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HomeBackend DevelopmentPHP Tutorial微信公众平台实现获取用户OpenID的方法_PHP

本文实例讲述了微信公众平台实现获取用户OpenID的方法。分享给大家供大家参考。具体分析如下:

用户点击微信自定义菜单view类型按钮后,微信客户端将会打开开发者在按钮中填写的url值 (即网页链接),达到打开网页的目的,但是view不能获取用户的openid,需要使用微信“网页授权获取用户基本信息”高级接口结合使用,获得用户的登入个人信息。

具体方法:

1、配置网页授权回调域名,如 www.bitsCN.com

2、模拟公众号的第三方网页,http://www.bitsCN.com/getcodeurl.php

<&#63;php 
if(isset($_SESSION['user'])){ 
 print_r($_SESSION['user']);
exit;
}
$APPID='公众号在微信的appid';
$REDIRECT_URI='http://www.bitsCN.com/callback.php';
$scope='snsapi_base';
//$scope='snsapi_userinfo';//需要授权
$url='https://open.weixin.qq.com/connect/oauth2/authorize&#63;appid='.$APPID.'&redirect_uri='.urlencode($REDIRECT_URI).'&response_type=code&scope='.$scope.'&state='.$state.'#wechat_redirect';
header("Location:".$url);
&#63;>

3、第三方网页的回跳url中,首先从请求中取得code,然后根据code进一步换取openid和access_token,然后就可以根据openid和access_token调用微信的相关接口查询用户信息了。

<&#63;php
//http://www.bitsCN.com/callback.php
$appid = "公众号在微信的appid"; 
$secret = "公众号在微信的app secret"; 
$code = $_GET["code"]; 
$get_token_url = 'https://api.weixin.qq.com/sns/oauth2/access_token&#63;appid='.$appid.'&secret='.$secret.'&code='.$code.'&grant_type=authorization_code';
$ch = curl_init();
curl_setopt($ch,CURLOPT_URL,$get_token_url); 
curl_setopt($ch,CURLOPT_HEADER,0); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1 ); 
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10); 
$res = curl_exec($ch); 
curl_close($ch); 
$json_obj = json_decode($res,true); 
//根据openid和access_token查询用户信息 
$access_token = $json_obj['access_token']; 
$openid = $json_obj['openid']; 
$get_user_info_url = 'https://api.weixin.qq.com/sns/userinfo&#63;access_token='.$access_token.'&openid='.$openid.'&lang=zh_CN'; 

$ch = curl_init(); 
curl_setopt($ch,CURLOPT_URL,$get_user_info_url); 
curl_setopt($ch,CURLOPT_HEADER,0); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1 ); 
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10); 
$res = curl_exec($ch); 
curl_close($ch); 

//解析json 
$user_obj = json_decode($res,true); 
$_SESSION['user'] = $user_obj; 
print_r($user_obj); 
&#63;>

希望本文所述对大家基于php的微信公众平台开发有所帮助。

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