公众号获取用户信息

一、设置APPID等参数

<?php
//scope=snsapi_base 实例
$appid='*****APPID****';
$redirect_uri = urlencode ( 'http://***域名**/getUserInfo.php' ); 5 $url ="https://open.weixin.qq.com/connect/oauth2/authorize?appid=$appid&redirect_uri=$redirect_uri&response_type=code&scope=snsapi_base&state=1#wechat_redirect"; 6 header("Location:".$url);

二、获取用户信息

<?php
include("DBDA.class.php");
$appid = "******APPID*****";
$secret = "*****secret****";
$code = $_GET["code"];

//第一步:取全局access_token
$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$appid&secret=$secret";
$token = getJson($url);

//第二步:取得openid
$oauth2Url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=$appid&secret=$secret&code=$code&grant_type=authorization_code";
$oauth2 = getJson($oauth2Url);

//第三步:根据全局access_token和openid查询用户信息
$access_token = $token["access_token"];
$openid = $oauth2['openid'];
$get_user_info_url = "https://api.weixin.qq.com/cgi-bin/user/info?access_token=$access_token&openid=$openid&lang=zh_CN";
$userinfo = getJson($get_user_info_url);

//打印用户信息
$openid = $userinfo['openid'];
session_start();
$SESSION['openid']=$openid;
$db = new DBDA();


if($openid!=""){
    header("Location:http://***域名**/mparents/login1/index");
}

function getJson($url){
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$output = curl_exec($ch);
curl_close($ch);
return json_decode($output, true);
}