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         /**
  38          * @param $key string
  39          * @return bool
  40          */
  41         protected function expire( $key ) {
  42                 $et = $this->bag[$key][1];
  43
  44                 if ( ( $et == 0 ) || ( $et > time() ) ) {
  45                         return false;
  46                 }
  47
  48                 $this->delete( $key );
  49
  50                 return true;
  51         }
  52
  53         /**
  54          * @param $key string
  55          * @return bool|mixed
  56          */
  57         function get( $key ) {
  58                 if ( !isset( $this->bag[$key] ) ) {
  59                         return false;
  60                 }
  61
  62                 if ( $this->expire( $key ) ) {
  63                         return false;
  64                 }
  65
  66                 return $this->bag[$key][0];
  67         }
  68
  69         /**
  70          * @param $key string
  71          * @param $value mixed
  72          * @param $exptime int
  73          * @return bool
  74          */
  75         function set( $key, $value, $exptime = 0 ) {
  76                 $this->bag[$key] = array( $value, $this->convertExpiry( $exptime ) );
  77                 return true;
  78         }
  79
  80         /**
  81          * @param $key string
  82          * @param $time int
  83          * @return bool
  84          */
  85         function delete( $key, $time = 0 ) {
  86                 if ( !isset( $this->bag[$key] ) ) {
  87                         return false;
  88                 }
  89
  90                 unset( $this->bag[$key] );
  91
  92                 return true;
  93         }
  94
  95         /**
  96          * @return array
  97          */
  98         function keys() {
  99                 return array_keys( $this->bag );
 100         }
 101 }
 102