1 <?php
 2 /**
 3  * Cross - a micro PHP 5 framework
 4  *
 5  * @link        http://www.crossphp.com
 6  * @license     MIT License
 7  */
 8 namespace Cross\Auth;
 9 
10 use Cross\I\HttpAuthInterface;
11 
12 /**
13  * @author wonli <wonli@live.com>
14  * Class SessionAuth
15  * @package Cross\Auth
16  */
17 class SessionAuth implements HttpAuthInterface
18 {
19     /**
20      * 加解密默认key
21      *
22      * @var string
23      */
24     protected $key;
25 
26     function __construct($key = '')
27     {
28         if ($key) {
29             $this->key = $key;
30         }
31 
32         if (!isset($_SESSION)) {
33             session_start();
34         }
35     }
36 
37     /**
38      * 设置session的值
39      *
40      * @param string $key
41      * @param string|array $value
42      * @param int $expire
43      * @return bool|mixed
44      */
45     function set($key, $value, $expire = 0)
46     {
47         if (is_array($value)) {
48             $value = json_encode($value);
49         }
50 
51         $_SESSION[$key] = $value;
52         return true;
53     }
54 
55     /**
56      * 获取session的值
57      *
58      * @param string $key
59      * @param bool $deCode
60      * @return bool|mixed
61      */
62     function get($key, $deCode = false)
63     {
64         if (false !== strpos($key, ':') && $deCode) {
65             list($key, $arrKey) = explode(':', $key);
66         }
67 
68         if (!isset($_SESSION[$key])) {
69             return false;
70         }
71 
72         $result = $_SESSION[$key];
73         if ($deCode) {
74             $result = json_decode($result, true);
75             if (isset($arrKey) && isset($result[$arrKey])) {
76                 return $result[$arrKey];
77             }
78         }
79 
80         return $result;
81     }
82 }
83 

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