微信view类型的菜单获取openid范例

 1 <?php

 2 //启用session

 3 session_start();

 4 //编码

 5 header("Content-type: text/html; charset=utf-8");

 6 //保存微信openid

 7 $weixin_openid = "";

 8 //保存从微信得到的code

 9 $code = "";

10 //获得菜单中设置的state值

11 $state = "";

12 

13 //修改为注册的测试号信息

14 $appid = "wx834404c1d1dbb5ec";

15 $secret = "bf03cfa823d80dd537bd18e83ce9a4e4";

16 

17 if (isset($_GET['code']) && isset($_GET['state']) ){

18     $weixin_openid = GetOpenid($_GET['code']);

19     $code = $_GET['code'];

20     $state = $_GET['state'];

21     //echo $resultStr;

22 }else{

23     echo "NO CODE";

24     return ;

25 }

26 

27 // store session data

28 $_SESSION['weixin_openid']=$weixin_openid;

29 

30 if($state == "s1"){

31     //我的课堂

32     header('Location: courseCenter.php');

33 }else if($state == "s2"){

34     //订单记录

35     header('Location: orderList.php');

36 }else{

37     $textTpl="由认证接口进入我的课堂,<br/>您的 wx_openid: %s <br/> code: %s <br/> state: %s <br/>

38     <a href='orderList.php'>订单记录</a>";

39     $resultStr = sprintf($textTpl, $weixin_openid, $code, $state);

40 

41     echo  $resultStr ;

42 }

43 

44 

45 

46 //获取微信的openid

47 function GetOpenid($c_code)

48 {

49     $url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=" . $appid . "&secret=" . $secret . "&code=" . $c_code .  "&grant_type=authorization_code";

50     //$url = "http://www.baidu.com";

51     $result = getData($url);

52 

53     $jsondecode = json_decode($result);

54     if($jsondecode != null){

55         if(property_exists ( $jsondecode, "openid" ) )

56         {

57             return $jsondecode->{"openid"};

58         }else{

59             return "code is invalid.";

60         }

61     }

62 

63     return null;

64 }

65 //获取https的get请求结果

66 function getData($c_url)

67 {

68     $curl = curl_init(); // 启动一个CURL会话

69     curl_setopt($curl, CURLOPT_URL, $c_url); // 要访问的地址

70     curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0); // 对认证证书来源的检查

71     curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 1); // 从证书中检查SSL加密算法是否存在

72     curl_setopt($curl, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']); // 模拟用户使用的浏览器

73     curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1); // 使用自动跳转

74     curl_setopt($curl, CURLOPT_AUTOREFERER, 1); // 自动设置Referer

75 //    curl_setopt($curl, CURLOPT_POST, 1); // 发送一个常规的Post请求

76 //    curl_setopt($curl, CURLOPT_POSTFIELDS, $data); // Post提交的数据包

77     curl_setopt($curl, CURLOPT_TIMEOUT, 30); // 设置超时限制防止死循环

78     curl_setopt($curl, CURLOPT_HEADER, 0); // 显示返回的Header区域内容

79     curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); // 获取的信息以文件流的形式返回

80     $tmpInfo = curl_exec($curl); // 执行操作

81     if (curl_errno($curl)) {

82        echo 'Errno'.curl_error($curl);//捕抓异常

83     }

84     curl_close($curl); // 关闭CURL会话

85     return $tmpInfo; // 返回数据

86 }

87 

88 ?>