PHP微信扫码登录

本文使用php 进行微信pc 扫码登录，扫码获取用户信息

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话不多说直接上代码吧！

怎么使用在代码最下面

php

class WeChatRcLogin
{
public $state = '';
public $appid = ''; 
public $secret = '';
public $redirect_uri = '';
public $error = '';
public $data = [];

public function __construct($config)
    {
        
$this->state = $config['state'];
$this->appid = $config['appid'];
$this->secret = $config['secret'];
$this->redirect_uri = $config['redirect_uri'];
    }



/**
     * 获取登录的url
     * @return string
     * @author: wmq
     * @Time: 2022/10/13 14:40
*/
    public function  getLoginUrl(){
$arr = [
'appid' => $this->appid, // appid
            'redirect_uri' => $this->redirect_uri, //回调url
            'response_type' => 'code',
            'scope' => 'snsapi_login',
            'state' => $this->state, //回调验签数据
        ];
return 'https://open.weixin.qq.com/connect/qrconnect?'.http_build_query($arr).'#wechat_redirect';
    }

/**
     * 获取access_token
     * @param $param
     * @return bool
     * @author: wmq
     * @Time: 2022/10/13 14:40
*/
    public function getAccessToken($param){
if(!isset($param['code'],$param['state'])){
$this->error = '缺少参数';
return false;
        }
$arr = [
'appid' => $this->appid,
            'secret' => $this->secret,
            'code' => $param['code'],
            'grant_type' => 'authorization_code'
        ];
$url = 'https://api.weixin.qq.com/sns/oauth2/access_token?'.http_build_query($arr);
$result = Curl::get($url);
if(isset($result['errcode'])){
$this->error = $result['errmsg'];
return false;
        }else{
if($this->state && $param['state'] != $this->state){
$this->error = '验签失败';
return false;
            }
$this->data = $result;
return true;
        }
    }

/**
     * 获取用户信息
     * @param $param
     * @return bool
     * @author: wmq
     * @Time: 2022/10/13 14:40
*/
    public function getUserInfo($param){
        
if(!isset($param['access_token'],$param['openid'])){
$this->error = '缺少参数';
return false;
        }
$arr = [
'access_token' => $param['access_token'],
            'openid' => $param['openid'],
        ];
$url = 'https://api.weixin.qq.com/sns/userinfo?'.http_build_query($arr);
$result = Curl::get($url);
if(isset($result['errcode'])){
$this->error = $result['errmsg'];
return false;
        }else{
$this->data = $result;
return true;
        }
    }
}

class Curl
{
/**
     * curl post 请求
     * @param string $url 地址
     * @param array $data 数据
     * @return bool|string
     * @author: wmq
     * @Time: 2022/4/25 9:18
*/
    public static function post($url, $data = [],$header = []){
return self::curl_request($url,$data,$header);

    }

/**
     * get请求
     * @param string $url 地址
     * @param int $timeout 时间
     * @return bool|string
     * @author: wmq
     * @Time: 2022/4/25 9:21\
*/
    public static function get($url,$header = []){
return self::curl_request($url,[],$header);
    }

public static function curl_request($url,$data = [],$header)
    {
!$header && $headerArray = ["Content-type:application/json;charset='utf-8'","Accept:application/json"];
$header && $headerArray = $header;

$curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($curl, CURLOPT_TIMEOUT, 30);
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($curl,CURLOPT_HTTPHEADER,$headerArray);
if (!empty($data)) {
            curl_setopt($curl, CURLOPT_POST, true);
            curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
        }
$output = curl_exec($curl);
        curl_close($curl);

$res = json_decode($output,true);

return $res;
    }
}












//使用方法
$config = [
'appid' => '',  //appid 微信开放平台获取
    'secret' => '', // secret 微信开放平台获取
    'redirect_uri' => '', // 回调地址，微信开放平台设置，扫码成功后微信调到并携带code，state的地址
    'state' => '' // 回调签名验签 可以为空，可以存到缓存中验证
];

$arr = [];
$l = new WeChatRcLogin($config);

//获取跳转地址
// $l->getLoginUrl();


//https://developers.weixin.qq.com/doc/oplatform/Website_App/WeChat_Login/Authorized_Interface_Calling_UnionID.html

//access_token 建议根据expires_in 进行缓存 获取access_token 是有次数限制的，明细请看官网文档

//获取用户信息
if($l->getAccessToken($_GET)){  //获取access_token 根据state, code 微信回调会传过来，
    $data = $l->data; //access_token 信息
    if($l->getUserInfo($l->data)){ // 获取用户信息
        echo '获取成功
';
$arr = array_merge($arr,$l->data);  //合并access_token 返回的东西 + 用户信息返回的东西
        var_dump($arr);
    }else{  //获取用户信息失败
        echo '获取用户信息失败
';
var_dump($l->error);
    }
}else{
echo '获取access_token失败
';
var_dump($l->error);
echo '
';
}