php微信支付接口开发程序(流程已通)
微信支付接口现在也慢慢的像支付宝一个可以利用api接口来实现第三方网站或应用进行支付了,下文整理了一个php微信支付接口开发程序并且己测试,有兴趣的朋友可进入参考。
必要条件:
appid //公众号后台开发者中心获得(和邮件内的一样) mchid//邮件内获得 key//商户后台自己设置 appsecret //公众号开发者中心获得
两个证书文件,邮件内获得 apiclient_cert.pem apiclient_key.pem
注意事项:
公众号后台微信支付-》开发配置-》新增测试目录和测试个人微信号。
开发者中心-》网页授权获取用户基本信息-》修改成你的测试域名。否则会出现redirect_uri 参数错误
——————————后续待完善——————-
微信支付就绪页面后台自行了三次操作:
1.获取openid
//使用jsapi接口
代码如下 | 复制代码 |
$jsApi = new JsApi_pub(); //=========步骤1:网页授权获取用户openid============ //通过code获得openid if (!isset($_GET['code'])) { //触发微信返回code码 $url = $jsApi->createOauthUrlForCode(WxPayConf_pub::JS_API_CALL_URL); //echo $url; Header("Location: $url"); }else { //获取code码,以获取openid $code = $_GET['code']; $jsApi->setCode($code); $openid = $jsApi->getOpenid(); } |
刚开始的时候第一步也遇到问题,没饭获得openid这个和部分服务器有关,demo内用的是curl获取的方式。奇怪我的服务器curl一直无法获取到。后来改成file_get_contents可以正常获取了。可这并不是解决之道。因为后面还需要用到更多的curl操作。看到开发文档里面有一个地方写证书操作需要libcurl 7.20.1以上版本,然后我就一直在整服务器想把linux的php curl版本提高。最后面我是换到了另外一台windows服务器就好了。先暂时这样吧,下次需要用的时候再调试。
第二步:获取与支付订单号id
代码如下 | 复制代码 |
$unifiedOrder = new UnifiedOrder_pub(); //var_dump($unifiedOrder); //设置统一支付接口参数 //设置必填参数 //appid已填,商户无需重复填写 //mch_id已填,商户无需重复填写 //noncestr已填,商户无需重复填写 //spbill_create_ip已填,商户无需重复填写 //sign已填,商户无需重复填写 $unifiedOrder->setParameter("openid","$openid");//商品描述 $unifiedOrder->setParameter("body","贡献一分钱");//商品描述 //自定义订单号,此处仅作举例 $timeStamp = time(); $out_trade_no = WxPayConf_pub::APPID."$timeStamp"; $unifiedOrder->setParameter("out_trade_no","$out_trade_no");//商户订单号 $unifiedOrder->setParameter("total_fee","1");//总金额 $unifiedOrder->setParameter("notify_url",WxPayConf_pub::NOTIFY_URL);//通知地址 $unifiedOrder->setParameter("trade_type","JSAPI");//交易类型 //非必填参数,商户可根据实际情况选填 //$unifiedOrder->setParameter("sub_mch_id","XXXX");//子商户号 //$unifiedOrder->setParameter("device_info","XXXX");//设备号 //$unifiedOrder->setParameter("attach","XXXX");//附加数据 //$unifiedOrder->setParameter("time_start","XXXX");//交易起始时间 //$unifiedOrder->setParameter("time_expire","XXXX");//交易结束时间 //$unifiedOrder->setParameter("goods_tag","XXXX");//商品标记 //$unifiedOrder->setParameter("openid","XXXX");//用户标识 //$unifiedOrder->setParameter("product_id","XXXX");//商品ID $prepay_id = $unifiedOrder->getPrepayId(); //echo 'prepay_id:'; var_dump($prepay_id); |
这一步也遇到非常多的问题。
首先微信支付测试比较困难,只有在微信内才可以测试。我就用手机刷来刷去。其次使用var_dump调试也不好使额。打印一些 xml格式的文件只显示字符长度,不显示内容。于是用log的形式写在服务器上调试,log代码:
代码如下 | 复制代码 |
// 打印log function log_d($word) { $log_name="./logd.log";//log文件路径 $fp = fopen($log_name,"a"); flock($fp, LOCK_EX) ; fwrite($fp,"执行日期:".strftime("%Y-%m-%d-%H:%M:%S",time())."n".$word."nn"); flock($fp, LOCK_UN); fclose($fp); } |
在demo里面的 WxPayPubHelper.php 里面 用 $this->log_d(xxx);调用。
刚开始的时候由于给我的mchid和 appid不匹配一直报错。。是他们给错我账号了。刚开始我也不懂乱试。这一步的调试在 getPrepayId()内 var_dump($this->result); 就能看到错误代码。
第三步:生成支付前端 js代码就绪到网页上:
代码如下 | 复制代码 |
$jsApi->setPrepayId($prepay_id); $jsApiParameters = $jsApi->getParameters(); ———————-点击前往支付————————- |
这部分又遇到了问题:
android返回“System:Access_denied”,ios返回”access_control:not_allowed”
搜了很多百度。其实早就看到了这个东西一直没注意!
发起授权请求的页面必须是在授权目录下的页面,而不能是存在与子目录中。否则会返回错误
支付文件我放在了/域名/pay/demo/
刚开始的时候我一直是到/域名/pay/结尾以为就可以了。支持子目录,结果是不行的!。
—————————最后看下图—————



—————–流程中的xmljs——————–
待提交生成与支付订单id:
代码如下 | 复制代码 |
提交后返回正确,其中包含了perpay_id: 生成支付用的js : { "appId": "wx8888888888888888", "timeStamp": "1414411784", "nonceStr": "gbwr71b5no6q6ne18c8up1u7l7he2y75", "package": "prepay_id=wx201410272009395522657a690389285100", "signType": "MD5", "paySign": "9C6747193720F851EB876299D59F6C7D" } 支付成功后返回的通知xml: |
这其中的数据我随意了的,大家就参考下格式吧。注意大小写敏感。

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