php頁面調用微信掃一掃

1. functions.php
2. <?php
3. define("appID", "微信公衆號appId");
4. define("appsecret", "");
5.  
6. class JSSDK {
7.   private $appId;
8.   private $appSecret;
9.  
10.   public function __construct($appId, $appSecret) {
11.     $this->appId = $appId;
12.     $this->appSecret = $appSecret;
13.   }
14.  
15.   public function getSignPackage() {
16.     $jsapiTicket = $this->getJsApiTicket();
17.     $url = "http://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
18.     $timestamp = time();
19.     $nonceStr = $this->createNonceStr();
20.  
21.     $string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr×tamp=$timestamp&url=$url";
22.  
23.     $signature = sha1($string);
24.  
25.     $signPackage = array(
26.       "appId"     => $this->appId,
27.       "nonceStr"  => $nonceStr,
28.       "timestamp" => $timestamp,
29.       "url"       => $url,
30.       "signature" => $signature,
31.       "rawString" => $string
32.     );
33.     return $signPackage; 
34.   }
35.  
36.   private function createNonceStr($length = 16) {
37.     $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
38.     $str = "";
39.     for ($i = 0; $i < $length; $i++) {
40.       $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
41.     }
42.     return $str;
43.   }
44.  
45.   private function getJsApiTicket() {
46.     $data = json_decode(file_get_contents("wp-token/jsapi_ticket.json"));
47.     if ($data->expire_time < time()) {
48.       $accessToken = $this->getAccessToken();
49.       $url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$accessToken";
50.       $res = json_decode($this->httpGet($url));
51.       $ticket = $res->ticket;
52.       if ($ticket) {
53.         $data->expire_time = time() + 7000;
54.         $data->jsapi_ticket = $ticket;
55.         $fp = fopen("wp-token/jsapi_ticket.json", "w");
56.         fwrite($fp, json_encode($data));
57.         fclose($fp);
58.       }
59.     } else {
60.       $ticket = $data->jsapi_ticket;
61.     }
62.  
63.     return $ticket;
64.   }
65.  
66.   public function getAccessToken() {
67.     $data = json_decode(file_get_contents("wp-token/access_token.json"));
68.     if ($data->expire_time < time()) {
69.       $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$this->appId&secret=$this->appSecret";
70.       $res = json_decode($this->httpGet($url));
71.       $access_token = $res->access_token;
72.       if ($access_token) {
73.         $data->expire_time = time() + 7000;
74.         $data->access_token = $access_token;
75.         $fp = fopen("wp-token/access_token.json", "w");
76.         fwrite($fp, json_encode($data));
77.         fclose($fp);
78.       }
79.     } else {
80.       $access_token = $data->access_token;
81.     }
82.     return $access_token;
83.   }
84.  
85.   public function httpGet($url) {
86.     $curl = curl_init();
87.     curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
88.     curl_setopt($curl, CURLOPT_TIMEOUT, 500);
89.     curl_setopt($curl, CURLOPT_URL, $url);
90.  
91.     $res = curl_exec($curl);
92.     curl_close($curl);
93.  
94.     return $res;
95.   }
96. }
97. ?>
98. --------------------- 
99. <div class="blockcode"><blockquote><?php
100. require_once("functions.php");
101. $jssdk=new JSSDK(appID,appsecret);
102. $signPackage = $jssdk->GetSignPackage();
103. require_once('header.php');
104. ?>
105. <a href="javascript:;">掃一掃</a>
106. <?php
107. require_once('footer.php');
108. ?>
109. <script src="scripts/jquery/3.1.1/jquery.min.js"></script>
110. <script src="scripts/jweixin-1.0.0.js"></script>
111. <script>
112.   wx.config({
113.     debug: false,
114.     appId: '<?php echo $signPackage["appId"];?>',
115.     timestamp: <?php echo $signPackage["timestamp"];?>,
116.     nonceStr: '<?php echo $signPackage["nonceStr"];?>',
117.     signature: '<?php echo $signPackage["signature"];?>',
118.     jsApiList: [
119.       // 所有要調用的 API 都要加到這個列表中
120.           "scanQRCode"
121.     ]
122.   });
123.   wx.ready(function () {
124.     // 在這裏調用 API
125.         $(document).on("click","a",function(){
126.                 wx.scanQRCode({
127.                         needResult: 1, // 默認爲0，掃描結果由微信處理，1則直接返回掃描結果，
128.                         scanType: ["qrCode","barCode"], // 可以指定掃二維碼還是一維碼，默認二者都有
129.                         success: function (res) {
130.                                 //alert(res);
131.                                 for(i in res ){
132.                                 //  alert(i);           //獲得屬性 
133.                                   alert(i + "---" + res[i]);  //獲得屬性值
134.                                 }
135.                                 //var result = res.resultStr; // 當needResult 爲 1 時，掃碼返回的結果
136.                         }
137.                 });
138.  
139.         })
140.   });
141. </script>
142. --------------------- 
143.  
144.  

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