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number.php

<?php
/* SVN FILE: $Id: number.php 5117 2007-05-18 16:46:55Z phpnut $ */
/**
 * Number Helper.
 *
 * Methods to make numbers more readable.
 *
 * PHP versions 4 and 5
 *
 * CakePHP(tm) :  Rapid Development Framework <http://www.cakephp.org/>
 * Copyright 2005-2007, Cake Software Foundation, Inc.
 *                                              1785 E. Sahara Avenue, Suite 490-204
 *                                              Las Vegas, Nevada 89104
 *
 * Licensed under The MIT License
 * Redistributions of files must retain the above copyright notice.
 *
 * @filesource
 * @copyright           Copyright 2005-2007, Cake Software Foundation, Inc.
 * @link                      http://www.cakefoundation.org/projects/info/cakephp CakePHP(tm) Project
 * @package             cake
 * @subpackage          cake.cake.libs.view.helpers
 * @since               CakePHP(tm) v 0.10.0.1076
 * @version             $Revision: 5117 $
 * @modifiedby          $LastChangedBy: phpnut $
 * @lastmodified  $Date: 2007-05-18 11:46:55 -0500 (Fri, 18 May 2007) $
 * @license             http://www.opensource.org/licenses/mit-license.php The MIT License
 */
/**
 * Number helper library.
 *
 * Methods to make numbers more readable.
 *
 * @package       cake
 * @subpackage    cake.cake.libs.view.helpers
 */
class NumberHelper extends Helper{
/**
 * Formats a number with a level of precision.
 *
 * @param  float  $number     A floating point number.
 * @param  integer $precision The precision of the returned number.
 * @return float Enter description here...
 * @access public
 */
       function precision($number, $precision = 3) {
              return sprintf("%01.{$precision}f", $number);
       }

/**
 * Returns a formatted-for-humans file size.
 *
 * @param integer $length Size in bytes
 * @return string Human readable size
 * @access public
 */
       function toReadableSize($size) {
              switch($size)
                        {
                        case 1: return '1 Byte';

                        case $size < 1024: return $size . ' Bytes';

                        case $size < 1024 * 1024: return NumberHelper::precision($size / 1024, 0) . ' KB';

                        case $size < 1024 * 1024 * 1024: return NumberHelper::precision($size / 1024 / 1024, 2) . ' MB';

                        case $size < 1024 * 1024 * 1024 * 1024:
                              return NumberHelper::precision($size / 1024 / 1024 / 1024, 2) . ' GB';

                        case $size < 1024 * 1024 * 1024 * 1024 * 1024:
                              return NumberHelper::precision($size / 1024 / 1024 / 1024 / 1024, 2) . ' TB';
                        }
       }

/**
 * Formats a number into a percentage string.
 *
 * @param float $number A floating point number
 * @param integer $precision The precision of the returned number
 * @return string Percentage string
 * @access public
 */
       function toPercentage($number, $precision = 2) {
              return NumberHelper::precision($number, $precision) . '%';
       }
}
?>

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