wxapp = $wxapp; } public function transfer($batch_name, $out_trade_no, $money, $openid) { $url = 'https://api.mch.weixin.qq.com/v3/transfer/batches'; $pars = []; $pars['appid'] = $this->wxapp['app_id'];//直连商户的appid $pars['out_batch_no'] = 'batch' . $out_trade_no;//商户系统内部的商家批次单号，要求此参数只能由数字、大小写字母组成，在商户系统内部唯一 $pars['batch_name'] = $batch_name;//该笔批量转账的名称 $pars['batch_remark'] = $batch_name;//转账说明，UTF8编码，最多允许32个字符 $pars['total_amount'] = intval($money * 100);//转账总金额 单位为“分” $pars['total_num'] = 1;//转账总笔数 $pars['transfer_detail_list'][0] = [ 'out_detail_no' => 'transfer' . $out_trade_no, 'transfer_amount' => $pars['total_amount'], 'transfer_remark' => $batch_name, 'openid' => $openid ];//转账明细列表 $token = $this->getToken($pars);//获取token $res = $this->https_request($url, json_encode($pars), $token);//发送请求 $data = json_decode($res, true); if(isset($data['batch_id']) && $data['batch_id']){ return $data; } return []; } function https_request($url, $data = null, $token) { $curl = curl_init(); curl_setopt($curl, CURLOPT_URL, (string)$url); curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE); curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE); if (!empty($data)) { curl_setopt($curl, CURLOPT_POST, 1); curl_setopt($curl, CURLOPT_POSTFIELDS, $data); } curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); //添加请求头 $headers = [ 'Authorization:WECHATPAY2-SHA256-RSA2048 ' . $token, 'Accept: application/json', 'Content-Type: application/json; charset=utf-8', 'User-Agent:Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36', ]; if (!empty($headers)) { curl_setopt($curl, CURLOPT_HTTPHEADER, $headers); } $output = curl_exec($curl); curl_close($curl); return $output; } public function getToken($pars) { // $url = 'https://api.mch.weixin.qq.com/v3/certificates'; $url = 'https://api.mch.weixin.qq.com/v3/transfer/batches'; $http_method = 'POST';//请求方法（GET,POST,PUT） $timestamp = time();//请求时间戳 $url_parts = parse_url($url);//获取请求的绝对URL $nonce = $timestamp . rand('10000', '99999');//请求随机串 $body = json_encode((object)$pars);//请求报文主体 $stream_opts = [ "ssl" => [ "verify_peer" => false, "verify_peer_name" => false, ] ]; try { $certPem = $this->getCertPem(); $apiclient_cert_path = $certPem['certPem']; $apiclient_key_path = $certPem['keyPem']; $apiclient_cert_arr = openssl_x509_parse(file_get_contents($apiclient_cert_path, false, stream_context_create($stream_opts))); $serial_no = $apiclient_cert_arr['serialNumberHex'];//证书序列号 $mch_private_key = file_get_contents($apiclient_key_path, false, stream_context_create($stream_opts));//密钥 $merchant_id = $this->wxapp['mchid']; $canonical_url = ($url_parts['path'] . (!empty($url_parts['query']) ? "?${url_parts['query']}" : "")); $message = $http_method . "\n" . $canonical_url . "\n" . $timestamp . "\n" . $nonce . "\n" . $body . "\n"; openssl_sign($message, $raw_sign, $mch_private_key, 'sha256WithRSAEncryption'); $sign = base64_encode($raw_sign);//签名 $schema = 'WECHATPAY2-SHA256-RSA2048'; $token = sprintf('mchid="%s",nonce_str="%s",timestamp="%d",serial_no="%s",signature="%s"', $merchant_id, $nonce, $timestamp, $serial_no, $sign);//微信返回token } catch (\Exception $e) { throw new BaseException(['msg' => $e->getMessage()]); } return $token; } private function getCertPem() { if (empty($this->wxapp['cert_pem']) || empty($this->wxapp['key_pem'])) { throw new BaseException(['msg' => '请先到后台小程序设置填写微信支付证书文件']); } // cert目录 $filePath = dirname(__DIR__) . '/library/wechat/cert/' . $this->wxapp['wxapp_id'] . '/'; return [ 'certPem' => $filePath . 'cert.pem', 'keyPem' => $filePath . 'key.pem' ]; }}最新PHP对接微信支付，发起商家转账API，商家转账到零钱
上面类文件可直接使用，根据自己需求改动即可，下方是微信支付官方的接口文档
来源地址：https://blog.csdn.net/qq_30036559/article/details/127595933
