類庫代碼:
<?php
class JSSDK {
private $appId;
private $appSecret;
public function __construct($appId, $appSecret) {
$this->appId = $appId;
$this->appSecret = $appSecret;
}
public function getSignPackage() {
$jsapiTicket = $this->getJsApiTicket();
// 注意 URL 一定要動態獲取，不能 hardcode.
$protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
$url = "$protocol$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
$timestamp = time();
$nonceStr = $this->createNonceStr();
// 這里參數的順序要按照 key 值 ASCII 碼升序排序
$string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr×tamp=$timestamp&url=$url";
//$string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr×tamp=$timestamp&url=$url";
//echo $string;
$signature = sha1($string);
$signPackage = array(
"appId" => $this->appId,
"nonceStr" => $nonceStr,
"timestamp" => $timestamp,
"url" => $url,
"signature" => $signature,
"rawString" => $string
);
return $signPackage;
}
private function createNonceStr($length = 16) {
$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
$str = "";
for ($i = 0; $i < $length; $i++) {
$str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
}
return $str;
}
private function getJsApiTicket() {
// jsapi_ticket 應該全局存儲與更新，以下代碼以寫入到文件中做示例
$data = json_decode(file_get_contents("/home/wwwroot/zksh.2om.cn/extend/org/jssdk/jsapi_ticket.json"));
if ($data->expire_time < time()) {
$accessToken = $this->getAccessToken();
// 如果是企業號用以下 URL 獲取 ticket
// $url = "https://qyapi.weixin.qq.com/cgi-bin/get_jsapi_ticket?access_token=$accessToken";
$url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$accessToken";
$res = json_decode($this->httpGet($url));
$ticket = $res->ticket;
if ($ticket) {
$data->expire_time = time() + 7000;
$data->jsapi_ticket = $ticket;
$fp = fopen("jsapi_ticket.json", "w");
fwrite($fp, json_encode($data));
fclose($fp);
}
} else {
$ticket = $data->jsapi_ticket;
}
return $ticket;
}
private function getAccessToken() {
// access_token 應該全局存儲與更新，以下代碼以寫入到文件中做示例
$data = json_decode(file_get_contents("/home/wwwroot/zksh.2om.cn/extend/org/jssdk/access_token.json"));
if ($data->expire_time < time()) {
// 如果是企業號用以下URL獲取access_token
// $url = "https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=$this->appId&corpsecret=$this->appSecret";
$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$this->appId&secret=$this->appSecret";
$res = json_decode($this->httpGet($url));
$access_token = $res->access_token;
if ($access_token) {
$data->expire_time = time() + 7000;
$data->access_token = $access_token;
$fp = fopen("access_token.json", "w");
fwrite($fp, json_encode($data));
fclose($fp);
}
} else {
$access_token = $data->access_token;
}
return $access_token;
}
private function httpGet($url) {
$curl = curl_init();
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_TIMEOUT, 500);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($curl, CURLOPT_URL, $url);
$res = curl_exec($curl);
curl_close($curl);
return $res;
}
}
?>
jsapi_ticket.json文件代碼:
{"jsapi_ticket":"","expire_time":0}
PHP前端頁面代碼:
<?php
require "extend/org/jssdk/jssdk.php";
$jssdk = new JSSDK("你的AppId", "你的AppSecret");
$signPackage = $jssdk->GetSignPackage();
?>
<!DOCTYPE html>
<html><head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
<title>微信掃一掃</title>
</head>
<body>
<h1 id="wxcode" style="text-align: center;">掃一掃</h1>
<script type="text/javascript" src="__JS__/jquery.min.js"></script><!--調用jquery.min.js文件-->
<script src="https://res.wx.qq.com/open/js/jweixin-1.4.0.js"></script>
<script>
console.log('<?php echo $signPackage["appId"];?>');
console.log('<?php echo $signPackage["timestamp"];?>');
console.log('<?php echo $signPackage["nonceStr"];?>');
console.log('<?php echo $signPackage["signature"];?>');
wx.config({
// 開啟調試模式,調用的所有api的返回值會在客戶端alert出來，若要查看傳入的參數，可以在pc端打開，參數信息會通過log打出，僅在pc端時才會打印。
debug: false,
// 必填，公眾號的唯一標識
// appId: "wx259ea197bf8b2eab",
appId: "<?php echo $signPackage["appId"];?>",
// 必填，生成簽名的時間戳
timestamp:"<?php echo $signPackage["timestamp"];?>",
// 必填，生成簽名的隨機串
nonceStr:"<?php echo $signPackage["nonceStr"];?>",
// 必填，簽名，見附錄1
// signature:"805c5e6f956fa5572b5b3ccc65d7581fe6cd37e1",
signature:"<?php echo $signPackage["signature"];?>",
// 必填，需要使用的JS接口列表，所有JS接口列表見附錄2
jsApiList : [ 'scanQRCode' ]
});
wx.error(function(res) {
alert("----------出錯了-----------：" + res.errMsg);//這個地方的好處就是wx.config配置錯誤，會彈出窗口哪里錯誤，然后根據微信文檔查詢即可。
});
wx.ready(function() {
wx.checkJsApi({
jsApiList : ['scanQRCode'],
success : function(res) {
// console.log(444);
}
});
//點擊按鈕掃描二維碼
$('#wxcode').click(function(){
// alert(1);
wx.scanQRCode({
needResult: 0, // 默認為0，掃描結果由微信處理，1則直接返回掃描結果，
scanType: ["qrCode","barCode"], // 可以指定掃二維碼還是一維碼，默認二者都有
success: function (res) {
var result = res.resultStr; // 當needResult 為 1 時，掃碼返回的結果
// alert(222);
}
});
})
});
</script>
</body>
</html>
<--此代碼為借鑒網絡后,PHP實際可用代碼-->