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							106 lines
						
					
					
						
							3.5 KiB
						
					
					
				
			
		
		
		
			
			
			
				
					
				
				
					
				
			
		
		
	
	
							106 lines
						
					
					
						
							3.5 KiB
						
					
					
				
								<?php
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								class JSSDK {
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								  private $appId;
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								  private $appSecret;
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								  public function __construct($appId, $appSecret) {
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								    $this->appId = $appId;
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								    $this->appSecret = $appSecret;
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								  }
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								  public function getSignPackage() {
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								    $jsapiTicket = $this->getJsApiTicket();
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								    // 注意 URL 一定要动态获取,不能 hardcode.
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								    $protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
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								    $url = "$protocol$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
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								    $timestamp = time();
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								    $nonceStr = $this->createNonceStr();
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								    // 这里参数的顺序要按照 key 值 ASCII 码升序排序
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								    $string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr×tamp=$timestamp&url=$url";
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								    $signature = sha1($string);
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								    $signPackage = array(
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								      "appId"     => $this->appId,
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								      "nonceStr"  => $nonceStr,
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								      "timestamp" => $timestamp,
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								      "url"       => $url,
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								      "signature" => $signature,
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								      "rawString" => $string
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								    );
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								    return $signPackage; 
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								  }
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								  private function createNonceStr($length = 16) {
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								    $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
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								    $str = "";
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								    for ($i = 0; $i < $length; $i++) {
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								      $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
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								    }
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								    return $str;
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								  }
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								  private function getJsApiTicket() {
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								    // 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
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								    $data = json_decode(file_get_contents("jsapi_ticket.json"));
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								    if ($data->expire_time < time()) {
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								      $accessToken = $this->getAccessToken();
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								      // 如果是企业号用以下 URL 获取 ticket
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								      // $url = "https://qyapi.weixin.qq.com/cgi-bin/get_jsapi_ticket?access_token=$accessToken";
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								      $url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$accessToken";
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								      $res = json_decode($this->httpGet($url));
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								      $ticket = $res->ticket;
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								      if ($ticket) {
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								        $data->expire_time = time() + 7000;
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								        $data->jsapi_ticket = $ticket;
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								        $fp = fopen("jsapi_ticket.json", "w");
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								        fwrite($fp, json_encode($data));
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								        fclose($fp);
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								      }
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								    } else {
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								      $ticket = $data->jsapi_ticket;
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								    }
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								    return $ticket;
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								  }
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								  private function getAccessToken() {
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								    // 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
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								    $data = json_decode(file_get_contents("access_token.json"));
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								    if ($data->expire_time < time()) {
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								      // 如果是企业号用以下URL获取access_token
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								      // $url = "https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=$this->appId&corpsecret=$this->appSecret";
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								      $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$this->appId&secret=$this->appSecret";
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								      $res = json_decode($this->httpGet($url));
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								      $access_token = $res->access_token;
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								      if ($access_token) {
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								        $data->expire_time = time() + 7000;
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								        $data->access_token = $access_token;
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								        $fp = fopen("access_token.json", "w");
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								        fwrite($fp, json_encode($data));
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								        fclose($fp);
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								      }
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								    } else {
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								      $access_token = $data->access_token;
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								    }
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								    return $access_token;
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								  }
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								  private function httpGet($url) {
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								    $curl = curl_init();
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								    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
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								    curl_setopt($curl, CURLOPT_TIMEOUT, 500);
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								    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
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								    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
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								    curl_setopt($curl, CURLOPT_URL, $url);
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								    $res = curl_exec($curl);
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								    curl_close($curl);
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								    return $res;
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								  }
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								}
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