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<?php
/**
* @package Joomla.Platform
* @subpackage HTML
*
* @copyright Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('JPATH_PLATFORM') or die;
/**
* HTML helper class for rendering numbers.
*
* @package Joomla.Platform
* @subpackage HTML
* @since 11.1
*/
abstract class JHtmlNumber
{
/**
* Converts bytes to more distinguishable formats such as:
* kilobytes, megabytes, etc.
*
* By default, the proper format will automatically be chosen.
* However, one of the allowed unit types may also be used instead.
*
* @param integer $bytes The number of bytes.
* @param string $unit The type of unit to return.
* @param integer $precision The number of digits to be used after the decimal place.
*
* @return string The number of bytes in the proper units.
*
* @since 11.1
*/
public static function bytes($bytes, $unit = 'auto', $precision = 2)
{
// No explicit casting $bytes to integer here, since it might overflow
// on 32-bit systems
$precision = (int) $precision;
if (empty($bytes))
{
return 0;
}
$unitTypes = array('b', 'kb', 'MB', 'GB', 'TB', 'PB');
// Default automatic method.
$i = floor(log($bytes, 1024));
// User supplied method:
if ($unit !== 'auto' && in_array($unit, $unitTypes))
{
$i = array_search($unit, $unitTypes, true);
}
// TODO Allow conversion of units where $bytes = '32M'.
return round($bytes / pow(1024, $i), $precision) . ' ' . $unitTypes[$i];
}
}