简单的几句PHP代码实现微信开放平台实现登录

刚刚实现的，好多粉丝要求搞个微信扫码登陆功能，由于以前怕麻烦（申请过程繁琐），前几天一个美女再三要求，于是就搞了下，注意是去微信开放平台申请。

演示参考下二当家的（直接登陆）：https://www.erdangjiade.com/php/1034.html

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

前台代码如下，简单一句话。

1. <!DOCTYPE html>
2. <html>
3. <head>
4. <meta http-equiv="content-type" content="text/html;charset=utf-8">
5. </head>
6. <body>
7. <span id="login_container"></span>
8. <script src="http://res.wx.qq.com/connect/zh_CN/htmledition/js/wxLogin.js"></script>
9. <script>
10. var obj = new WxLogin({
11. id: "login_container",
12. appid: "wxed782be999f82e0e",
13. scope: "snsapi_login",
14. redirect_uri: encodeURIComponent("http://" + window.location.host + "/login.php"),
15. state: Math.ceil(Math.random()*1000),
16. style: "black",
17. href: ""});
18. </script>
19. </body>
20. </html>
22. 服务器代码如下：
1. /*
2. require_once('weixin.class.php');
3. $weixin = new class_weixin();
4. */
6. define('APPID', "wx19ba7724e0383e08");
7. define('APPSECRET', "c1a56a5d4247dd44c320c9719c5ceb90");
9. class class_weixin
10. {
11. var $appid = APPID;
12. var $appsecret = APPSECRET;
14. //构造函数，获取Access Token
15. public function __construct($appid = NULL, $appsecret = NULL)
16. {
17. if($appid && $appsecret){
18. $this->appid = $appid;
19. $this->appsecret = $appsecret;
20. }
22. //扫码登录不需要该Access Token, 语义理解需要
23. //1. 本地写入
24. $res = file_get_contents('access_token.json');
25. $result = json_decode($res, true);
26. $this->expires_time = $result["expires_time"];
27. $this->access_token = $result["access_token"];
29. if (time() > ($this->expires_time + 3600)){
30. $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$this->appid."&secret=".$this->appsecret;
31. $res = $this->http_request($url);
32. $result = json_decode($res, true);
33. $this->access_token = $result["access_token"];
34. $this->expires_time = time();
35. file_put_contents('access_token.json', '{"access_token": "'.$this->access_token.'", "expires_time": '.$this->expires_time.'}');
36. }
37. }
39. /*
40. * PART1 网站应用
41. */
43. /*
44. header("Content-type: text/html; charset=utf-8");
45. require_once('wxopen.class.php');
46. $weixin = new class_weixin();
47. if (!isset($_GET["code"])){
48. $redirect_url = 'http://'.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
49. $jumpurl = $weixin->qrconnect($redirect_url, "snsapi_login", "123");
50. Header("Location: $jumpurl");
51. }else{
52. $oauth2_info = $weixin->oauth2_access_token($_GET["code"]);
53. $userinfo = $weixin->oauth2_get_user_info($oauth2_info['access_token'], $oauth2_info['openid']);
54. var_dump($userinfo);
55. }
56. */
57. //生成扫码登录的URL
58. public function qrconnect($redirect_url, $scope, $state = NULL)
59. {
60. $url = "https://open.weixin.qq.com/connect/qrconnect?appid=".$this->appid."&redirect_uri=".urlencode($redirect_url)."&response_type=code&scope=".$scope."&state=".$state."#wechat_redirect";
61. return $url;
62. }
64. //生成OAuth2的Access Token
65. public function oauth2_access_token($code)
66. {
67. $url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=".$this->appid."&secret=".$this->appsecret."&code=".$code."&grant_type=authorization_code";
68. $res = $this->http_request($url);
69. return json_decode($res, true);
70. }
72. //获取用户基本信息（OAuth2 授权的 Access Token 获取未关注用户，Access Token为临时获取）
73. public function oauth2_get_user_info($access_token, $openid)
74. {
75. $url = "https://api.weixin.qq.com/sns/userinfo?access_token=".$access_token."&openid=".$openid."&lang=zh_CN";
76. $res = $this->http_request($url);
77. return json_decode($res, true);

简单的几句PHP代码实现微信开放平台实现登录

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

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