


Detailed explanation of practical cases for implementing WeChat payment with PHP
This time I will bring you a detailed explanation of a practical case for implementing WeChat payment with PHP. What are the precautions for implementing WeChat payment with PHP? The following is a practical case, let's take a look.
Preliminary preparation:
1. WeChat authentication service account and activate WeChat payment2.WeChat payment SDK , download address: https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=11_13. Log in to the WeChat payment platform https://pay.weixin.qq .com/index.php/account/api_certDownload payment certificateMethod steps:
1.demo (1) Download the official demo, the file name is WxpayAPI_php_v3, rename the file to wxpay, for the convenience of writing the directory later; (2) Open the lib folder In the WxPay.Api.php file, there is a curl network request configuration code on line 537:curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,TRUE); curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,2);//严格校验
curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE); curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,2);//严格校验
const APPID = '公众账号APPID'; const MCHID = '商户号'; const KEY = '商户支付密钥'; const APPSECRET = '公众帐号secert';
if($needSign == true && $this->GetReturn_code($return_code) == "SUCCESS") { $this->SetSign(); }
if($needSign == true && $this->GetReturn_code() == "SUCCESS") { $this->SetSign(); }
//①、获取用户openid $tools = new JsApiPay(); $openId = $tools->GetOpenid();
//②、统一下单 $input = new WxPayUnifiedOrder(); $input->SetBody("test"); $input->SetAttach("test"); $input->SetOut_trade_no(WxPayConfig::MCHID.date("YmdHis")); $input->SetTotal_fee("1"); $input->SetTime_start(date("YmdHis")); $input->SetTime_expire(date("YmdHis", time() + 600)); $input->SetGoods_tag("test"); $input->SetNotify_url("http://paysdk.weixin.qq.com/example/notify.php"); $input->SetTrade_type("JSAPI"); $input->SetOpenid($openId); $order = WxPayApi::unifiedOrder($input); echo '<font color="#f00"><b>统一下单支付单信息</b></font><br/>'; printf_info($order); $jsApiParameters = $tools->GetJsApiParameters($order);
Callback function, here Several parameters need to be modified:
A. Product name:$input->SetBody("test");
$input->SetOut_trade_no(WxPayConfig::MCHID.date("YmdHis"));
$input->SetTotal_fee("1");
database operations.
$input->SetNotify_url(http://paysdk.weixin.qq.com/example/notify.php);
$input->SetAttach("test");
<script type="text/javascript"> //调用微信JS api 支付 function jsApiCall() { WeixinJSBridge.invoke( 'getBrandWCPayRequest', <?php echo $jsApiParameters; ?>, function(res){ WeixinJSBridge.log(res.err_msg); alert(res.err_code+res.err_desc+res.err_msg); } ); } function callpay() { if (typeof WeixinJSBridge == "undefined"){ if( document.addEventListener ){ document.addEventListener('WeixinJSBridgeReady', jsApiCall, false); }else if (document.attachEvent){ document.attachEvent('WeixinJSBridgeReady', jsApiCall); document.attachEvent('onWeixinJSBridgeReady', jsApiCall); } }else{ jsApiCall(); } } </script>
res.err_msg 为get_brand_wcpay_request:cancel
表明前端判断的取消支付,es.err_msg 为get_brand_wcpay_request:ok 表明前端判断的支付成功,我们可以根据这个将支付跳转到成功页面。
(4)支持成功回调
通过前端jsApiCall()函数可以监听支付结果,但是这个并不可信。确认是否支付成功还是应当通过notify.php 处理业务逻辑。前边配置好了支付验证链接SetNotify_url(),支付完成后,微信服务器会根据链接自动请求你的notify.php文件,打开这个文件,其实这个文件最主要的代码就两行:
$notify = new PayNotifyCallBack(); $notify->Handle(false);
由此跟踪到WxPay.Notify.php类文件的Handle()函数:
/** * * 回调入口 * @param bool $needSign 是否需要签名输出 */ final public function Handle($needSign = true) { $msg = "OK"; //当返回false的时候,表示notify中调用NotifyCallBack回调失败获取签名校验失败,此时直接回复失败 $result = WxpayApi::notify(array($this, 'NotifyCallBack'), $msg); if($result == false){ $this->SetReturn_code("FAIL"); $this->SetReturn_msg($msg); $this->ReplyNotify(false); return; } else { //该分支在成功回调到NotifyCallBack方法,处理完成之后流程 $this->SetReturn_code("SUCCESS"); $this->SetReturn_msg("OK"); } $this->ReplyNotify($needSign); }
主要代码:
$result = WxpayApi::notify(array($this, 'NotifyCallBack'), $msg);
然后来到WxPay.Api.php文件的第411行,notify()函数:
/** * * 支付结果通用通知 * @param function $callback * 直接回调函数使用方法: notify(you_function); * 回调类成员函数方法:notify(array($this, you_function)); * $callback 原型为:function function_name($data){} */ public static function notify($callback, &$msg) { //获取通知的数据 $xml = $GLOBALS['HTTP_RAW_POST_DATA']; //file_put_contents('log.txt',$xml,FILE_APPEND); //如果返回成功则验证签名 try { $result = WxPayResults::Init($xml); } catch (WxPayException $e){ $msg = $e->errorMessage(); return false; } return call_user_func($callback, $result); }
这里面的$xml=$GLOBALS['HTTP_RAW_POST_DATA'],就是支付成功后用户返回给你的一个结果,他是一个xml格式的字符串。
我们可以将这里返回的xml数据记录下来,然后打开看看$out_trade_no就是在支付之前我自己设置的订单号码,$attach就是设置的附加参数。
得到了这个订单号,然后我就直接在下面写支付成功后的逻辑了,比如改变数据库中的数据等等。
这样 微信支付的 JsApi支付就大致分析完成了。
这是集成了官方的SDK实现的,如果不使用SDK,可以使用更简单的方法,见:PHP实现微信支付(jsapi支付)和退款(无需集成支付SDK)
相信看了本文案例你已经掌握了方法,更多精彩请关注php中文网其它相关文章!
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