微信授权

微信授权代码如下：

<?php

namespace wechat;

/**
 * @package 微信授权控制器
 */

class WechatOauth{
    //微信授权配置信息
    private $wechat_config = [
        'appid'     => '',
        'appsecret'     => '',
    ];
 

    public function __construct() {
        $this->wechat_config = $this->wechatConfig();
    }

    /**
     * 获取秘钥配置
     * @return [type] 数组
     */
    public function wechatConfig() {
        $wechat_config = array_merge($this->wechat_config,config('wechat.oauth'));
        return $wechat_config;
    }

     /**
     * 获取openid
     * @return string|mixed
     */
    public function getUserAccessUserInfo($code = ""){
        if(empty($code)){
            $baseUrl = request()->url(true);
            $url = $this->getSingleAuthorizeUrl($baseUrl, "123");                
            Header("Location: $url");
            exit();
        }else{
            $access_token = $this->getSingleAccessToken($code);
            return $this->getUserInfo($access_token);
        }

    }

    /**
     * 微信授权链接
     * @param  string $redirect_uri 要跳转的地址
     * @return [type]               授权链接
     */
    public function getSingleAuthorizeUrl($redirect_url = "",$state = '1') {
        $redirect_url = urlencode($redirect_url);
        return "https://open.weixin.qq.com/connect/oauth2/authorize?appid=" . $this->wechat_config['appid'] . "&redirect_uri=".$redirect_url."&response_type=code&scope=snsapi_userinfo&state={$state}#wechat_redirect"; 
    }

    /**
     * 获取token
     * @return [type] 返回token 
     */
    public function getSingleAccessToken($code) {
        $url = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid='.$this->wechat_config['appid'].'&secret='.$this->wechat_config['appsecret'].'&code='.$code.'&grant_type=authorization_code';
        $access_token = $this->https_request($url);
        return $access_token;
    }

    /**
     * 发送curl请求
     * @param $url string
     * @param return array|mixed
     */
    public function https_request($url){
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        $AjaxReturn = curl_exec($curl);
        //获取access_token和openid,转换为数组
        $data = json_decode($AjaxReturn,true);
        curl_close($curl);
        return $data;
    }

     /**
     * @explain
     * 通过code获取用户openid以及用户的微信号信息
     * @return array|mixed
     * @remark
     * 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
     * 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
     **/
    public function getUserInfo($access_token = []){
        if(!$access_token){
            return [
                'code' => 0,
                'msg' => '微信授权失败', 
            ];
        }
        $userinfo_url = 'https://api.weixin.qq.com/sns/userinfo?access_token='.$access_token['access_token'].'&openid='.$access_token['openid'].'&lang=zh_CN';
        $userinfo_json = $this->https_request($userinfo_url);
     
        //获取用户的基本信息，并将用户的唯一标识保存在session中
        if(!$userinfo_json){
            return [
                'code' => 0,
                'msg' => '获取用户信息失败！', 
            ];
        }
        return $userinfo_json;
    }
}