1: <?php
 2: 
 3: include_once "errorCode.php";
 4: 
 5: /**
 6:  * SHA1 class
 7:  *
 8:  * 计算公众平台的消息签名接口.
 9:  */
10: class SHA1
11: {
12:     /**
13:      * 用SHA1算法生成安全签名
14:      * @param string $token 票据
15:      * @param string $timestamp 时间戳
16:      * @param string $nonce 随机字符串
17:      * @param string $encrypt 密文消息
18:      */
19:     public function getSHA1($token, $timestamp, $nonce, $encrypt_msg)
20:     {
21:         //排序
22:         try {
23:             $array = array($encrypt_msg, $token, $timestamp, $nonce);
24:             sort($array, SORT_STRING);
25:             $str = implode($array);
26:             return array(ErrorCode::$OK, sha1($str));
27:         } catch (Exception $e) {
28:             //print $e . "\n";
29:             return array(ErrorCode::$ComputeSignatureError, null);
30:         }
31:     }
32: 
33: }
34: 
35: 
36: ?>