使用 PHP SDK

1<?php
2  
3require_once('vendor/autoload.php');
4
5use WeChatPay\Builder;
6use WeChatPay\Crypto\Rsa;
7use WeChatPay\Util\PemUtil;
8
9// 设置参数
10
11// 商户号
12$merchantId = '190000****';
13
14// 从本地文件中加载「商户API私钥」，「商户API私钥」会用来生成请求的签名
15$merchantPrivateKeyFilePath = 'file:///path/to/merchant/apiclient_key.pem';
16$merchantPrivateKeyInstance = Rsa::from($merchantPrivateKeyFilePath, Rsa::KEY_TYPE_PRIVATE);
17
18// 「商户API证书」的「证书序列号」
19$merchantCertificateSerial = '3775B6A45ACD588826D15E583A95F5DD********';
20
21// 从本地文件中加载「微信支付平台证书」(可使用证书下载工具得到），用来验证微信支付应答的签名
22$platformCertificateFilePath = 'file:///path/to/wechatpay/cert.pem';
23$platformPublicKeyInstance = Rsa::from($platformCertificateFilePath, Rsa::KEY_TYPE_PUBLIC);
24
25// 从「微信支付平台证书」中获取「证书序列号」
26$platformCertificateSerial = PemUtil::parseCertificateSerialNo($platformCertificateFilePath);
27
28// 构造一个 APIv3 客户端实例
29$instance = Builder::factory([
30    'mchid' => $merchantId,
31    'serial' => $merchantCertificateSerial,
32    'privateKey' => $merchantPrivateKeyInstance,
33    'certs' => [
34        $platformCertificateSerial => $platformPublicKeyInstance,
35    ],
36]);
37
38// 以 Native 支付为例，发送请求
39$response = $instance->chain('v3/pay/partner/transactions/native')->post([
40  'json' => [
41    'sp_appid'       => 'wxdace645e0bc2cXXX',
42    'sp_mchid'       => '1900006XXX',
43    'sub_mchid'      => '1900007xxx',
44    'description'    => 'Image形象店-深圳腾大-QQ公仔',
45    'out_trade_no'   => 'native12177525012014070332333',
46    'amount'         => [
47      'total'    => 1,
48      'currency' => 'CNY',
49    ],
50    'notify_url'     => 'https://weixin.qq.com/',
51  ],
52  // 在http请求增加一个Wechatpay-Serial请求头，具体作用可参考：https://pay.weixin.qq.com/doc/v3/merchant/4012154180#5.2-%E5%88%87%E6%8D%A2%E9%AA%8C%E7%AD%BE%E5%92%8C%E5%AE%9E%E7%8E%B0%E5%9B%9E%E8%B0%83%E5%85%BC%E5%AE%B9
53  'headers' => [
54    'Wechatpay-Serial' => '134912410000000000000xxxxxxx',
55  ],
56]);
57print_r(json_decode((string) $response->getBody(), true));
58
59//当程序进入「异常捕获」逻辑，输出形如：
60{
61    "code": "RESOURCE_NOT_EXISTS",
62    "message": "无可用的平台证书，请在商户平台-API安全申请使用微信支付公钥。"
63}
64//即表示商户仅能使用微信支付公钥初始化模式

1<?php
2  
3require_once('vendor/autoload.php');
4
5use WeChatPay\Builder;
6use WeChatPay\Crypto\Rsa;
7
8// 设置参数
9
10// 商户号
11$merchantId = '190000****';
12
13// 从本地文件中加载「商户API私钥」，「商户API私钥」会用来生成请求的签名
14$merchantPrivateKeyFilePath = 'file:///path/to/merchant/apiclient_key.pem';
15$merchantPrivateKeyInstance = Rsa::from($merchantPrivateKeyFilePath, Rsa::KEY_TYPE_PRIVATE);
16
17// 「商户API证书」的「证书序列号」
18$merchantCertificateSerial = '3775B6A45ACD588826D15E583A95F5DD********';
19
20//从本地文件中加载「微信支付公钥」，用来验证微信支付应答的签名
21$platformPublicKeyFilePath = 'file:///path/to/wechatpay/publickey.pem';
22$twoPlatformPublicKeyInstance = Rsa::from($platformPublicKeyFilePath, Rsa::KEY_TYPE_PUBLIC);
23
24// 「微信支付公钥」的「微信支付公钥ID」
25// 需要在 商户平台 -> 账户中心 -> API安全 查询
26$platformPublicKeyId = 'PUB_KEY_ID_01142321349124100000000000********';
27
28// 构造一个 APIv3 客户端实例
29$instance = Builder::factory([
30    'mchid'      => $merchantId,
31    'serial'     => $merchantCertificateSerial,
32    'privateKey' => $merchantPrivateKeyInstance,
33    'certs'      => [
34        $platformPublicKeyId => $twoPlatformPublicKeyInstance,
35    ],
36]);
37
38// 以 Native 支付为例，发送请求
39$response = $instance->chain('v3/pay/partner/transactions/native')->post([
40  'json' => [
41    'sp_appid'       => 'wxdace645e0bc2cXXX',
42    'sp_mchid'       => '1900006XXX',
43    'sub_mchid'      => '1900007xxx',
44    'description'    => 'Image形象店-深圳腾大-QQ公仔',
45    'out_trade_no'   => 'native12177525012014070332333',
46    'amount'         => [
47      'total'    => 1,
48      'currency' => 'CNY',
49    ],
50    'notify_url'     => 'https://weixin.qq.com/',
51  ],
52  // 在http请求增加一个Wechatpay-Serial请求头，具体作用可参考：https://pay.weixin.qq.com/doc/v3/merchant/4012154180#5.2-%E5%88%87%E6%8D%A2%E9%AA%8C%E7%AD%BE%E5%92%8C%E5%AE%9E%E7%8E%B0%E5%9B%9E%E8%B0%83%E5%85%BC%E5%AE%B9
53  'headers' => [
54    'Wechatpay-Serial' => 'PUB_KEY_ID_0114232134912410000000000000',
55  ],
56]);
57print_r(json_decode((string) $response->getBody(), true));