初始化代码
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233
application/api/wxapi/pay/JsApiPay.php
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233
application/api/wxapi/pay/JsApiPay.php
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<?php
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namespace app\api\wxapi\pay;
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/**
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*
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* example目录下为简单的支付样例，仅能用于搭建快速体验微信支付使用
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* 样例的作用仅限于指导如何使用sdk，在安全上面仅做了简单处理， 复制使用样例代码时请慎重
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* 请勿直接直接使用样例对外提供服务
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*
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**/
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/**
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*
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* JSAPI支付实现类
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* 该类实现了从微信公众平台获取code、通过code获取openid和access_token、
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* 生成jsapi支付js接口所需的参数、生成获取共享收货地址所需的参数
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*
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* 该类是微信支付提供的样例程序，商户可根据自己的需求修改，或者使用lib中的api自行开发
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*
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* @author widy
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*
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*/
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class JsApiPay
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{
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/**
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*
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* 网页授权接口微信服务器返回的数据，返回样例如下
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* {
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* "access_token":"ACCESS_TOKEN",
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* "expires_in":7200,
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* "refresh_token":"REFRESH_TOKEN",
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* "openid":"OPENID",
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* "scope":"SCOPE",
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* "unionid": "o6_bmasdasdsad6_2sgVt7hMZOPfL"
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* }
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* 其中access_token可用于获取共享收货地址
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* openid是微信支付jsapi支付接口必须的参数
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* @var array
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*/
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public $data = null;
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/**
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*
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* 通过跳转获取用户的openid，跳转流程如下：
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* 1、设置自己需要调回的url及其其他参数，跳转到微信服务器https://open.weixin.qq.com/connect/oauth2/authorize
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* 2、微信服务处理完成之后会跳转回用户redirect_uri地址，此时会带上一些参数，如：code
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*
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* @return 用户的openid
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*/
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public function GetOpenid()
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{
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//通过code获得openid
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if (!isset($_GET['code'])){
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//触发微信返回code码
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$baseUrl = urlencode('http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'].$_SERVER['QUERY_STRING']);
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$url = $this->_CreateOauthUrlForCode($baseUrl);
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Header("Location: $url");
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exit();
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} else {
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//获取code码，以获取openid
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$code = $_GET['code'];
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$openid = $this->getOpenidFromMp($code);
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return $openid;
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}
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}
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/**
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*
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* 获取jsapi支付的参数
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* @param array $UnifiedOrderResult 统一支付接口返回的数据
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* @throws WxPayException
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*
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* @return json数据，可直接填入js函数作为参数
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*/
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public function GetJsApiParameters($UnifiedOrderResult)
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{
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if(!array_key_exists("appid", $UnifiedOrderResult)
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|| !array_key_exists("prepay_id", $UnifiedOrderResult)
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|| $UnifiedOrderResult['prepay_id'] == "")
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{
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throw new WxPayException("参数错误");
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}
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$jsapi = new WxPayJsApiPay();
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$jsapi->SetAppid($UnifiedOrderResult["appid"]);
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$timeStamp = time();
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$jsapi->SetTimeStamp("$timeStamp");
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$jsapi->SetNonceStr(WxPayApi::getNonceStr());
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$jsapi->SetPackage("prepay_id=" . $UnifiedOrderResult['prepay_id']);
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$config = new WxPayConfig();
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$jsapi->SetPaySign($jsapi->MakeSign($config));
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$parameters = json_encode($jsapi->GetValues());
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return $parameters;
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}
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/**
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*
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* 通过code从工作平台获取openid机器access_token
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* @param string $code 微信跳转回来带上的code
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*
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* @return openid
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*/
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public $curl_timeout=30;
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public function GetOpenidFromMp($code)
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{
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$url = $this->__CreateOauthUrlForOpenid($code);
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//初始化curl
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$ch = curl_init();
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$curlVersion = curl_version();
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$config = new WxPayConfig();
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$ua = "WXPaySDK/3.0.9 (".PHP_OS.") PHP/".PHP_VERSION." CURL/".$curlVersion['version']." "
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.$config->GetMerchantId();
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//设置超时
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curl_setopt($ch, CURLOPT_TIMEOUT, $this->curl_timeout);
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curl_setopt($ch, CURLOPT_URL, $url);
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curl_setopt($ch, CURLOPT_SSL_VERIFYPEER,FALSE);
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curl_setopt($ch, CURLOPT_SSL_VERIFYHOST,FALSE);
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curl_setopt($ch, CURLOPT_USERAGENT, $ua);
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curl_setopt($ch, CURLOPT_HEADER, FALSE);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
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$proxyHost = "0.0.0.0";
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$proxyPort = 0;
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$config->GetProxy($proxyHost, $proxyPort);
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if($proxyHost != "0.0.0.0" && $proxyPort != 0){
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curl_setopt($ch,CURLOPT_PROXY, $proxyHost);
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curl_setopt($ch,CURLOPT_PROXYPORT, $proxyPort);
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}
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//运行curl，结果以jason形式返回
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$res = curl_exec($ch);
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curl_close($ch);
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//取出openid
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$data = json_decode($res,true);
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// dump($data);exit;
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$this->data = $data;
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$openid = $data['openid'];
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return $openid;
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}
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/**
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*
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* 拼接签名字符串
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* @param array $urlObj
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*
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* @return 返回已经拼接好的字符串
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*/
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private function ToUrlParams($urlObj)
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{
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$buff = "";
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foreach ($urlObj as $k => $v)
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{
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if($k != "sign"){
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$buff .= $k . "=" . $v . "&";
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}
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}
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$buff = trim($buff, "&");
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return $buff;
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}
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/**
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*
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* 获取地址js参数
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*
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* @return 获取共享收货地址js函数需要的参数，json格式可以直接做参数使用
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*/
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public function GetEditAddressParameters()
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{
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$config = new WxPayConfig();
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$getData = $this->data;
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$data = array();
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$data["appid"] = $config->GetAppId();
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$data["url"] = "http://".$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
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$time = time();
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$data["timestamp"] = "$time";
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$data["noncestr"] = WxPayApi::getNonceStr();
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$data["accesstoken"] = $getData["access_token"];
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ksort($data);
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$params = $this->ToUrlParams($data);
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$addrSign = sha1($params);
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$afterData = array(
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"addrSign" => $addrSign,
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"signType" => "sha1",
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"scope" => "jsapi_address",
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"appId" => $config->GetAppId(),
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"timeStamp" => $data["timestamp"],
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"nonceStr" => $data["noncestr"]
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);
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$parameters = json_encode($afterData);
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return $parameters;
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}
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/**
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*
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* 构造获取code的url连接
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* @param string $redirectUrl 微信服务器回跳的url，需要url编码
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*
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* @return 返回构造好的url
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*/
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private function _CreateOauthUrlForCode($redirectUrl)
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{
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$config = new WxPayConfig();
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$urlObj["appid"] = $config->GetAppId();
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$urlObj["redirect_uri"] = "$redirectUrl";
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$urlObj["response_type"] = "code";
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$urlObj["scope"] = "snsapi_base";
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$urlObj["state"] = "STATE"."#wechat_redirect";
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$bizString = $this->ToUrlParams($urlObj);
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return "https://open.weixin.qq.com/connect/oauth2/authorize?".$bizString;
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}
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/**
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*
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* 构造获取open和access_toke的url地址
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* @param string $code，微信跳转带回的code
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*
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* @return 请求的url
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*/
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private function __CreateOauthUrlForOpenid($code)
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{
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$config = new WxPayConfig();
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$urlObj["appid"] = $config->GetAppId();
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$urlObj["secret"] = $config->GetAppSecret();
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$urlObj["code"] = $code;
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$urlObj["grant_type"] = "authorization_code";
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$bizString = $this->ToUrlParams($urlObj);
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return "https://api.weixin.qq.com/sns/oauth2/access_token?".$bizString;
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}
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}
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