63 lines
1.6 KiB
PHP
63 lines
1.6 KiB
PHP
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<?php
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/**
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* @package Joomla.Libraries
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* @subpackage HTML
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*
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* @copyright Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
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* @license GNU General Public License version 2 or later; see LICENSE
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*/
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defined('JPATH_PLATFORM') or die;
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/**
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* HTML helper class for rendering numbers.
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*
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* @package Joomla.Libraries
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* @subpackage HTML
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* @since 1.6
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*/
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abstract class JHtmlNumber
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{
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/**
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* Converts bytes to more distinguishable formats such as:
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* kilobytes, megabytes, etc.
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*
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* By default, the proper format will automatically be chosen.
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* However, one of the allowed unit types may also be used instead.
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*
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* @param integer $bytes The number of bytes.
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* @param string $unit The type of unit to return.
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* @param integer $precision The number of digits to be used after the decimal place.
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*
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* @return string The number of bytes in the proper units.
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*
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* @since 1.6
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*/
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public static function bytes($bytes, $unit = 'auto', $precision = 2)
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{
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// No explicit casting $bytes to integer here, since it might overflow
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// on 32-bit systems
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$precision = (int) $precision;
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if (empty($bytes))
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{
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return 0;
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}
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$unitTypes = array('b', 'kb', 'MB', 'GB', 'TB', 'PB');
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// Default automatic method.
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$i = floor(log($bytes, 1024));
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// User supplied method:
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if ($unit !== 'auto' && in_array($unit, $unitTypes))
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{
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$i = array_search($unit, $unitTypes, true);
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}
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// TODO Allow conversion of units where $bytes = '32M'.
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return round($bytes / pow(1024, $i), $precision) . ' ' . $unitTypes[$i];
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}
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}
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