网上很多PHP支付宝支付接入教程比较复杂，需要配置和引入很多文件。整理后给出一个单文件版，希望能给大家想接入支付宝支付带来一些帮助和参考。一个PHP文件处理支付宝系列：https://github.com/dedemao/al...一个PHP文件处理微信支付系列：https://github.com/dedemao/we...打开并实现手机浏览器在微信中打开效果实现效果注：兼容微信浏览器取决于支付宝官方提供的demo（alipay_in_weixin_demo）中的两个文件，即：ap.js和pay.htm环境依赖PHP5.0以上，并且需要开启CURL服务，SSL服务。如果需要兼容微信浏览器，还需要依赖ap.js和pay.htm。注意事项1.文件开头的配置信息必须完整。2、商户私钥需要填写签名算法类型对应的私钥。如何生成密钥引用：2.1https://docs.open.alipay.com/...2.2https://docs.open.alipay.com/...Code密钥管理->打开平台密钥，填写添加了电脑网站支付的应用APPID$returnUrl='http://www.xxx.com/支付宝/return.php';//支付成功后的同步回调地址$notifyUrl='http://www.xxx.com/alipay/notify.php';//支付成功后的异步回调地址$outTradeNo=uniqid();//自己的商品订单号$payAmount=0.01;//支付金额，单位：元$orderName='paymenttest';//订单标题$signType='RSA2';//签名算法类型，支持RSA2和RSA，推荐使用RSA2//商户私钥，填写签名算法类型对应的私钥，如何生成密钥参考：https://docs.open.alipay.com/291/105971andhttps://docs.open.alipay.com/200/105310$saPrivateKey='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';$aliPay=newAlipayService($appid,$returnUrl,$notifyUrl,$saPrivateKey);$payConfigs=$aliPay->doPay($payAmount,$outTradeNo,$orderName,$returnUrl,$notifyUrl);classAlipayService{protected$appId;受保护的$returnUrl；受保护的$notifyUrl；受保护的$字符集；//私有价值protected$rsaPrivateKey;公共函数__construct($appid,$returnUrl,$notifyUrl,$saPrivateKey){$this->appId=$appid;$this->returnUrl=$returnUrl;$this->notifyUrl=$notifyUrl;$this->charset='utf8';$this->rsaPrivateKey=$saPrivateKe是；}/***发起订单*@paramfloat$totalFee收取总费用的单位*@paramstring$outTradeNo唯一订单号*@paramstring$orderName订单名称*@paramstring$notifyUrl支付结果通知url没有有问号*@paramstring$timestamp订单发起时间*@returnarray*/publicfunctiondoPay($totalFee,$outTradeNo,$orderName,$returnUrl,$notifyUrl){//请求参数$requestConfigs=array('out_trade_no'=>$outTradeNo,'product_code'=>'QUICK_WAP_WAY','total_amount'=>$totalFee,//单元元素'subject'=>$orderName,//订单标题);$commonConfigs=array(//公共参数'app_id'=>$this->appId,'method'=>'alipay.trade.wap.pay',//接口名称'format'=>'JSON','return_url'=>$returnUrl,'charset'=>$this->charset,'sign_type'=>'RSA2','timestamp'=>date('Y-m-dH:i:s'),'version'=>'1.0','notify_url'=>$notifyUrl,'biz_content'=>json_encode($requestConfigs),);$commonConfigs["sign"]=$this->generateSign($commonConfigs,$commonConfigs['sign_type']);返回$commonConfigs；}publicfunctiongenerateSign($params,$signType="RSA"){返回$this->sign($this->getSignContent($params),$signType);}受保护的函数符号($data,$signType="RSA"){$priKey=$this->rsaPrivateKey;$res="-----开始RSA私钥-----\n".wordwrap($priKey,64,"\n",true)。"\n-----结束RSA私钥-----";($res)ordie('您使用的私钥格式错误，请检查RSA私钥配置');如果("RSA2"==$signType){openssl_sign($data,$sign,$res,version_compare(PHP_VERSION,'5.4.0','<')?SHA256:OPENSSL_ALGO_SHA256);//OPENSSL_ALGO_SHA256是php5.仅支持4.8或以上版本}else{openssl_sign($data,$sign,$res);}$sign=base64_encode($sign);返回$符号；}/***校试$value是否非空*如果没有设置，返回true；*如果为null，则返回true；**/protectedfunctioncheckEmpty($value){if(!isset($value))返回真；如果（$value===null）返回真；如果（修剪（$值）===“”）返回真；返回假；}publicfunctiongetSignContent($params){ksort($params);$stringToBeSigned="";$i=0;foreach($paramsas$k=>$v){if(false===$this->checkEmpty($v)&&"@"!=substr($v,0,1)){//转换成目标字符集$v=$this->characet($v,$this->charset);如果($i==0){$stringToBeSigned.="$k".“=”。“$v”；}else{$stringToBeSigned.="&"."$k"。“=”。“$v”；$i++;}}未设置($k,$v);返回$stringToBeSigned；}/***转换字符集合编码*@param$data*@param$targetCharset*@returnstring*/functioncharacet($data,$targetCharset){if(!empty($data)){$fileType=$this->字符集；如果(strcasecmp($fileType,$targetCharset)!=0){$data=mb_convert_encoding($data,$targetCharset,$fileType);}}返回$数据；}}functionisWeixin(){if(strpos($_SERVER['HTTP_USER_AGENT'],'MicroMessenger')!==false){returntrue;}returnfalse;}$queryStr=http_build_query($payConfigs);if(isWeixin()):?>
