thinkphp 微信提现代码

以下是一个简单的ThinkPHP 5.1版本的微信提现代码示例：

<?php
namespace app\index\controller;

use think\Controller;
use think\facade\Config;
use think\facade\Log;
use think\facade\Request;

class Withdraw extends Controller
{
    // 微信提现接口
    public function wechatWithdraw()
    {
        // 获取请求参数
        $params = Request::param();

        // 获取微信支付配置信息
        $wxPayConfig = Config::get('wxpay');

        // 请求参数构造
        $data = [
            'mch_appid' => $wxPayConfig['appid'],
            'mchid' => $wxPayConfig['mchid'],
            'nonce_str' => md5(uniqid()),
            'partner_trade_no' => $params['order_no'],
            'openid' => $params['openid'],
            'check_name' => 'NO_CHECK', // 不校验真实姓名
            'amount' => $params['amount'], // 提现金额，单位分
            'desc' => '提现描述',
            'spbill_create_ip' => $_SERVER['REMOTE_ADDR'],
        ];

        // 生成签名
        $data['sign'] = $this->makeSign($data, $wxPayConfig['key']);

        // 数组转xml格式
        $xmlData = $this->arrayToXml($data);

        // 发送请求
        $url = 'https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers';
        $response = $this->postXmlCurl($xmlData, $url, true, 6, $wxPayConfig['sslcert_path'], $wxPayConfig['sslkey_path']);

        // 解析返回的xml数据
        $result = $this->xmlToArray($response);

        // 返回结果
        if ($result['return_code'] == 'SUCCESS' && $result['result_code'] == 'SUCCESS') {
            // 提现成功
            return json(['code' => 0, 'msg' => '提现成功']);
        } else {
            // 提现失败
            Log::error('微信提现失败：' . $response);
            return json(['code' => 1, 'msg' => '提现失败，请重试']);
        }
    }

    // 生成签名
    private function makeSign($data, $key)
    {
        // 去除数组中的空值
        $data = array_filter($data);
        // 按照键名的字典序排序
        ksort($data);

        // 生成字符串
        $stringA = '';
        foreach ($data as $key => $value) {
            $stringA .= $key . '=' . $value . '&';
        }
        $stringA .= 'key=' . $key;

        // 进行MD5签名并转化为大写
        return strtoupper(md5($stringA));
    }

    // 数组转xml格式
    private function arrayToXml($data)
    {
        $xml = "<xml>";
        foreach ($data as $key => $value) {
            if (is_numeric($value)) {
                $xml .= "<" . $key . ">" . $value . "</" . $key . ">";
            } else {
                $xml .= "<" . $key . "><![CDATA[" . $value . "]]></" . $key . ">";
            }
        }
        $xml .= "</xml>";
        return $xml;
    }

    // 发送post请求xml数据
    private function postXmlCurl($xmlData, $url, $useCert = false, $timeout = 30, $sslcert_path = '', $sslkey_path = '')
    {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($ch, CURLOPT_HEADER, false);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $xmlData);
        if ($useCert == true) {
            curl_setopt($ch, CURLOPT_SSLCERTTYPE, 'PEM');
            curl_setopt($ch, CURLOPT_SSLCERT, $sslcert_path);
            curl_setopt($ch, CURLOPT_SSLKEYTYPE, 'PEM');
            curl_setopt($ch, CURLOPT_SSLKEY, $sslkey_path);
        }
        $data = curl_exec($ch);
        curl_close($ch);
        return $data;
    }

    // xml转数组
    private function xmlToArray($xml)
    {
        // 禁止引用外部xml实体
        libxml_disable_entity_loader(true);
        $xmlString = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA);
        $result = json_decode(json_encode($xmlString), true);
        return $result;
    }
}

其中，$wxPayConfig是微信支付的配置信息，可以在config目录下的wxpay.php文件中进行配置。

该示例仅供参考，实际使用时需要根据自己的业务需求进行相应的修改和完善。