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<?php
/* SVN FILE: $Id: number.php 7296 2008-06-27 09:09:03Z gwoo $ */
/**
* Number Helper.
*
* Methods to make numbers more readable.
*
* PHP versions 4 and 5
*
* CakePHP(tm) : Rapid Development Framework <http://www.cakephp.org/>
* Copyright 2005-2008, 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 2005-2008, 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: 7296 $
* @modifiedby $LastChangedBy: gwoo $
* @lastmodified $Date: 2008-06-27 02:09:03 -0700 (Fri, 27 Jun 2008) $
* @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 AppHelper {
/**
* Formats a number with a level of precision.
*
* @param float $number A floating point number.
* @param integer $precision The precision of the returned number.
* @return float Enter description here...
* @static
*/
function precision($number, $precision = 3) {
return sprintf("%01.{$precision}f", $number);
}
/**
* Returns a formatted-for-humans file size.
*
* @param integer $length Size in bytes
* @return string Human readable size
* @static
*/
function toReadableSize($size) {
switch($size) {
case 0:
return '0 Bytes';
case 1:
return '1 Byte';
case $size < 1024:
return $size . ' Bytes';
case $size < 1024 * 1024:
return $this->precision($size / 1024, 0) . ' KB';
case $size < 1024 * 1024 * 1024:
return $this->precision($size / 1024 / 1024, 2) . ' MB';
case $size < 1024 * 1024 * 1024 * 1024:
return $this->precision($size / 1024 / 1024 / 1024, 2) . ' GB';
case $size < 1024 * 1024 * 1024 * 1024 * 1024:
return $this->precision($size / 1024 / 1024 / 1024 / 1024, 2) . ' TB';
}
}
/**
* Formats a number into a percentage string.
*
* @param float $number A floating point number
* @param integer $precision The precision of the returned number
* @return string Percentage string
* @static
*/
function toPercentage($number, $precision = 2) {
return $this->precision($number, $precision) . '%';
}
/**
* Formats a number into a currency format.
*
* @param float $number A floating point number
* @param integer $options if int then places, if string then before, if (,.-) then use it
* or array with places and before keys
* @return string formatted number
* @static
*/
function format($number, $options = false) {
$places = 0;
if (is_int($options)) {
$places = $options;
}
$separators = array(',', '.', '-', ':');
$before = $after = null;
if (is_string($options) && !in_array($options, $separators)) {
$before = $options;
}
$thousands = ',';
if (!is_array($options) && in_array($options, $separators)) {
$thousands = $options;
}
$decimals = '.';
if (!is_array($options) && in_array($options, $separators)) {
$decimals = $options;
}
$escape = true;
if (is_array($options)) {
$options = array_merge(array('before'=>'$', 'places' => 2, 'thousands' => ',', 'decimals' => '.'), $options);
extract($options);
}
$out = $before . number_format($number, $places, $decimals, $thousands) . $after;
if ($escape) {
return h($out);
}
return $out;
}
/**
* Formats a number into a currency format.
*
* @param float $number
* @param string $currency Shortcut to default options. Valid values are 'USD', 'EUR', 'GBP', otherwise
* set at least 'before' and 'after' options.
* @param array $options
* @return string Number formatted as a currency.
*/
function currency($number, $currency = 'USD', $options = array()) {
$default = array(
'before'=>'', 'after' => '', 'zero' => '0', 'places' => 2, 'thousands' => ',',
'decimals' => '.','negative' => '()', 'escape' => true
);
$currencies = array(
'USD' => array(
'before' => '$', 'after' => 'c', 'zero' => 0, 'places' => 2, 'thousands' => ',',
'decimals' => '.', 'negative' => '()', 'escape' => true
),
'GBP' => array(
'before'=>'£', 'after' => 'p', 'zero' => 0, 'places' => 2, 'thousands' => ',',
'decimals' => '.', 'negative' => '()','escape' => false
),
'EUR' => array(
'before'=>'€', 'after' => 'c', 'zero' => 0, 'places' => 2, 'thousands' => '.',
'decimals' => ',', 'negative' => '()', 'escape' => false
)
);
if (isset($currencies[$currency])) {
$default = $currencies[$currency];
} elseif (is_string($currency)) {
$options['before'] = $currency;
}
$options = array_merge($default, $options);
$result = null;
if ($number == 0 ) {
if ($options['zero'] !== 0 ) {
return $options['zero'];
}
$options['after'] = null;
} elseif ($number < 1 && $number > -1 ) {
$multiply = intval('1' . str_pad('', $options['places'], '0'));
$number = $number * $multiply;
$options['before'] = null;
$options['places'] = null;
} else {
$options['after'] = null;
}
$abs = abs($number);
$result = $this->format($abs, $options);
if ($number < 0 ) {
if($options['negative'] == '()') {
$result = '(' . $result .')';
} else {
$result = $options['negative'] . $result;
}
}
return $result;
}
}
?>
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