Home > Article > WeChat Applet > Detailed explanation of credit card payment examples for WeChat payment development
Detailed explanation of credit card payment examples for WeChat payment development
- 零下一度Original
- 2018-05-12 10:32:235793browse
This article introduces the development process of card payment under WeChat payment. WeChat card payment refers to the payment process in which the user opens the card swiping interface of WeChat wallet, and the merchant scans the QR code and submits the payment to complete the payment.
1. Card payment API
Interface address
api.mch.weixin.qq.com/pay/micropay
Is a certificate required?
No.
Input parameters
Name variable name required type example value description
|
|
|||||
| public account ID | appid | is | String(32) | wx8888888888888888 | The public account ID assigned by WeChat (corpid is the This appId) |
| merchant number | mch_id | is | String(32) | 1900000109 | Merchant number assigned by WeChat payment |
| Device number | device_info | No | String(32) | 013467007045764 | Terminal device number (customized by the merchant, such as store number) |
| Random string | nonce_str | is | String(32) | 5K8264ILTKCH16CQ2502SI8ZNMTM67VS | Random string, no longer than 32 bits. The recommended random number generation algorithm |
| signature | sign | is | String(32) | C380BEC2BFD727A4B6845133519F3AD6 | Signature, see signature generation algorithm for details |
| Product description | body | is | String(128) | image image store-Shenzhen Tengda-QQ doll | A brief description of the product, this field must be passed strictly in accordance with the specifications, for details, please see the parameter regulations |
| Product details | detail | No | String(6000) | {
"goods_detail":[
{
"goods_id":"iphone6s_16G",
"wxpay_goods_id":"1001",
"goods_name":"iPhone6s 16G",
"goods_num":1,
"price":528800,
"goods_category":"123456",
"body":"苹果手机"
},
{
"goods_id":"iphone6s_32G",
"wxpay_goods_id":"1002",
"goods_name":"iPhone6s 32G",
"quantity":1,
"price":608800,
"goods_category":"123789",
"body":"苹果手机"
}
]
} |
Product detailed list, using Json format , please be sure to use the CDATA tag to protect the JSON text string before transmitting the signature. goods_detail []： |
| Additional data | attach | No | String(127) | Description | Additional data, returned as is in the query API and payment notification, this field is mainly used for merchants to carry custom data for orders |
| Merchant order number | out_trade_no | is | String(32) | 1217752501201407033233368018 | The order number within the merchant system, within 32 characters, can contain letters. For other instructions, see the merchant order No. |
| Product details | detail | No | String(8192) | is consistent with the submitted data | The actual submitted return |
| order amount | total_fee | is | Int | 888 | Total order amount, unit is cents, can only be an integer, see payment amount |
| Currency type | fee_type | No | String(16) | CNY | is a three-letter code that conforms to the ISO4217 standard. The default is RMB: CNY. For a list of other values, see Currency Type |
| Terminal IP | spbill_create_ip | is | String(16) | 8.8.8.8 | Machine IP calling WeChat payment API |
| Goods tag | goods_tag | No | String(32) | Product tags, parameters of voucher or instant discount function, please refer to voucher or instant discount discount for details | |
| Specified payment method | limit_pay | No | String(32) | no_credit | no_credit--Specify that credit card payment cannot be used |
| Authorization code | auth_code | is | String(128) | 120061098828009406 | Scan the QR code to pay the authorization code , the device reads the barcode or QR code information in the user's WeChat |
Examples are as follows:
<xml> <appid>wx2421b1c4370ec43b</appid> <attach>订单额外描述</attach> <auth_code>120269300684844649</auth_code> <body>刷卡支付测试</body> <device_info>1000</device_info> <goods_tag></goods_tag> <mch_id>10000100</mch_id> <nonce_str>8aaee146b1dee7cec9100add9b96cbe2</nonce_str> <out_trade_no>1415757673</out_trade_no> <spbill_create_ip>14.17.22.52</spbill_create_ip> <time_expire></time_expire> <total_fee>1</total_fee> <sign>C29DB7DB1FD4136B84AE35604756362C</sign> </xml>
Note: Parameter values can be escaped with XML, The CDATA tag is used to indicate that the data is not parsed by the XML parser.
Return results
Name variable name required type example value description
| return_code | is | String(16) | SUCCESS | SUCCESS/FAIL | This field is the communication identification. Non-transaction identifier. You need to check the result_code to determine whether the transaction is successful. |
| return_msg | No | String(128) | Signature failed | Return information, if not empty, is the error reason | Signature failed Parameter format verification error |
| 公众账号ID | appid | 是 | String(32) | wx8888888888888888 | 调用接口提交的公众账号ID |
| 商户号 | mch_id | 是 | String(32) | 1900000109 | 调用接口提交的商户号 |
| 设备号 | device_info | 否 | String(32) | 013467007045764 | 调用接口提交的终端设备号， |
| 随机字符串 | nonce_str | 是 | String(32) | 5K8264ILTKCH16CQ2502SI8ZNMTM67VS | 微信返回的随机字符串 |
| 签名 | sign | 是 | String(32) | C380BEC2BFD727A4B6845133519F3AD6 | 微信返回的签名，详见签名生成算法 |
| 业务结果 | result_code | 是 | String(16) | SUCCESS | SUCCESS/FAIL |
| 错误代码 | err_code | 否 | String(32) | SYSTEMERROR | 详细参见错误列表 |
| 错误代码描述 | err_code_des | 否 | String(128) | 系统错误 | 错误返回的信息描述 |
当return_code 和result_code都为SUCCESS的时，还会包括以下字段：
名称 变量名 必填 类型 示例值 描述
| 用户标识 | openid | 是 | String(128) | Y | 用户在商户appid 下的唯一标识 |
| 是否关注公众账号 | is_subscribe | 是 | String(1) | Y | 用户是否关注公众账号，仅在公众账号类型支付有效，取值范围：Y或N;Y-关注;N-未关注 |
| 交易类型 | trade_type | 是 | String(16) | MICROPAY | 支付类型为MICROPAY(即扫码支付) |
| 付款银行 | bank_type | 是 | String(16) | CMC | 银行类型，采用字符串类型的银行标识，值列表详见银行类型 |
| 货币类型 | fee_type | 否 | String(16) | CNY | 符合ISO 4217标准的三位字母代码，默认人民币：CNY，其他值列表详见货币类型 |
| 订单金额 | total_fee | 是 | Int | 888 | 订单总金额，单位为分，只能为整数，详见支付金额 |
| 现金支付货币类型 | cash_fee_type | 否 | String(16) | CNY | 符合ISO 4217标准的三位字母代码，默认人民币：CNY，其他值列表详见货币类型 |
| 现金支付金额 | cash_fee | 是 | Int | 100 | 订单现金支付金额，详见支付金额 |
| 微信支付订单号 | transaction_id | 是 | String(32) | 1217752501201407033233368018 | 微信支付订单号 |
| 商户订单号 | out_trade_no | 是 | String(32) | 1217752501201407033233368018 | 商户系统的订单号，与请求一致。 |
| 商家数据包 | attach | 否 | String(128) | 123456 | 商家数据包，原样返回 |
| 支付完成时间 | time_end | 是 | String(14) | 20141030133525 | 订单生成时间，格式为yyyyMMddHHmmss，如2009年12月25日9点10分10秒表示为20091225091010。详见时间规则 |
举例如下：
<xml> <return_code><![CDATA[SUCCESS]]></return_code> <return_msg><![CDATA[OK]]></return_msg> <appid><![CDATA[wx2421b1c4370ec43b]]></appid> <mch_id><![CDATA[10000100]]></mch_id> <device_info><![CDATA[1000]]></device_info> <nonce_str><![CDATA[GOp3TRyMXzbMlkun]]></nonce_str> <sign><![CDATA[D6C76CB785F07992CDE05494BB7DF7FD]]></sign> <result_code><![CDATA[SUCCESS]]></result_code> <openid><![CDATA[oUpF8uN95-Ptaags6E_roPHg7AG0]]></openid> <is_subscribe><![CDATA[Y]]></is_subscribe> <trade_type><![CDATA[MICROPAY]]></trade_type> <bank_type><![CDATA[CCB_DEBIT]]></bank_type> <total_fee>1</total_fee> <coupon_fee>0</coupon_fee> <fee_type><![CDATA[CNY]]></fee_type> <transaction_id><![CDATA[1008450740201411110005820873]]></transaction_id> <out_trade_no><![CDATA[1415757673]]></out_trade_no> <attach><![CDATA[订单额外描述]]></attach> <time_end><![CDATA[20141111170043]]></time_end> </xml>
二、刷卡支付类实现
在微信支付原来的微信支付类文件中，仿照统一支付类的方式，添加刷卡支付类如下：
/**
* 刷卡支付接口类
*/
class MicroPay_pub extends Wxpay_client_pub
{
function __construct()
{
//设置接口链接
$this->url = "https://api.mch.weixin.qq.com/pay/micropay";
//设置curl超时时间
$this->curl_timeout = WxPayConf_pub::CURL_TIMEOUT;
}
/**
* 生成接口参数xml
*/
function createXml()
{
try
{
//检测必填参数
if($this->parameters["out_trade_no"] == null){
throw new SDKRuntimeException("缺少统一支付接口必填参数out_trade_no！"."<br>");
}elseif($this->parameters["body"] == null){
throw new SDKRuntimeException("缺少统一支付接口必填参数body！"."<br>");
}elseif ($this->parameters["total_fee"] == null ) {
throw new SDKRuntimeException("缺少统一支付接口必填参数total_fee！"."<br>");
}elseif ($this->parameters["auth_code"] == null) {
throw new SDKRuntimeException("缺少统一支付接口必填参数auth_code！"."<br>");
}
$this->parameters["appid"] = WxPayConf_pub::APPID;//公众账号ID
$this->parameters["mch_id"] = WxPayConf_pub::MCHID;//商户号
$this->parameters["spbill_create_ip"] = $_SERVER['REMOTE_ADDR'];//终端ip
$this->parameters["nonce_str"] = $this->createNoncestr();//随机字符串
$this->parameters["sign"] = $this->getSign($this->parameters);//签名
// var_dump($this->parameters);
return $this->arrayToXml($this->parameters);
}catch (SDKRuntimeException $e)
{
die($e->errorMessage());
}
}
}原有的基础类和请求类也列出如下：
/**
* 所有接口的基类
*/
class Common_util_pub
{
function __construct() {
}
function trimString($value)
{
$ret = null;
if (null != $value)
{
$ret = $value;
if (strlen($ret) == 0)
{
$ret = null;
}
}
return $ret;
}
/**
* 作用：产生随机字符串，不长于32位
*/
public function createNoncestr( $length = 32 )
{
$chars = "abcdefghijklmnopqrstuvwxyz0123456789";
$str ="";
for ( $i = 0; $i < $length; $i++ ) {
$str.= substr($chars, mt_rand(0, strlen($chars)-1), 1);
}
return $str;
}
/**
* 作用：格式化参数，签名过程需要使用
*/
function formatBizQueryParaMap($paraMap, $urlencode)
{
$buff = "";
ksort($paraMap);
foreach ($paraMap as $k => $v)
{
if($urlencode)
{
$v = urlencode($v);
}
//$buff .= strtolower($k) . "=" . $v . "&";
$buff .= $k . "=" . $v . "&";
}
$reqPar;
if (strlen($buff) > 0)
{
$reqPar = substr($buff, 0, strlen($buff)-1);
}
return $reqPar;
}
/**
* 作用：生成签名
*/
public function getSign($Obj)
{
foreach ($Obj as $k => $v)
{
$Parameters[$k] = $v;
}
//签名步骤一：按字典序排序参数
ksort($Parameters);
$String = $this->formatBizQueryParaMap($Parameters, false);
//echo '【string1】'.$String.'</br>';
//签名步骤二：在string后加入KEY
$String = $String."&key=".WxPayConf_pub::KEY;
//echo "【string2】".$String."</br>";
//签名步骤三：MD5加密
$String = md5($String);
//echo "【string3】 ".$String."</br>";
//签名步骤四：所有字符转为大写
$result_ = strtoupper($String);
//echo "【result】 ".$result_."</br>";
return $result_;
}
/**
* 作用：array转xml
*/
function arrayToXml($arr)
{
$xml = "<xml>";
foreach ($arr as $key=>$val)
{
if (is_numeric($val))
{
$xml.="<".$key.">".$val."</".$key.">";
}
else
$xml.="<".$key."><![CDATA[".$val."]]></".$key.">";
}
$xml.="</xml>";
return $xml;
}
/**
* 作用：将xml转为array
*/
public function xmlToArray($xml)
{
//将XML转为array
$array_data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
return $array_data;
}
/**
* 作用：以post方式提交xml到对应的接口url
*/
public function postXmlCurl($xml,$url,$second=30)
{
//初始化curl
$ch = curl_init();
//设置超时
curl_setopt($ch, CURLOP_TIMEOUT, $second);
//这里设置代理，如果有的话
//curl_setopt($ch,CURLOPT_PROXY, '8.8.8.8');
//curl_setopt($ch,CURLOPT_PROXYPORT, 8080);
curl_setopt($ch,CURLOPT_URL, $url);
curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);
curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE);
//设置header
curl_setopt($ch, CURLOPT_HEADER, FALSE);
//要求结果为字符串且输出到屏幕上
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
//post提交方式
curl_setopt($ch, CURLOPT_POST, TRUE);
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
//运行curl
$data = curl_exec($ch);
curl_close($ch);
//返回结果
if($data)
{
curl_close($ch);
return $data;
}
else
{
$error = curl_errno($ch);
echo "curl出错，错误码:$error"."<br>";
echo "<a href='http://curl.haxx.se/libcurl/c/libcurl-errors.html'>错误原因查询</a></br>";
curl_close($ch);
return false;
}
}
/**
* 作用：使用证书，以post方式提交xml到对应的接口url
*/
function postXmlSSLCurl($xml,$url,$second=30)
{
$ch = curl_init();
//超时时间
curl_setopt($ch,CURLOPT_TIMEOUT,$second);
//这里设置代理，如果有的话
//curl_setopt($ch,CURLOPT_PROXY, '8.8.8.8');
//curl_setopt($ch,CURLOPT_PROXYPORT, 8080);
curl_setopt($ch,CURLOPT_URL, $url);
curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);
curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE);
//设置header
curl_setopt($ch,CURLOPT_HEADER,FALSE);
//要求结果为字符串且输出到屏幕上
curl_setopt($ch,CURLOPT_RETURNTRANSFER,TRUE);
//设置证书
//使用证书：cert 与 key 分别属于两个.pem文件
//默认格式为PEM，可以注释
curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM');
curl_setopt($ch,CURLOPT_SSLCERT, dirname(__FILE__).WxPayConf_pub::SSLCERT_PATH);
//默认格式为PEM，可以注释
curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');
curl_setopt($ch,CURLOPT_SSLKEY, dirname(__FILE__).WxPayConf_pub::SSLKEY_PATH);
//post提交方式
curl_setopt($ch,CURLOPT_POST, true);
curl_setopt($ch,CURLOPT_POSTFIELDS,$xml);
$data = curl_exec($ch);
//返回结果
if($data){
curl_close($ch);
return $data;
}
else {
$error = curl_errno($ch);
echo "curl出错，错误码:$error"."<br>";
echo "<a href='http://curl.haxx.se/libcurl/c/libcurl-errors.html'>错误原因查询</a></br>";
curl_close($ch);
return false;
}
}
/**
* 作用：打印数组
*/
function printErr($wording='',$err='')
{
print_r('<pre class="brush:php;toolbar:false">');
echo $wording."</br>";
var_dump($err);
print_r('');
}
}
/**
* 请求型接口的基类
*/
class Wxpay_client_pub extends Common_util_pub
{
var $parameters;//请求参数，类型为关联数组
public $response;//微信返回的响应
public $result;//返回参数，类型为关联数组
var $url;//接口链接
var $curl_timeout;//curl超时时间
/**
* 作用：设置请求参数
*/
function setParameter($parameter, $parameterValue)
{
$this->parameters[$this->trimString($parameter)] = $this->trimString($parameterValue);
}
/**
* 作用：设置标配的请求参数，生成签名，生成接口参数xml
*/
function createXml()
{
$this->parameters["appid"] = WxPayConf_pub::APPID;//公众账号ID
$this->parameters["mch_id"] = WxPayConf_pub::MCHID;//商户号
$this->parameters["nonce_str"] = $this->createNoncestr();//随机字符串
$this->parameters["sign"] = $this->getSign($this->parameters);//签名
return $this->arrayToXml($this->parameters);
}
/**
* 作用：post请求xml
*/
function postXml()
{
$xml = $this->createXml();
$this->response = $this->postXmlCurl($xml,$this->url,$this->curl_timeout);
return $this->response;
}
/**
* 作用：使用证书post请求xml
*/
function postXmlSSL()
{
$xml = $this->createXml();
$this->response = $this->postXmlSSLCurl($xml,$this->url,$this->curl_timeout);
return $this->response;
}
/**
* 作用：获取结果，默认不使用证书
*/
function getResult()
{
$this->postXml();
$this->result = $this->xmlToArray($this->response);
return $this->result;
}
}三、发起支付
在程序中，获得用户的授权码，并填入到$authcode参数中。授权码就是条码上的那一串18位纯数字，以10、11、12、13、14、15开头
其他参数则自动生成或者手动输入指定。
调用函数如下所示
//全局引入微信支付类
Vendor('Wxpay.WxPayPubHelper.WxPayPubHelper');
//使用统一支付接口
$microPay = new \MicroPay_pub();
//设置统一支付接口参数
$microPay->setParameter("body","方倍商户刷卡支付");//商品描述
$microPay->setParameter("out_trade_no", "$out_trade_no");//商户订单号
$microPay->setParameter("total_fee", $total_fee);//总金额
$microPay->setParameter("auth_code", $authcode);//授权码
//获取统一支付接口结果
$microPayResult = $microPay->getResult();
//3. 异常判断
if (!isset($microPayResult["result_code"]) || ($microPayResult["result_code"] == "FAIL")) {
$this->resRpcError(isset($microPayResult['result_code']) ? $microPayResult['err_code_des'] : $microPayResult['return_msg'], "21000");
}【相关推荐】
1. 微信公众号平台源码下载
3. 微信开发之微信支付
The above is the detailed content of Detailed explanation of credit card payment examples for WeChat payment development. For more information, please follow other related articles on the PHP Chinese website!
Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：WeChat payment for WeChat developmentNext article：WeChat payment for WeChat development
Related articles
See more- Detailed explanation and simple usage of WeChat mini program textarea
- PHP WeChat public account development (2) Baidu BAE construction and database use
- php WeChat public account development (3) php implements simple WeChat text communication
- php WeChat public account development (4) php implements custom keyword reply
- PHP version of WeChat store calling api sample code