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117 lines
4.4 KiB
117 lines
4.4 KiB
<?php
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namespace App\Http\Controllers\Api;
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use App\Http\Controllers\Api\CommonController;
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//微信auth2.0授权
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class WechatAuthController extends CommonController
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{
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public $appid = 'wxba09d9f0fed4b84b'; //微信APPID，公众平台获取
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public $appsecret = '332c2b1fc1eb282c0136b73723db4237'; //微信APPSECREC，公众平台获取
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public $redirect_uri = "http://www.你的域名.cn/项目目录/index.php?m=分组&c=控制器&a=方法"; //微信回调地址，要跟公众平台的配置域名相同
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public $code;
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public $openid;
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public $state = 123; //重定向后会带上state参数，开发者可以填写a-zA-Z0-9的参数值，最多128字节
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public function auth(Request $request)
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{
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//如果$_SESSION中没有openid，说明用户刚刚登陆，就执行getCode、getOpenId、getUserInfo获取他的信息
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if (!isset($_SESSION['openid']))
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{
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$this->code = $this->getCode();
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$this->access_token = $this->getOpenId();
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$userInfo = $this->getUserInfo();
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//把用户的微信信息存到数据库中
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/* if ($userInfo)
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{
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$ins = M('Wechat_user_info');
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$map['openid'] = $userInfo['openid'];
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$result = $ins->where($map)->find(); //根据OPENID查找数据库中是否有这个用户，如果没有就写数据库。继承该类的其他类，用户都写入了数据库中。
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if (!$result)
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{
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$ins->add($userInfo);
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}
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$_SESSION['openid'] = $userInfo['openid']; //写到$_SESSION中。微信缓存很坑爹，调试时请及时清除缓存再试。
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} */
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}
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}
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/**
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* @explain
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* 获取code,用于获取openid和access_token
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* @remark
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* code只能使用一次，当获取到之后code失效,再次获取需要重新进入
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* 不会弹出授权页面，适用于关注公众号后自定义菜单跳转等，如果不关注，那么只能获取openid
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**/
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public function getCode()
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{
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if (isset($_REQUEST["code"]))
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{
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return $_REQUEST["code"];
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}
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else
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{
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$str = "location: https://open.weixin.qq.com/connect/oauth2/authorize?appid=" . $this->appid . "&redirect_uri=" . $this->redirect_uri . "&response_type=code&scope=snsapi_userinfo&state=". $this->state ."#wechat_redirect";
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header($str);
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exit;
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}
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}
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/**
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* @explain
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* 用于获取用户openid
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**/
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public function getOpenId()
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{
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$access_token_url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=" . $this->appid . "&secret=" . $this->appsecret . "&code=" . $this->code . "&grant_type=authorization_code";
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$access_token_json = $this->https_request($access_token_url);
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$access_token_array = json_decode($access_token_json, TRUE);
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return $access_token_array;
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}
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/**
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* @explain
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* 通过code获取用户openid以及用户的微信号信息
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* @return
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* @remark
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* 获取到用户的openid之后可以判断用户是否有数据，可以直接跳过获取access_token,也可以继续获取access_token
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* access_token每日获取次数是有限制的，access_token有时间限制，可以存储到数据库7200s. 7200s后access_token失效
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**/
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public function getUserInfo()
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{
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$userinfo_url = "https://api.weixin.qq.com/sns/userinfo?access_token=".$this->access_token['access_token'] ."&openid=" . $this->access_token['openid']."&lang=zh_CN";
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$userinfo_json = $this->https_request($userinfo_url);
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$userinfo_array = json_decode($userinfo_json, TRUE);
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return $userinfo_array;
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}
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/**
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* @explain
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* 发送http请求，并返回数据
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**/
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public function https_request($url, $data = null)
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{
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$curl = curl_init();
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curl_setopt($curl, CURLOPT_URL, $url);
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curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
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curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
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if (!empty($data))
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{
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curl_setopt($curl, CURLOPT_POST, 1);
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curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
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}
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curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
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$output = curl_exec($curl);
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curl_close($curl);
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return $output;
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}
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}
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