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<?php
/**
* @version $Id: Memory.php 10831 2013-05-29 19:32:17Z btowles $
* @author RocketTheme http://www.rockettheme.com
* @copyright Copyright (C) 2007 - 2020 RocketTheme, LLC
* @license http://www.gnu.org/licenses/gpl-2.0.html GNU/GPLv2 only
*/
defined('ROKCOMMON') or die;
/**
*
*/
class RokCommon_Memory_Exception extends Exception
{
}
/**
*
*/
class RokCommon_Memory
{
/**
*
*/
const ERROR_UNKNOWN = 100;
/**
*
*/
const ERROR_SUSHIN = 101;
/**
* Gets the current memory limit set for the php.ini in bytes
* @static
* @return int the memory limit in bytes
*/
public static function getLimit()
{
$val = ini_get('memory_limit');
$val = self::convertSize($val);
return $val;
}
/**
* @static
*
* @param $size
*
* @return int|string
*/
protected static function convertSize($size)
{
$size = trim($size);
$last = strtolower($size[strlen($size) - 1]);
$size = (float)$size;
switch ($last) {
// The 'G' modifier is available since PHP 5.1.0
case 'g':
$size *= 1024;
case 'm':
$size *= 1024;
case 'k':
$size *= 1024;
}
return $size;
}
/**
* Gets the available free space in bytes
*
* @static
* @return int
*/
public static function getFreeSpace()
{
return self::getLimit() - self::getUsage();
}
/**
* @static
*
* @param $size
*
* @throws RokCommon_Memory_Exception
*/
public static function setLimit($size)
{
if (in_array('suhosin', get_loaded_extensions())) {
$suhosin_limit = self::convertSize(ini_get('suhosin.memory_limit'));
if ($size > $suhosin_limit) {
throw new RokCommon_Memory_Exception('Memory size limited by Suhosin. The suhosin.memory_limit setting needs to be adjusted', self::ERROR_SUSHIN);
}
}
ini_set('memory_limit', $size);
$new_limit = ini_get('memory_limit');
if ($size != self::convertSize($new_limit)) {
throw new RokCommon_Memory_Exception('Unable to automatically adjust memory limit. The memory_limit ini setting needs to be adjusted.', self::ERROR_UNKNOWN);
}
}
/**
* @static
* @return int
*/
public static function getUsage()
{
return memory_get_usage();
}
}