<?php
class JSSDK {
private $appId;
private $appSecret;
public function __construct($appId, $appSecret) {
$this->appId = $appId;
$this->appSecret = $appSecret;
}
public function getSignPackage($url) {
$jsapiTicket = $this->getJsApiTicket();
if(!$url) {
$url = "http://$_SERVER[HTTP_HOST]" . '/v5/v5.html';
}
$timestamp = time();
$nonceStr = $this->createNonceStr();
// 這裏參數的順序要按照 key 值 ASCII 碼升序排序
$string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr×tamp=$timestamp&url=$url";
$signature = sha1($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 $str;
}
private function getFileName($name) {
//$fileName = sys_get_temp_dir() . "/weixin-" . $name;
$fileName = dirname(__FILE__) . "/weixin-". $name;
return $fileName;
}
private function saveData($name, $content) {
$fileName = $this->getFileName($name);
$fp = fopen($fileName, "wb+");
if($fp) {
fwrite($fp, $content);
fclose($fp);
}
return;
}
private function loadData($name, $defaultContent) {
$fileName = $this->getFileName($name);
$content = file_get_contents($fileName);
if($content) {
return $content;
}
else {
return $defaultContent;
}
return;
}
private function getJsApiTicket() {
$data = json_decode($this->loadData("jsapi_ticket.json", '{"jsapi_ticket":"", "expire_time":0}'));
if ($data->expire_time < time()) {
$accessToken = $this->getAccessToken();
$url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$accessToken";
$res = json_decode($this->httpGet($url));
$ticket = $res->ticket;
if ($ticket) {
$data->expire_time = time() + 3600;
$data->jsapi_ticket = $ticket;
$this->saveData("jsapi_ticket.json", json_encode($data));
}
} else {
$ticket = $data->jsapi_ticket;
}
return $ticket;
}
private function getAccessToken() {
$data = json_decode($this->loadData("access_token.json", '{"access_token":"", "expire_time": 0}'));
if ($data->expire_time < time()) {
$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$this->appId&secret=$this->appSecret";
$res = json_decode($this->httpGet($url));
if(!isset($res->access_token)) {
print_r($res);
exit;
}
$access_token = $res->access_token;
if ($access_token) {
$data->expire_time = time() + 3000;
$data->access_token = $access_token;
$this->saveData("access_token.json", json_encode($data));
}
} 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 $res;
}
}
session_start();
// if(!isset($_REQUEST['url'])) {
// echo "invalid arguments";
// exit;
// }
$appID = "微信公衆號id";
$appSecret = "祕鑰";
$url = $_REQUEST['url'];
$url = base64_decode($url);
$jssdk = new JSSDK($appID, $appSecret);
$signPackage = $jssdk->getSignPackage($url);
$signPackage['jsApiList'] = array('checkJsApi', 'chooseImage',
'onMenuShareTimeline', 'onMenuShareAppMessage',
'onMenuShareQQ', 'previewImage', 'uploadImage',
'downloadImage', 'getNetworkType');
echo json_encode($signPackage);
?>
微信公衆號:微信分享獲得配置信息
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