Use PHP WeChat development to obtain user information and implement the code in detail

This article mainly introduces relevant information on how to obtain user information through php WeChat development. Friends in need can refer to

php WeChat development to obtain user information

The rough algorithm for obtaining user information is

User authorization to log in to a third-party website,

Key point: scope parameter:
snsapi_basic Silent login, no user authorization is required, Only openid can be obtained;
snsapi_userinfo, the user needs to click authorization to obtain openid and all user information;

The first step: get the user's code value first;
The second step: According to Code value is used to obtain access_token. The value of each request is different. If not used, it is updated every five minutes;
Step 3: Obtain user information based on access_token;

1. Obtain code code implementation ：

##getcode.php

if(isset($_SESSION['user'])){
              print_r($_SESSION['user']);
              exit;
            }

$appid='wx1d7c6fcd6131143b3';

            $redirect_url="http://www.antfortune.vip/callback.php";
            $scope='snsapi_userinfo';//获取的方式;


            $url='https://open.weixin.qq.com/connect/oauth2/authorize?appid='.$appid.'&redirect_uri='.urlencode($redirect_url).'&response_type=code&scope='.$scope.'&state=123#wechat_redirect';


header("Location：".$url);

2. Get access_token and openid based on code

getOpenid.php



<?php
//获取用户openid
$appid="your appid";
$appsecret="your appsecret";
$code=$_GET[&#39;code&#39;];



function getOpenID($appid,$appsecret,$code){
$url="https://api.weixin.qq.com/sns/oauth2/access_token?appid=".$appid."&secret=". 
$appsecret."&code=".$code."&grant_type=authorization_code";

$weixin=file_get_contents($url);//通过code换取网页授权access_token
$jsondecode=json_decode($weixin); //对JSON格式的字符串进行编码
$array = get_object_vars($jsondecode);//转换成数组
$openid = $array[&#39;openid&#39;];//输出openid
return $openid;
}

echo getOpenID($appid,$appsecret,$code);

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