首先在微信商户开通此功能（开通可能不易）
拿到 商户号 证书 还有证书序列号 关联商户的appid(如果是app在开放平台申请appid小程序的话那就是小程序的appid) 注意一定要关联appid
在微信商户号里 开通 api 权限 以及添加服务器的ip
上代码
public function zhuanzhang()
{
$post_data = [
"appid" => 'wx0b468e83f769fc09',//appid
"out_batch_no" => 'wlss'.date('YmdHis').mt_rand(100000, 999900),//商家批次单号
"batch_name" => '提现到账',//批次名称
"batch_remark" => '提现到账',//批次备注
"total_amount" => intval(strval($params['money'] * 100)),// 转账金额单位为“分”
"total_num" => 1, // 转账总笔数
//此处可以多笔提现 组合二维数组放到transfer_detail_list即可 我这里单笔操作，写死了
"transfer_detail_list" => [
[
'out_detail_no' => 'wlss'.date('YmdHis').mt_rand(100000, 999900),
'transfer_amount' => intval(strval($params['money'] * 100)),
'transfer_remark' => '提现到账',
'openid' => $openid,
]
]
];
$url = 'https://api.mch.weixin.qq.com/v3/transfer/batches';
$result = self::wx_post($url, json_encode($post_data,
JSON_UNESCAPED_SLASHES|JSON_UNESCAPED_UNICODE));
$result = json_decode($result, true);
if(isset($result['code'])){
$this->error($result['massage']);
}
}
public static function wx_post($url, $param)
{
$authorization = self::getV3Sign($url, "POST", $param);
$curl = curl_init();
$headers = [
'Authorization:' . $authorization,
'Accept:application/json',
'Content-Type:application/json;charset=utf-8',
'User-Agent:Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36',
];
curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_TIMEOUT, 500);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_POSTFIELDS, $param);
curl_setopt($curl, CURLOPT_POST, true);
$res = curl_exec($curl);
curl_close($curl);
return $res;
}
public static function getV3Sign($url, $http_method, $body)
{
$nonce = strtoupper(self::createNonceStr(32));
$timestamp = time();
$url_parts = parse_url($url);
$canonical_url = ($url_parts['path'] . (!empty($url_parts['query']) ? "?${url_parts['query']}" : ""));
$cert_dir = '证书路径'; //绝对路径
$sslKeyPath = $cert_dir."apiclient_key.pem";
//拼接参数
$message = $http_method . "\n" .
$canonical_url . "\n" .
$timestamp . "\n" .
$nonce . "\n" .
$body . "\n";
$private_key = self::getPrivateKey($sslKeyPath);
openssl_sign($message, $raw_sign, $private_key, 'sha256WithRSAEncryption');
$sign = base64_encode($raw_sign);
$token = sprintf('WECHATPAY2-SHA256-RSA2048 mchid="%s",nonce_str="%s",timestamp="%s",serial_no="%s",signature="%s"', "商户号", $nonce, $timestamp, "证书序列号", $sign);
return $token;
}
public static function createNonceStr($length = 16) { //生成随机16个字符的字符串
$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
$str = "";
for ($i = 0; $i < $length; $i++) {
$str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
}
return $str;
}
public static function getPrivateKey($filepath = '')
{
if (empty($filepath)) {
//私钥位置
$cert_dir = '证书位置';
$filepath = $cert_dir."apiclient_key.pem";
}
return openssl_get_privatekey(file_get_contents($filepath));
}
到此微信商户转账到用户零钱结束 （注意微信商户号里一定要有钱） //不然会报错
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