php 微信公众平台OAuth2.0网页授权,获取用户信息代码类封装demo

时间:2022-04-24 12:05:50

get_wx_data.php

<?php
/**
* 获取微信用户信息
* @author: Lucky hypo
*/
class GetWxData{
private $appid = 'xxx';
private $appsecret = 'xxxxxx';
/**
* 1、获取微信用户信息,判断有没有code,有使用code换取access_token,没有去获取code。
* @return array 微信用户信息数组
*/
public function get_user_all(){
if (!isset($_GET['code'])){//没有code,去微信接口获取code码
$callback = 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'];//微信服务器回调url,这里是本页url
$this->get_code($callback);
} else {//获取code后跳转回来到这里了
$code = $_GET['code'];
$data = $this->get_access_token($code);//获取网页授权access_token和用户openid
$data_all = $this->get_user_info($data['access_token'],$data['openid']);//获取微信用户信息
return $data_all;
}
}
/**
* 2、用户授权并获取code
* @param string $callback 微信服务器回调链接url
*/
private function get_code($callback){
$appid = $this->appid;
$scope = 'snsapi_userinfo';
$state = md5(uniqid(rand(), TRUE));//唯一ID标识符绝对不会重复
$url = 'https://open.weixin.qq.com/connect/oauth2/authorize?appid=' . $appid . '&redirect_uri=' . urlencode($callback) . '&response_type=code&scope=' . $scope . '&state=' . $state . '#wechat_redirect';
header("Location:$url");
}
/**
* 3、使用code换取access_token
* @param string 用于换取access_token的code,微信提供
* @return array access_token和用户openid数组
*/
private function get_access_token($code){
$access_token_file = './access_token.txt';
$get_data_status = false;
$data = file_get_contents($access_token_file);
if($data){
$data = json_decode($data,true);
$expire_time = isset($data['expire_time'])?$data['expire_time']:'0';
if(time() > ($expire_time - 600)){
$get_data_status = true;
}
}else{
$get_data_status = true;
}
if($get_data_status == true){
$appid = $this->appid;
$appsecret = $this->appsecret;
$url = 'https://api.weixin.qq.com/sns/oauth2/access_token?appid=' . $appid . '&secret=' . $appsecret . '&code=' . $code . '&grant_type=authorization_code';
$user = json_decode(file_get_contents($url));
if (isset($user->errcode)) {
echo 'error:' . $user->errcode.'<hr>msg :' . $user->errmsg;exit;
}
$data = json_decode(json_encode($user),true);//返回的json数组转换成array数组
$data['expire_time'] = time()+$data['expires_in'];
file_put_contents($access_token_file,json_encode($data));
} return $data;
}
/**
* 4、使用access_token获取用户信息
* @param string access_token
* @param string 用户的openid
* @return array 用户信息数组
*/
private function get_user_info($access_token,$openid){
$url = 'https://api.weixin.qq.com/sns/userinfo?access_token=' . $access_token . '&openid=' . $openid . '&lang=zh_CN';
$user = json_decode(file_get_contents($url));
if (isset($user->errcode)) {
echo 'error:' . $user->errcode.'<hr>msg :' . $user->errmsg;exit;
}
$data = json_decode(json_encode($user),true);//返回的json数组转换成array数组
return $data;
} //对外开放,获取access_token
public function get_access_token_open(){
if (!isset($_GET['code'])){//没有code,去微信接口获取code码
$protocol = ((!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off') || $_SERVER['SERVER_PORT'] == 443) ? "https://": "http://";
//$callback = $protocol.$_SERVER['HTTP_HOST'].$_SERVER['PHP_SELF'];//微信服务器回调url,这里是本页url
$callback = $protocol.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];//微信服务器回调url,这里是本页url
$this->get_code($callback);
} else {//获取code后跳转回来到这里了
$code = $_GET['code'];
$data = $this->get_access_token($code);//获取网页授权access_token和用户openid
return $data;
}
}
} //使用方法:
$getWxData = new GetWxData();
if(isset($_GET['model']) && $_GET['model'] == 'get_access_token'){
$data = $getWxData->get_access_token_open();
echo(json_encode($data));exit();
}else{
$data = $getWxData->get_user_all();
echo '<pre>';
print_r($data);
exit();
} //访问链接:
//http://127.0.0.1/get_wx_data.php
//http://127.0.0.1/get_wx_data.php?model=get_access_token
?>