订单实体类
class Order {
    public string $maker;          // 做市商地址
    public string $taker;          // 吃单方地址
    public string $makerToken;     // 做市代币地址
    public string $takerToken;     // 吃时代币地址
    public string $makerAmount;    // 做市数量
    public string $takerAmount;    // 吃单数量
    public int $expiryTimestamp;   // 过期时间戳
    public string $salt;           // 随机数
    public string $signature;      // 签名
    public function __construct(array $data = []) {
        foreach ($data as $key => $value) {
            if (property_exists($this, $key)) {
                $this->$key = $value;
            }
        }
    }
    public function toArray(): array {
        return get_object_vars($this);
    }
    public function toEIP712Format(): array {
        return [
            'maker' => $this->maker,
            'taker' => $this->taker,
            'makerToken' => $this->makerToken,
            'takerToken' => $this->takerToken,
            'makerAmount' => $this->makerAmount,
            'takerAmount' => $this->takerAmount,
            'expiryTimestamp' => $this->expiryTimestamp,
            'salt' => $this->salt
        ];
    }
}

订单簿管理类

<?php
// OrderBook.php - 订单簿管理
class OrderBook {
    private array $bids = [];       // 买单列表
    private array $asks = [];       // 卖单列表
    private array $orders = [];     // 所有订单
    private PDO $db;
    public function __construct(PDO $db) {
        $this->db = $db;
        $this->loadOrders();
    }
    // 添加订单
    public function addOrder(Order $order): bool {
        $orderId = $this->generateOrderId($order);
        // 验证订单
        if (!$this->validateOrder($order)) {
            return false;
        }
        // 检测是否可立即成交
        $matchedOrders = $this->findMatches($order);
        if (!empty($matchedOrders)) {
            $this->executeMatches($order, $matchedOrders);
            return true;
        }
        // 添加到订单簿
        $this->orders[$orderId] = $order;
        // 根据价格方向分类
        if ($this->isBid($order)) {
            $this->bids[$orderId] = $order;
            krsort($this->bids); // 高价优先
        } else {
            $this->asks[$orderId] = $order;
            ksort($this->asks); // 低价优先
        }
        // 持久化
        $this->saveOrder($order);
        return true;
    }
    // 取消订单
    public function cancelOrder(string $orderId): bool {
        if (!isset($this->orders[$orderId])) {
            return false;
        }
        $order = $this->orders[$orderId];
        // 从内存中移除
        unset($this->orders[$orderId]);
        unset($this->bids[$orderId]);
        unset($this->asks[$orderId]);
        // 更新数据库状态
        $this->updateOrderStatus($orderId, 'cancelled');
        return true;
    }
    // 查找匹配订单
    private function findMatches(Order $order): array {
        $matches = [];
        if ($this->isBid($order)) {
            // 买单匹配卖单
            foreach ($this->asks as $askId => $ask) {
                if ($this->canMatch($order, $ask)) {
                    $matches[] = $ask;
                }
            }
        } else {
            // 卖单匹配买单
            foreach ($this->bids as $bidId => $bid) {
                if ($this->canMatch($order, $bid)) {
                    $matches[] = $bid;
                }
            }
        }
        return $matches;
    }
    // 执行匹配
    private function executeMatches(Order $order, array $matchedOrders): void {
        foreach ($matchedOrders as $matchedOrder) {
            $matchResult = $this->calculateMatch($order, $matchedOrder);
            // 创建成交记录
            $this->createTrade($matchResult);
            // 更新剩余数量
            $this->updateRemainingAmount($matchedOrder, $matchResult['filledAmount']);
            // 如果完全成交，移除订单
            if ($matchResult['fullyFilled']) {
                $this->removeOrder($matchedOrder);
            }
        }
    }
    // 检查是否可匹配
    private function canMatch(Order $order1, Order $order2): bool {
        // 检查价格是否匹配 (简化逻辑)
        $price1 = $this->calculatePrice($order1);
        $price2 = $this->calculatePrice($order2);
        if ($this->isBid($order1)) {
            return $price1 >= $price2;
        } else {
            return $price1 <= $price2;
        }
    }
    // 计算价格
    private function calculatePrice(Order $order): float {
        $makerAmount = (float)$order->makerAmount;
        $takerAmount = (float)$order->takerAmount;
        if ($makerAmount == 0) {
            return 0;
        }
        return $takerAmount / $makerAmount;
    }
    // 判断是否为买单
    private function isBid(Order $order): bool {
        // 根据实际业务逻辑判断
        return strtolower($order->makerToken) < strtolower($order->takerToken);
    }
    // 生成订单ID
    private function generateOrderId(Order $order): string {
        return md5($order->maker . $order->salt . time());
    }
}

0x协议集成

<?php
// ZeroXIntegration.php - 0x协议集成
class ZeroXIntegration {
    private string $zeroXApiEndpoint;
    private string $exchangeContract;
    private array $config;
    public function __construct(array $config) {
        $this->config = $config;
        $this->zeroXApiEndpoint = $config['api_endpoint'] ?? 'https://api.0x.org';
        $this->exchangeContract = $config['exchange_contract'] ?? '';
    }
    // 创建0x订单
    public function createZeroXOrder(Order $order): array {
        $orderData = $order->toEIP712Format();
        // 添加0x特定字段
        $orderData['exchangeContract'] = $this->exchangeContract;
        $orderData['makerAssetData'] = $this->encodeAssetData($order->makerToken);
        $orderData['takerAssetData'] = $this->encodeAssetData($order->takerToken);
        $orderData['feeRecipient'] = $this->config['fee_recipient'] ?? '0x0000000000000000000000000000000000000000';
        $orderData['makerFee'] = '0';
        $orderData['takerFee'] = '0';
        return $orderData;
    }
    // 编码资产数据
    private function encodeAssetData(string $tokenAddress): string {
        // ERC20代币数据编码
        $erc20Proxy = $this->config['erc20_proxy'] ?? '';
        $assetData = '0xf47261b0' . str_pad(substr($tokenAddress, 2), 64, '0', STR_PAD_LEFT);
        return $assetData;
    }
    // 从0x API获取报价
    public function getQuote(string $sellToken, string $buyToken, string $sellAmount): ?array {
        $params = [
            'sellToken' => $sellToken,
            'buyToken' => $buyToken,
            'sellAmount' => $sellAmount
        ];
        $url = $this->zeroXApiEndpoint . '/swap/v1/quote?' . http_build_query($params);
        $response = $this->makeRequest($url);
        if ($response && isset($response['price'])) {
            return [
                'price' => $response['price'],
                'guaranteedPrice' => $response['guaranteedPrice'] ?? null,
                'buyAmount' => $response['buyAmount'],
                'sellAmount' => $response['sellAmount'],
                'sources' => $response['sources'] ?? [],
                'estimatedGas' => $response['estimatedGas'] ?? null
            ];
        }
        return null;
    }
    // 填写订单
    public function fillOrder(Order $order, string $takerAddress, string $takerAmount): array {
        $orderData = $this->createZeroXOrder($order);
        $fillData = [
            'order' => $orderData,
            'signature' => $order->signature,
            'takerAddress' => $takerAddress,
            'takerAmount' => $takerAmount
        ];
        // 准备交易数据
        $txData = $this->prepareTransactionData($fillData);
        return [
            'to' => $this->exchangeContract,
            'data' => $txData,
            'value' => '0x0'
        ];
    }
    // 准备交易数据
    private function prepareTransactionData(array $fillData): string {
        // 这里应该实现实际的ABI编码
        // 简化版本
        return '0x' . bin2hex(json_encode($fillData));
    }
    // 签名验证
    public function verifySignature(Order $order): bool {
        $messageHash = $this->hashOrder($order);
        $signerAddress = $this->recoverSigner($messageHash, $order->signature);
        return strtolower($signerAddress) === strtolower($order->maker);
    }
    // 哈希订单
    private function hashOrder(Order $order): string {
        $orderData = $this->createZeroXOrder($order);
        $encodedData = json_encode($orderData);
        return '0x' . hash('keccak256', $encodedData);
    }
    // 恢复签名者地址
    private function recoverSigner(string $messageHash, string $signature): string {
        // 实现EIP-712签名恢复
        // 这里需要调用以太坊节点或使用相关库
        return ''; // 简化处理
    }
    // 发送HTTP请求
    private function makeRequest(string $url): ?array {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_HTTPHEADER, [
            'Content-Type: application/json'
        ]);
        $response = curl_exec($ch);
        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);
        if ($httpCode === 200 && $response) {
            return json_decode($response, true);
        }
        return null;
    }
}

价格聚合器

<?php
// PriceAggregator.php - 0x价格聚合
class PriceAggregator {
    private array $sources = [];
    private array $cache = [];
    private int $cacheTime = 30; // 缓存时间（秒）
    public function __construct() {
        $this->initSources();
    }
    // 初始化价格源
    private function initSources(): void {
        $this->sources = [
            '0x_api' => 'https://api.0x.org/swap/v1/price',
            'uniswap' => 'https://api.thegraph.com/subgraphs/name/uniswap/uniswap-v2',
            'sushiswap' => 'https://api.thegraph.com/subgraphs/name/sushiswap/exchange'
        ];
    }
    // 获取最优价格
    public function getBestPrice(string $tokenIn, string $tokenOut, string $amount): array {
        $cacheKey = md5($tokenIn . $tokenOut . $amount);
        // 检查缓存
        if (isset($this->cache[$cacheKey]) && 
            (time() - $this->cache[$cacheKey]['timestamp'] < $this->cacheTime)) {
            return $this->cache[$cacheKey]['data'];
        }
        $prices = [];
        $bestPrice = null;
        $bestSource = '';
        // 从多个源获取价格
        foreach ($this->sources as $source => $endpoint) {
            try {
                $price = $this->fetchPrice($source, $tokenIn, $tokenOut, $amount);
                if ($price !== null) {
                    $prices[] = [
                        'source' => $source,
                        'price' => $price,
                        'timestamp' => time()
                    ];
                    if ($bestPrice === null || $price < $bestPrice) {
                        $bestPrice = $price;
                        $bestSource = $source;
                    }
                }
            } catch (Exception $e) {
                // 记录错误但继续
                error_log("Price fetch error from {$source}: " . $e->getMessage());
            }
        }
        $result = [
            'bestPrice' => $bestPrice,
            'bestSource' => $bestSource,
            'allPrices' => $prices,
            'timestamp' => time()
        ];
        // 缓存结果
        $this->cache[$cacheKey] = [
            'data' => $result,
            'timestamp' => time()
        ];
        return $result;
    }
    // 获取特定源的价格
    private function fetchPrice(string $source, string $tokenIn, string $tokenOut, string $amount): ?float {
        switch ($source) {
            case '0x_api':
                return $this->fetchFrom0x($tokenIn, $tokenOut, $amount);
            case 'uniswap':
                return $this->fetchFromUniswap($tokenIn, $tokenOut, $amount);
            case 'sushiswap':
                return $this->fetchFromSushiSwap($tokenIn, $tokenOut, $amount);
            default:
                return null;
        }
    }
    // 从0x API获取价格
    private function fetchFrom0x(string $tokenIn, string $tokenOut, string $amount): ?float {
        $url = $this->sources['0x_api'] . '?' . http_build_query([
            'sellToken' => $tokenIn,
            'buyToken' => $tokenOut,
            'sellAmount' => $amount
        ]);
        $response = $this->httpGet($url);
        if ($response && isset($response['price'])) {
            return (float)$response['price'];
        }
        return null;
    }
    // 从Uniswap获取价格
    private function fetchFromUniswap(string $tokenIn, string $tokenOut, string $amount): ?float {
        // 实现Uniswap价格查询
        $query = "
        {
            pair(id: \"" . $this->getPairAddress($tokenIn, $tokenOut) . "\") {
                token0Price
                token1Price
            }
        }";
        $response = $this->graphQLQuery($this->sources['uniswap'], $query);
        if ($response && isset($response['data']['pair'])) {
            $pair = $response['data']['pair'];
            return (float)$pair['token0Price'];
        }
        return null;
    }
    // HTTP GET请求
    private function httpGet(string $url): ?array {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_TIMEOUT, 10);
        $response = curl_exec($ch);
        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);
        if ($httpCode === 200 && $response) {
            return json_decode($response, true);
        }
        return null;
    }
    // GraphQL查询
    private function graphQLQuery(string $endpoint, string $query): ?array {
        $data = ['query' => $query];
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $endpoint);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
        curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/json']);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_TIMEOUT, 10);
        $response = curl_exec($ch);
        curl_close($ch);
        if ($response) {
            return json_decode($response, true);
        }
        return null;
    }
    // 获取交易对地址（简化实现）
    private function getPairAddress(string $tokenA, string $tokenB): string {
        // 实际实现需要计算Uniswap的pair地址
        return '0x' . md5($tokenA . $tokenB);
    }
}

使用示例

<?php
// index.php - 使用示例
require_once 'Order.php';
require_once 'OrderBook.php';
require_once 'ZeroXIntegration.php';
require_once 'PriceAggregator.php';
// 初始化数据库连接
$db = new PDO('mysql:host=localhost;dbname=orderbook', 'root', 'password');
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
// 配置
$config = [
    'api_endpoint' => 'https://api.0x.org',
    'exchange_contract' => '0x...',
    'erc20_proxy' => '0x...',
    'fee_recipient' => '0x...'
];
// 创建订单簿
$orderBook = new OrderBook($db);
// 创建0x集成
$zeroX = new ZeroXIntegration($config);
// 创建价格聚合器
$priceAggregator = new PriceAggregator();
// 示例：创建新订单
$order = new Order([
    'maker' => '0x1234567890123456789012345678901234567890',
    'taker' => '0x0000000000000000000000000000000000000000',
    'makerToken' => '0x...',  // WETH
    'takerToken' => '0x...',  // USDC
    'makerAmount' => '1000000000000000000',  // 1 ETH
    'takerAmount' => '3000000000',  // 3000 USDC
    'expiryTimestamp' => time() + 3600,
    'salt' => (string)random_int(0, PHP_INT_MAX)
]);
// 添加到订单簿
$result = $orderBook->addOrder($order);
echo "Order added: " . ($result ? 'Success' : 'Failed') . PHP_EOL;
// 获取报价
$quote = $zeroX->getQuote('0x...', '0x...', '1000000000000000000');
print_r($quote);
// 获取最优价格
$bestPrice = $priceAggregator->getBestPrice('0x...', '0x...', '1000000000000000000');
print_r($bestPrice);

这个实现包含了订单簿管理、0x协议集成和价格聚合的核心功能，根据实际需求,你可能需要调整：

1. 数据库表结构和查询
2. 签名验证逻辑
3. 价格计算和匹配算法
4. 交易执行和结算逻辑

需要我详细说明某个特定部分吗？