lib/session_handler.inc.php

   1 <?php
   2 class FileSessionHandler {
   3     private $savePath;
   4
   5     function open($savePath, $sessionName) {
   6         $this->savePath = $savePath;
   7         if (!is_dir($this->savePath)) {
   8             mkdir($this->savePath, 0777);
   9         }
  10
  11         return true;
  12     }
  13
  14     function close() {
  15         return true;
  16     }
  17
  18     function read($id) {
  19         return (string)@file_get_contents("$this->savePath/qt_sess_$id");
  20     }
  21
  22     function write($id, $data) {
  23         return file_put_contents("$this->savePath/qt_sess_$id", $data) === false ? false : true;
  24     }
  25
  26     function destroy($id) {
  27         $file = "$this->savePath/qt_sess_$id";
  28         if (file_exists($file)) {
  29             unlink($file);
  30         }
  31
  32         return true;
  33     }
  34
  35     function gc($maxlifetime) {
  36         foreach (glob("$this->savePath/qt_sess_*") as $file) {
  37             if (filemtime($file) + $maxlifetime < time() && file_exists($file)) {
  38                 unlink($file);
  39             }
  40         }
  41
  42         return true;
  43     }
  44 }
  45
  46 $handler = new FileSessionHandler();
  47 session_set_save_handler(
  48     array($handler, 'open'),
  49     array($handler, 'close'),
  50     array($handler, 'read'),
  51     array($handler, 'write'),
  52     array($handler, 'destroy'),
  53     array($handler, 'gc')
  54 );
  55
  56 // the following prevents unexpected effects when using objects as save handlers
  57 register_shutdown_function('session_write_close');
  58 ?>