ThinkPHP 微信支付demo v3.3

<?php namespace Admin\Controller; use Think\Controller; class WeixinController extends Controller { var $parameters;//静态链接参数 var $APPID = ''; //受理商ID，身份标识 var $MCHID = ''; //商户支付密钥Key。审核通过后，在微信发送的邮件中查看 var $KEY = ''; //JSAPI接口中获取openid，审核后在公众平台开启开发模式后可查看 var $APPSECRET = ''; //=======【JSAPI路径设置】=================================== //获取access_token过程中的跳转uri，通过跳转将code传入jsapi支付页面 var $JS_API_CALL_URL = ''; //=======【证书路径设置】===================================== //证书路径,注意应该填写绝对路径 var $SSLCERT_PATH = '/xxx/xxx/xxxx/WxPayPubHelper/cacert/apiclient_cert.pem'; var $SSLKEY_PATH = '/xxx/xxx/xxxx/WxPayPubHelper/cacert/apiclient_key.pem'; //=======【异步通知url设置】=================================== //异步通知url，商户根据实际开发过程设定 //C('url')."admin.php/order/notify_url.html"; var $NOTIFY_URL = ''; //=======【curl超时设置】=================================== //本例程通过curl使用HTTP POST方法，此处可修改其超时时间，默认为30秒 var $CURL_TIMEOUT = 30; var $prepay_id; /** * 作用：生成可以获得code的url */ function createOauthUrlForCode($redirectUrl) { $urlObj["appid"] = $this->APPID; $urlObj["redirect_uri"] = urlencode("$redirectUrl"."&showwxpaytitle=1"); $urlObj["response_type"] = "code"; $urlObj["scope"] = "snsapi_base"; $urlObj["state"] = "STATE"."#wechat_redirect"; $bizString = $this->formatBizQueryParaMap($urlObj, false); return "https://open.weixin.qq.com/connect/oauth2/authorize?".$bizString; } /** * 作用：格式化参数，签名过程需要使用 */ function formatBizQueryParaMap($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 $reqPar; } /** * 作用：生成可以获得openid的url */ function createOauthUrlForOpenid($code) { $urlObj["appid"] = $this->APPID; $urlObj["secret"] = $this->APPSECRET; $urlObj["code"] = $code; $urlObj["grant_type"] = "authorization_code"; $bizString = $this->formatBizQueryParaMap($urlObj, false); return "https://api.weixin.qq.com/sns/oauth2/access_token?".$bizString; } /** * 作用：通过curl向微信提交code，以获取openid */ function getOpenid($code) { $url = $this->createOauthUrlForOpenid($code); //初始化curl $ch = curl_init(); //设置超时 curl_setopt($ch, CURLOP_TIMEOUT, $this->curl_timeout); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE); curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE); curl_setopt($ch, CURLOPT_HEADER, FALSE); curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE); //运行curl，结果以jason形式返回 $res = curl_exec($ch); curl_close($ch); //取出openid $data = json_decode($res,true); $this->openid = $data['openid']; return $this->openid; } public function js_api_call(){ /** * 微信支付的核心方法，请在上面设置已经认证好的微信号的APPID和APPSECRET并设置ou2.0的授权目录 已确定可以获取到openid * 注意如果全局使用了唯一的APPID和APPSECRET 那么你其他的业务最好也是使用该参数获取的openid 根据微信开发文档的描述可能出现openid不一致的情况 * 虽然我没测试过 233333 * **/ $orderid = $_GET['orderid']; if (!isset($_GET['code'])){ $url = $this->createOauthUrlForCode($this->JS_API_CALL_URL."?orderid=$orderid"); Header("Location: $url"); }else { $openid = $this->getOpenId($_GET['code'],$APPID,$APPSECRET); } //此处可以动态获取数据库中的MCHID和KEY $this->APPID = $order['user_weizhifu_APPID']; $this->MCHID =// 动态MCHID; $this->KEY = // 动态KEY; $this->APPSECRET = $order['user_weizhifu_Secret']; //=========步骤2：使用统一支付接口，获取prepay_id============ //使用统一支付接口 $this->parameters['openid']=$openid;//商品描述 $this->parameters['body']="订单结算";//商品描述 $this->parameters['out_trade_no'] = $orderid; $this->parameters['total_fee'] = $order['order_toolprice']*100; //此处单位为分 出现小数点接口报错必须是整数 $this->parameters['notify_url'] = $this->NOTIFY_URL; $this->parameters['trade_type'] = "JSAPI"; $prepay_id = $this->getPrepayId(); //=========步骤3：使用jsapi调起支付============ $this->prepay_id = $prepay_id; $jsApiParameters = $this->getParameters(); $this->assign("jsApiParameters",$jsApiParameters); $this->assign("orderid",$orderid); $this->display(); } /** * 作用：设置jsapi的参数 */ public function getParameters() { $jsApiObj["appId"] = $this->APPID; $timeStamp = time(); $jsApiObj["timeStamp"] = "$timeStamp"; $jsApiObj["nonceStr"] = $this->createNoncestr(); $jsApiObj["package"] = "prepay_id=$this->prepay_id"; $jsApiObj["signType"] = "MD5"; $jsApiObj["paySign"] = $this->getSign($jsApiObj); $this->parameters = json_encode($jsApiObj); return $this->parameters; } /** * 获取prepay_id */ function getPrepayId() { $result = $this->xmlToArray($this->postXml()); $prepay_id = $result["prepay_id"]; return $prepay_id; } /** * 作用：将xml转为array */ public function xmlToArray($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：post请求xml */ function postXml() { $xml = $this->createXml(); return $this->postXmlCurl($xml,"https://api.mch.weixin.qq.com/pay/unifiedorder",$this->curl_timeout); } /** * 作用：以post方式提交xml到对应的接口url */ public function postXmlCurl($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：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"] = $this->APPID;//公众账号ID $this->parameters["mch_id"] = $this->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：产生随机字符串，不长于32位 */ public function createNoncestr( $length = 32 ) { $chars = "abcdefghijklmnopqrstuvwxyz0123456789"; $s