includes/objectcache/HashBagOStuff.php

   1 <?php
   2 /**
   3  * Object caching using PHP arrays.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Cache
  22  */
  23
  24 /**
  25  * This is a test of the interface, mainly. It stores things in an associative
  26  * array, which is not going to persist between program runs.
  27  *
  28  * @ingroup Cache
  29  */
  30 class HashBagOStuff extends BagOStuff {
  31         var $bag;
  32
  33         function __construct() {
  34                 $this->bag = array();
  35         }
  36
  37         protected function expire( $key ) {
  38                 $et = $this->bag[$key][1];
  39
  40                 if ( ( $et == 0 ) || ( $et > time() ) ) {
  41                         return false;
  42                 }
  43
  44                 $this->delete( $key );
  45
  46                 return true;
  47         }
  48
  49         function get( $key ) {
  50                 if ( !isset( $this->bag[$key] ) ) {
  51                         return false;
  52                 }
  53
  54                 if ( $this->expire( $key ) ) {
  55                         return false;
  56                 }
  57
  58                 return $this->bag[$key][0];
  59         }
  60
  61         function set( $key, $value, $exptime = 0 ) {
  62                 $this->bag[$key] = array( $value, $this->convertExpiry( $exptime ) );
  63         }
  64
  65         function delete( $key, $time = 0 ) {
  66                 if ( !isset( $this->bag[$key] ) ) {
  67                         return false;
  68                 }
  69
  70                 unset( $this->bag[$key] );
  71
  72                 return true;
  73         }
  74
  75         function keys() {
  76                 return array_keys( $this->bag );
  77         }
  78 }
  79