|
|
|
<?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 一定要动态获取，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();
|
|
|
|
|
|
|
|
// 这里参数的顺序要按照 key 值 ASCII 码升序排序
|
|
|
|
$string = "jsapi_ticket=$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 getJsApiTicket() {
|
|
|
|
// jsapi_ticket 应该全局存储与更新，以下代码以写入到文件中做示例
|
|
|
|
$data = json_decode(file_get_contents("jsapi_ticket.json"));
|
|
|
|
if ($data->expire_time < time()) {
|
|
|
|
$accessToken = $this->getAccessToken();
|
|
|
|
// 如果是企业号用以下 URL 获取 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 应该全局存储与更新，以下代码以写入到文件中做示例
|
|
|
|
$data = json_decode(file_get_contents("access_token.json"));
|
|
|
|
if ($data->expire_time < time()) {
|
|
|
|
// 如果是企业号用以下URL获取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;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
