1: <?php namespace Laravel\Session\Drivers;
 2: 
 3: class File extends Driver implements Sweeper {
 4: 
 5:     /**
 6:      * The path to which the session files should be written.
 7:      *
 8:      * @var string
 9:      */
10:     private $path;
11: 
12:     /**
13:      * Create a new File session driver instance.
14:      *
15:      * @param  string        $path
16:      * @return void
17:      */
18:     public function __construct($path)
19:     {
20:         $this->path = $path;
21:     }
22: 
23:     /**
24:      * Load a session from storage by a given ID.
25:      *
26:      * If no session is found for the ID, null will be returned.
27:      *
28:      * @param  string  $id
29:      * @return array
30:      */
31:     public function load($id)
32:     {
33:         if (file_exists($path = $this->path.$id))
34:         {
35:             return unserialize(file_get_contents($path));
36:         }
37:     }
38: 
39:     /**
40:      * Save a given session to storage.
41:      *
42:      * @param  array  $session
43:      * @param  array  $config
44:      * @param  bool   $exists
45:      * @return void
46:      */
47:     public function save($session, $config, $exists)
48:     {
49:         file_put_contents($this->path.$session['id'], serialize($session), LOCK_EX);
50:     }
51: 
52:     /**
53:      * Delete a session from storage by a given ID.
54:      *
55:      * @param  string  $id
56:      * @return void
57:      */
58:     public function delete($id)
59:     {
60:         if (file_exists($this->path.$id))
61:         {
62:             @unlink($this->path.$id);
63:         }
64:     }
65: 
66:     /**
67:      * Delete all expired sessions from persistent storage.
68:      *
69:      * @param  int   $expiration
70:      * @return void
71:      */
72:     public function sweep($expiration)
73:     {
74:         $files = glob($this->path.'*');
75: 
76:         if ($files === false) return;
77: 
78:         foreach ($files as $file)
79:         {
80:             if (filetype($file) == 'file' and filemtime($file) < $expiration)
81:             {
82:                 @unlink($file);
83:             }
84:         }
85:     }
86:     
87: }