php餐饮管理系统 微信

PHP餐饮管理系统可以集成微信支付功能，实现在线点餐、支付等功能。以下是一个简单的PHP餐饮管理系统的示例代码：

<?php
// 连接数据库
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";

$conn = new mysqli($servername, $username, $password, $dbname);

if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

// 处理微信支付回调
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    // 解析微信支付回调数据
    $xmlData = file_get_contents('php://input');
    $data = simplexml_load_string($xmlData, 'SimpleXMLElement', LIBXML_NOCDATA);

    // 处理支付结果
    $out_trade_no = $data->out_trade_no; // 商户订单号
    $transaction_id = $data->transaction_id; // 微信支付订单号
    $total_fee = $data->total_fee; // 支付金额

    // 更新订单状态为已支付
    $sql = "UPDATE orders SET status = 'paid' WHERE order_no = '$out_trade_no'";
    $conn->query($sql);

    // 返回成功结果给微信支付
    echo '<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>';
    exit;
}

// 处理用户下单请求
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $order_no = $_POST['order_no'];
    $total_amount = $_POST['total_amount'];

    // 生成订单并保存到数据库
    $sql = "INSERT INTO orders (order_no, total_amount, status) VALUES ('$order_no', '$total_amount', 'unpaid')";
    $conn->query($sql);

    // 调用微信支付接口
    $params = [
        'appid' => 'your_appid',
        'mch_id' => 'your_mch_id',
        'nonce_str' => uniqid(),
        'body' => '餐饮订单',
        'out_trade_no' => $order_no,
        'total_fee' => $total_amount,
        'spbill_create_ip' => $_SERVER['REMOTE_ADDR'],
        'notify_url' => 'https://your_domain.com/weixin_notify.php', // 微信支付回调地址
        'trade_type' => 'JSAPI',
        'openid' => 'user_openid',
    ];

    // 生成签名
    ksort($params);
    $stringA = http_build_query($params);
    $stringSignTemp = $stringA . '&key=your_key';
    $sign = strtoupper(md5($stringSignTemp));

    // 构造请求参数
    $params['sign'] = $sign;
    $xmlData = '<xml>';
    foreach ($params as $key => $value) {
        $xmlData .= "<$key><![CDATA[$value]]></$key>";
    }
    $xmlData .= '</xml>';

    // 发起微信支付请求
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, 'https://api.mch.weixin.qq.com/pay/unifiedorder');
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $xmlData);
    $response = curl_exec($ch);
    curl_close($ch);

    // 解析微信支付返回结果
    $data = simplexml_load_string($response, 'SimpleXMLElement', LIBXML_NOCDATA);

    // 返回支付参数给前端
    $pay_params = [
        'appId' => $data->appid,
        'timeStamp' => time(),
        'nonceStr' => $data->nonce_str,
        'package' => 'prepay_id=' . $data->prepay_id,
        'signType' => 'MD5',
    ];

    // 生成签名
    ksort($pay_params);
    $stringA = http_build_query($pay_params);
    $stringSignTemp = $stringA . '&key=your_key';
    $pay_params['paySign'] = strtoupper(md5($stringSignTemp));

    echo json_encode($pay_params);
    exit;
}

以上代码是一个简单的示例，实际开发中还需要根据具体需求进行完善和优化。