How to achieve _php skills in PHP micro-credit development acquiring user information

PHP micro-Credit development Get user information

The approximate algorithm for obtaining user information is

Users are authorized to log on to third party websites,

Emphasis: Scope Parameters:
Snsapi_basic Silent Login, do not require user authorization, can only obtain OpenID;
Snsapi_userinfo, require user to click Authorization, can obtain OpenID and all user information;

The first step: Get the user's code value first;
The second step: according to the code value to get Access_token, each request value is different, if not used, every five minutes update;
The third step: according to Access_token to obtain user information;

1. Get 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 '; the way of acquiring;


            $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, according to the code to obtain Access_token and OpenID

getopenid.php



<?php
//Get user OpenID
$appid = "Your AppID";
$appsecret = "Your Appsecret";
$code =$_get[' Code '];



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);//through code in exchange for Web page authorization Access_token
$jsondecode =json_decode ($weixin); Encode JSON-formatted strings
$array = Get_object_vars ($jsondecode);//convert array
$openid = $array [' OpenID '];//output OpenID return
$openid;
}

Echo Getopenid ($appid, $appsecret, $code);

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