PHP--通过公众号获取用户微信信息

namespace My\Controller;

//use Common\Controller\HomeCommonController;
use Think\Controller;

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 * Description of WxController
 *                2018-07-12
 * @author lianyu001
 */
class WxController extends Controller {

    //put your code here
    /**
     * 微信授权相关接口
     */
    //高级功能-》开发者模式-》获取
    private $app_id = "";//AppID
    private $app_secret = "";//AppSecret

    function index() {
        $url = "http://".$_SERVER['HTTP_HOST']."/My/Wx/index_1"; // 回调地址--授权后跳转页面，附带code
        redirect($this->get_authorize_url($url, "STATE"));
    }

   

/**

*This is test. 这是一个测试

*/

    function bbc(){
        session("name","你打野");
        redirect(U("Home/Index/index_1"));
    }

    function index_1() {
        $code = I("code");
        $userinfo = $this->get_access_token($code);
        //用户授权
        if ($userinfo) {
            $openid = $userinfo['openid'];
            $access_token = $userinfo['access_token'];
            $user = $this->get_user_info($access_token, $openid);
            $mod = M("member");
            $where['open_id'] = $openid;
            //判断用户已注册
            
            $res = $mod->where($where)->find();
            //数据库无匹配
            if (!$res) {
                //注册新用户
                $add = array(
                    "open_id" => $openid,
                    "nickname" => $user['nickname'],
                    "username" => $user['nickname'],
                    "city" => $user['city'],
                    "province" => $user['province'],
                    "country" => $user['country'],
                    "pic" => $user['headimgurl'],
                    "sex" => $user['sex'],
                    "reg_time" => time(),
                    "open_type"=>1,
                );
                $mod->add($add);
                $res = $mod->where($where)->find();
            }
//            exit("test");
//            $_COOKIE['user'] = $res; //保存用户信息到会话中
//            $_SESSION['user'] = $res; //保存用户信息到会话中
            $_SESSION['user']=$res;
            //修改最后登录时间
//            $mod->where($where)->setField("end_time",time());
            //跳转网页
            $url="http://".$_SERVER['HTTP_HOST']."";
            redirect($url);
        } else {
            echo '';
            echo "未授权无法访问---(You are not eligible to visit)";
        }
    }

    /**
     * 获取微信授权链接
     *
     * @param string $redirect_uri 跳转地址
     * @param mixed $state 参数
     */
    public function get_authorize_url($redirect_uri = '', $state = '') {
        $redirect_uri = urlencode($redirect_uri);
        return "https://open.weixin.qq.com/connect/oauth2/authorize?appid={$this->app_id}&redirect_uri={$redirect_uri}&response_type=code&scope=snsapi_userinfo&state={$state}#wechat_redirect";
    }

    /**
     * 获取授权token
     *
     * @param string $code 通过get_authorize_url获取到的code
     */
    public function get_access_token($code = '', $app_id = '', $app_secret = '') {
        $app_id = empty($app_id) ? $this->app_id : $app_id;
        $app_secret = empty($app_secret) ? $this->app_secret : $app_secret;
        $token_url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid={$this->app_id}&secret={$this->app_secret}&code={$code}&grant_type=authorization_code";
        $token_data = $this->http($token_url);

        if ($token_data[0] == 200) {
            return json_decode($token_data[1], TRUE);
        }

        return FALSE;
    }

    /**
     * 获取授权后的微信用户信息
     *
     * @param string $access_token
     * @param string $open_id
     */
    public function get_user_info($access_token = '', $open_id = '') {
        if ($access_token && $open_id) {
            $info_url = "https://api.weixin.qq.com/sns/userinfo?access_token={$access_token}&openid={$open_id}&lang=zh_CN";
            $info_data = $this->http($info_url);

            if ($info_data[0] == 200) {
                return json_decode($info_data[1], TRUE);
            }
        }

        return FALSE;
    }

    public function http($url, $method, $postfields = null, $headers = array(), $debug = false) {
        $ci = curl_init();
        /* Curl settings */
        curl_setopt($ci, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
        curl_setopt($ci, CURLOPT_CONNECTTIMEOUT, 30);
        curl_setopt($ci, CURLOPT_TIMEOUT, 30);
        curl_setopt($ci, CURLOPT_RETURNTRANSFER, true);

        switch ($method) {
            case 'POST':
                curl_setopt($ci, CURLOPT_POST, true);
                if (!empty($postfields)) {
                    curl_setopt($ci, CURLOPT_POSTFIELDS, $postfields);
                    $this->postdata = $postfields;
                }
                break;
        }
        curl_setopt($ci, CURLOPT_URL, $url);
        curl_setopt($ci, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($ci, CURLINFO_HEADER_OUT, true);

        $response = curl_exec($ci);
        $http_code = curl_getinfo($ci, CURLINFO_HTTP_CODE);

        if ($debug) {
            echo "=====post data======\r\n";
            var_dump($postfields);

            echo '=====info=====' . "\r\n";
            print_r(curl_getinfo($ci));

            echo '=====$response=====' . "\r\n";
            print_r($response);
        }
        curl_close($ci);
        return array($http_code, $response);
    }

}

ps:封装成了一个类，不记得是转自哪里了。不明白的地方可以让我和你一起探讨，Q：1411479499