dedecms微信支付

<?php
// 调用微信支付 API
function wechat_pay($order_id, $total_fee) {
    // 微信支付配置
    $appid = 'your_appid';
    $mch_id = 'your_mch_id';
    $key = 'your_api_key';

    // 构造请求参数
    $data = array(
        'appid' => $appid,
        'mch_id' => $mch_id,
        'nonce_str' => md5(uniqid()),
        'body' => 'Order Payment',
        'out_trade_no' => $order_id,
        'total_fee' => $total_fee * 100, // 单位为分
        'spbill_create_ip' => $_SERVER['REMOTE_ADDR'],
        'notify_url' => 'http://yourdomain.com/notify.php',
        'trade_type' => 'JSAPI'
    );

    // 签名
    $data['sign'] = get_sign($data, $key);

    // 发送请求
    $xml = array_to_xml($data);
    $response = post_xml('https://api.mch.weixin.qq.com/pay/unifiedorder', $xml);
    $result = xml_to_array($response);

    if ($result['return_code'] == 'SUCCESS' && $result['result_code'] == 'SUCCESS') {
        // 生成前端调用微信支付的参数
        $jsApiParameters = $result['prepay_id'];
        return $jsApiParameters;
    } else {
        return false;
    }
}

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

function array_to_xml($data) {
    $xml = "<xml>";
    foreach ($data as $k => $v) {
        $xml .= "<$k><![CDATA[$v]]></$k>";
    }
    $xml .= "</xml>";
    return $xml;
}

function post_xml($url, $xml) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch => CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    $result = curl_exec($ch);
    curl_close($ch);
    return $result;
}

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