织梦dedecms微信支付

<?php
// 配置微信支付参数
$wechatPayConfig = [
    'appid' => 'your_appid',
    'mch_id' => 'your_mch_id',
    'key' => 'your_api_key',
];

// 调用微信支付接口
function wechatPay($orderInfo) {
    global $wechatPayConfig;
    // 构建支付请求参数
    $params = [
        'appid' => $wechatPayConfig['appid'],
        'mch_id' => $wechatPayConfig['mch_id'],
        'nonce_str' => md5(uniqid(microtime(true), true)),
        'body' => $orderInfo['body'],
        'out_trade_no' => $orderInfo['out_trade_no'],
        'total_fee' => $orderInfo['total_fee'],
        'spbill_create_ip' => $_SERVER['REMOTE_ADDR'],
        'notify_url' => 'your_notify_url',
        'trade_type' => 'JSAPI',
    ];
    // 签名
    $params['sign'] = generateSign($params, $wechatPayConfig['key']);
    // 发送支付请求
    $xml = arrayToXml($params);
    $response = postXmlCurl($xml, 'https://api.mch.weixin.qq.com/pay/unifiedorder');
    $result = xmlToArray($response);
    if ($result['return_code'] == 'SUCCESS' && $result['result_code'] == 'SUCCESS') {
        // 返回支付参数给前端
        return $result;
    } else {
        // 支付失败处理
        return false;
    }
}

// 辅助函数
function generateSign($params, $key) {
    ksort($params);
    $str = '';
    foreach ($params as $k => $v) {
        if ($v != '' && $k != 'sign') {
            $str .= "&$k=$v";
        }
    }
    $str .= "&key=$key";
    return strtoupper(md5($str));
}

function arrayToXml($arr) {
    $xml = "<xml>";
    foreach ($arr as $k => $v) {
        $xml .= "<$k>$v</$k>";
    }
    $xml .= "</xml>";
    return $xml;
}

function postXmlCurl($xml, $url) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch => CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
    $data = curl_exec($ch);
    curl_close($ch);
    return $data;
}

function xmlToArray($xml) {
    libxml_disable_entity_loader(true);
    $array = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
    return $array;
}
?>

<?php
// 处理微信支付回调通知
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    $xml = file_get_contents('php://input');
    $result = xmlToArray($xml);
    if (verifySign($result, $wechatPayConfig['key'])) {
        // 验证签名成功，处理订单
        if ($result['return_code'] == 'SUCCESS' && $result['result_code'] == 'SUCCESS') {
            // 更新订单状态为已支付
            updateOrderStatus($result['out_trade_no'], 'paid');
            echo "<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>";
        }
    } else {
        echo "<xml><return_code><![CDATA[FAIL]]></return_code><return_msg><![CDATA[签名验证失败]]></return_msg></xml>";
    }
}

// 验证签名
function verifySign($params, $key) {
    $str = '';
    foreach ($params as $k => $v) {
        if ($v != '' && $k != 'sign') {
            $str .= "&$k=$v";
        }
    }
    $str .= "&key=$key";
    $sign = strtoupper(md5($str));
    return $sign == $params['sign'];
}

// 更新订单状态
function updateOrderStatus($orderId, $status) {
    // 数据库操作，更新订单状态
    // ...
}
?>