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<?php
/**
* Object caching using PHP arrays.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup Cache
*/
/**
* This is a test of the interface, mainly. It stores things in an associative
* array, which is not going to persist between program runs.
*
* @ingroup Cache
*/
class HashBagOStuff extends BagOStuff {
/** @var array */
protected $bag;
function __construct() {
$this->bag = array();
}
/**
* @param string $key
* @return bool
*/
protected function expire( $key ) {
$et = $this->bag[$key][1];
if ( ( $et == 0 ) || ( $et > time() ) ) {
return false;
}
$this->delete( $key );
return true;
}
/**
* @param string $key
* @param mixed $casToken [optional]
* @return bool|mixed
*/
function get( $key, &$casToken = null ) {
if ( !isset( $this->bag[$key] ) ) {
return false;
}
if ( $this->expire( $key ) ) {
return false;
}
$casToken = serialize( $this->bag[$key][0] );
return $this->bag[$key][0];
}
/**
* @param string $key
* @param mixed $value
* @param int $exptime
* @return bool
*/
function set( $key, $value, $exptime = 0 ) {
$this->bag[$key] = array( $value, $this->convertExpiry( $exptime ) );
return true;
}
/**
* @param mixed $casToken
* @param string $key
* @param mixed $value
* @param int $exptime
* @return bool
*/
function cas( $casToken, $key, $value, $exptime = 0 ) {
if ( serialize( $this->get( $key ) ) === $casToken ) {
return $this->set( $key, $value, $exptime );
}
return false;
}
/**
* @param string $key
* @param int $time
* @return bool
*/
function delete( $key, $time = 0 ) {
if ( !isset( $this->bag[$key] ) ) {
return false;
}
unset( $this->bag[$key] );
return true;
}
}
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