最新微信扫码登陆源码演示下载这个是目前最常见的一个功能了，微信那么火爆，只有把它与自己的网站相结合，才能会有更多的用户注册，今天就来研究下微信扫码的功能，1、首先到微信开放平台申请https://open.weixin.qq.com/ 获取到appid和appsecret，前台显示页面如下
完整代码如下：
<!doctype html>
<html>
<head>
<meta http-equiv="content-type" content="text/html;charset=utf-8">
</head>
<body>
<span id="login_container"></span>
<script src="http://res.wx.qq.com/connect/zh_cn/htmledition/js/wxlogin.js"></script>
<script>
var obj = new wxlogin({
id: "login_container",
appid: "wxed782be999f86e0e",
scope: "snsapi_login",
redirect_uri: encodeuricomponent("http://" + window.location.host + "/login.php"),
state: math.ceil(math.random()*1000),
style: "black",
href: ""});
</script>
</body>
</html>
2、php处理代码页面
/*
require_once('weixin.class.php');
$weixin = new class_weixin();
*/
define('appid', "wx19ba77624e083e08");
define('appsecret', "c1a56a5c4247dd44c320c9719c5ceb90");
class class_weixin
{
var $appid = appid;
var $appsecret = appsecret;
//构造函数，获取access token
public function __construct($appid = null, $appsecret = null)
{
if($appid && $appsecret){
$this->appid = $appid;
$this->appsecret = $appsecret;
}
//扫码登录不需要该access token, 语义理解需要
//1. 本地写入
$res = file_get_contents('access_token.json');
$result = json_decode($res, true);
$this->expires_time = $result["expires_time"];
$this->access_token = $result["access_token"];
if (time() > ($this->expires_time + 3600)){
$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$this->appid."&secret=".$this->appsecret;
$res = $this->http_request($url);
$result = json_decode($res, true);
$this->access_token = $result["access_token"];
$this->expires_time = time();
file_put_contents('access_token.json', '{"access_token": "'.$this->access_token.'", "expires_time": '.$this->expires_time.'}');
}
}
/*
* part1 网站应用
*/
/*
header("content-type: text/html; charset=utf-8");
require_once('wxopen.class.php');
$weixin = new class_weixin();
if (!isset($_get["code"])){
$redirect_url = 'http://'.$_server['http_host'].$_server['request_uri'];
$jumpurl = $weixin->qrconnect($redirect_url, "snsapi_login", "123");
header("location: $jumpurl");
}else{
$oauth2_info = $weixin->oauth2_access_token($_get["code"]);
$userinfo = $weixin->oauth2_get_user_info($oauth2_info['access_token'], $oauth2_info['openid']);
var_dump($userinfo);
}
*/
//生成扫码登录的url
public function qrconnect($redirect_url, $scope, $state = null)
{
$url = "https://open.weixin.qq.com/connect/qrconnect?appid=".$this->appid."&redirect_uri=".urlencode($redirect_url)."&response_type=code&scope=".$scope."&state=".$state."#wechat_redirect";
return $url;
}
//生成oauth2的access token
public function oauth2_access_token($code)
{
$url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=".$this->appid."&secret=".$this->appsecret."&code=".$code."&grant_type=authorization_code";
$res = $this->http_request($url);
return json_decode($res, true);
}
//获取用户基本信息（oauth2 授权的 access token 获取 未关注用户，access token为临时获取）
public function oauth2_get_user_info($access_token, $openid)
{
$url = "https://api.weixin.qq.com/sns/userinfo?access_token=".$access_token."&openid=".$openid."&lang=zh_cn";
$res = $this->http_request($url);
return json_decode($res, true);
}
以上就是php实现微信扫码登陆的思路与代码的详细内容。