<?php class wxApi{ const APPID = ''; const APPSECRET = ''; const CURL_PROXY_HOST = "0.0.0.0";//"10.152.18.220"; const CURL_PROXY_PORT = 0;//8080; /** * * 网页授权接口微信服务器返回的数据,返回样例如下 * { * "access_token":"ACCESS_TOKEN", * "expires_in":7200, * "refresh_token":"REFRESH_TOKEN", * "openid":"OPENID", * "scope":"SCOPE", * "unionid": "o6_bmasdasdsad6_2sgVt7hMZOPfL" * } * 其中access_token可用于获取共享收货地址 * openid是微信支付jsapi支付接口必须的参数 * @var array */ public $data = null; /** * * 通过跳转获取用户的openid,跳转流程如下: * 1、设置自己需要调回的url及其其他参数,跳转到微信服务器https://open.weixin.qq.com/connect/oauth2/authorize * 2、微信服务处理完成之后会跳转回用户redirect_uri地址,此时会带上一些参数,如:code * * @return 用户的openid */ public function GetOpenid(){ //通过code获得openid if (!isset($_GET['code'])){ //触发微信返回code码 $baseUrl = urlencode('http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'].$_SERVER['QUERY_STRING']); $url = $this->__CreateOauthUrlForCode($baseUrl); Header("Location: $url"); exit(); } else { //获取code码,以获取openid $code = $_GET['code']; $openid = $this->getOpenidFromMp($code); return $openid; } } /** * * 通过code从工作平台获取openid机器access_token * @param string $code 微信跳转回来带上的code * * @return openid */ public function GetOpenidFromMp($code){ $url = $this->__CreateOauthUrlForOpenid($code); //初始化curl $ch = curl_init(); //设置超时 curl_setopt($ch, CURLOPT_TIMEOUT, 30); 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($ch, CURLOPT_RETURNTRANSFER, TRUE); if(self::CURL_PROXY_HOST != "0.0.0.0" && self::CURL_PROXY_PORT != 0){ curl_setopt($ch,CURLOPT_PROXY, self::CURL_PROXY_HOST); curl_setopt($ch,CURLOPT_PROXYPORT, self::CURL_PROXY_PORT); } //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->data = $data; $openid = $data['openid']; return $openid; } /** * * 拼接签名字符串 * @param array $urlObj * * @return 返回已经拼接好的字符串 */ private function ToUrlParams($urlObj){ $buff = ""; foreach ($urlObj as $k => $v){ if($k != "sign"){ $buff .= $k . "=" . $v . "&"; } } $buff = trim($buff, "&"); return $buff; } /** * * 构造获取code的url连接 * @param string $redirectUrl 微信服务器回跳的url,需要url编码 * * @return 返回构造好的url */ private function __CreateOauthUrlForCode($redirectUrl){ $urlObj["appid"] = self::APPID; $urlObj["redirect_uri"] = "$redirectUrl"; $urlObj["response_type"] = "code"; $urlObj["scope"] = "snsapi_base"; $urlObj["state"] = "STATE"."#wechat_redirect"; $bizString = $this->ToUrlParams($urlObj); return "https://open.weixin.qq.com/connect/oauth2/authorize?".$bizString; } /** * * 构造获取open和access_toke的url地址 * @param string $code,微信跳转带回的code * * @return 请求的url */ private function __CreateOauthUrlForOpenid($code){ $urlObj["appid"] = self::APPID; $urlObj["secret"] = self::APPSECRET; $urlObj["code"] = $code; $urlObj["grant_type"] = "authorization_code"; $bizString = $this->ToUrlParams($urlObj); return "https://api.weixin.qq.com/sns/oauth2/access_token?".$bizString; } }//wxApi /* $tools = new wxApi(); $openId = $tools->GetOpenid(); echo $openId; */
微信获取用户openId的类
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