微信小程序与php 实现微信支付的简单实例
微信小程序与php实现微信支付的简单实例
小程序访问地址:
payfee.PHP:
include'WeixinPay.php'; $appid=''; $openid=$_GET['id']; $mch_id=''; $key=''; $out_trade_no=$mch_id.time(); $total_fee=$_GET['fee']; if(empty($total_fee))//押金 { $body="充值押金"; $total_fee=floatval(99*100); } else{ $body="充值余额"; $total_fee=floatval($total_fee*100); } $weixinpay=newWeixinPay($appid,$openid,$mch_id,$key,$out_trade_no,$body,$total_fee); $return=$weixinpay->pay(); echojson_encode($return);
WeixinPay.php:
appid=$appid; $this->openid=$openid; $this->mch_id=$mch_id; $this->key=$key; $this->out_trade_no=$out_trade_no; $this->body=$body; $this->total_fee=$total_fee; } publicfunctionpay(){ //统一下单接口 $return=$this->weixinapp(); return$return; } //统一下单接口 privatefunctionunifiedorder(){ $url='https://api.mch.weixin.qq.com/pay/unifiedorder'; $parameters=array( 'appid'=>$this->appid,//小程序ID 'mch_id'=>$this->mch_id,//商户号 'nonce_str'=>$this->createNoncestr(),//随机字符串 //'body'=>'test',//商品描述 'body'=>$this->body, //'out_trade_no'=>'2015450806125348',//商户订单号 'out_trade_no'=>$this->out_trade_no, //'total_fee'=>floatval(0.01*100),//总金额单位分 'total_fee'=>$this->total_fee, //'spbill_create_ip'=>$_SERVER['REMOTE_ADDR'],//终端IP 'spbill_create_ip'=>'192.168.0.161',//终端IP 'notify_url'=>'http://www.weixin.qq.com/wxpay/pay.php',//通知地址确保外网能正常访问 'openid'=>$this->openid,//用户id 'trade_type'=>'JSAPI'//交易类型 ); //统一下单签名 $parameters['sign']=$this->getSign($parameters); $xmlData=$this->arrayToXml($parameters); $return=$this->xmlToArray($this->postXmlCurl($xmlData,$url,60)); return$return; } privatestaticfunctionpostXmlCurl($xml,$url,$second=30) { $ch=curl_init(); //设置超时 curl_setopt($ch,CURLOPT_TIMEOUT,$second); curl_setopt($ch,CURLOPT_URL,$url); curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE); curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE);//严格校验 //设置header curl_setopt($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); curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,20); curl_setopt($ch,CURLOPT_TIMEOUT,40); set_time_limit(0); //运行curl $data=curl_exec($ch); //返回结果 if($data){ curl_close($ch); return$data; }else{ $error=curl_errno($ch); curl_close($ch); thrownewWxPayException("curl出错,错误码:$error"); } } //数组转换成xml privatefunctionarrayToXml($arr){ $xml=""; foreach($arras$key=>$val){ if(is_array($val)){ $xml.="<".$key.">".arrayToXml($val)."".$key.">"; }else{ $xml.="<".$key.">".$val."".$key.">"; } } $xml.=" "; return$xml; } //xml转换成数组 privatefunctionxmlToArray($xml){ //禁止引用外部xml实体 libxml_disable_entity_loader(true); $xmlstring=simplexml_load_string($xml,'SimpleXMLElement',LIBXML_NOCDATA); $val=json_decode(json_encode($xmlstring),true); return$val; } //微信小程序接口 privatefunctionweixinapp(){ //统一下单接口 $unifiedorder=$this->unifiedorder(); //print_r($unifiedorder); $parameters=array( 'appId'=>$this->appid,//小程序ID 'timeStamp'=>''.time().'',//时间戳 'nonceStr'=>$this->createNoncestr(),//随机串 'package'=>'prepay_id='.$unifiedorder['prepay_id'],//数据包 'signType'=>'MD5'//签名方式 ); //签名 $parameters['paySign']=$this->getSign($parameters); return$parameters; } //作用:产生随机字符串,不长于32位 privatefunctioncreateNoncestr($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:生成签名 privatefunctiongetSign($Obj){ foreach($Objas$k=>$v){ $Parameters[$k]=$v; } //签名步骤一:按字典序排序参数 ksort($Parameters); $String=$this->formatBizQueryParaMap($Parameters,false); //签名步骤二:在string后加入KEY $String=$String."&key=".$this->key; //签名步骤三:MD5加密 $String=md5($String); //签名步骤四:所有字符转为大写 $result_=strtoupper($String); return$result_; } ///作用:格式化参数,签名过程需要使用 privatefunctionformatBizQueryParaMap($paraMap,$urlencode){ $buff=""; ksort($paraMap); foreach($paraMapas$k=>$v){ if($urlencode){ $v=urlencode($v); } $buff.=$k."=".$v."&"; } $reqPar; if(strlen($buff)>0){ $reqPar=substr($buff,0,strlen($buff)-1); } return$reqPar; } }
小程序页面处理:
wx.request({ url:'https://www.yourhost.com/weixin/WeiActivity/payfee.php',//改成你自己的链接 header:{ 'Content-Type':'application/x-www-form-urlencoded' }, method:'POST', success:function(res){ console.log(res.data); console.log('调起支付'); wx.requestPayment({ 'timeStamp':res.data.timeStamp, 'nonceStr':res.data.nonceStr, 'package':res.data.package, 'signType':'MD5', 'paySign':res.data.paySign, 'success':function(res){ console.log('success'); wx.showToast({ title:'支付成功', icon:'success', duration:3000 }); }, 'fail':function(res){ console.log('fail'); }, 'complete':function(res){ console.log('complete'); } }); }, fail:function(res){ console.log(res.data) } });
回调url:notify.php
$postXml=$GLOBALS["HTTP_RAW_POST_DATA"];//接收微信参数 if(empty($postXml)){ returnfalse; } //将xml格式转换成数组 functionxmlToArray($xml){ //禁止引用外部xml实体 libxml_disable_entity_loader(true); $xmlstring=simplexml_load_string($xml,'SimpleXMLElement',LIBXML_NOCDATA); $val=json_decode(json_encode($xmlstring),true); return$val; } $attr=xmlToArray($postXml); $total_fee=$attr[total_fee]; $open_id=$attr[openid]; $out_trade_no=$attr[out_trade_no]; $time=$attr[time_end];
以上几步你就可以完成小程序的微信支付与php完美的结合起来
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