最新PHP对接微信支付，发起商家转账API，商家转账到零钱

<?phpnamespace app\common\service;use app\common\exception\BaseException;class WechatPayTransfer
{protected $wxapp = [];public function __construct($wxapp){$this->wxapp = $wxapp;}/*** 商家转账到零钱（公众号：程序员在囧途）* @param $batch_name* @param $out_trade_no* @param $money* @param $openid* @throws BaseException*/public function transfer($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 $token;}/*** 获取cert证书文件* @return array* @throws BaseException*/private function getCertPem(){if (empty($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'];}
}
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
发起商家转账API
最新PHP对接微信支付，发起商家转账API，商家转账到零钱

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