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<?php
/*
* Spring Signage Ltd - http://www.springsignage.com
* Copyright (C) 2015 Spring Signage Ltd
* (ByteFormatter.php)
*/
namespace Xibo\Helper;
/**
* Class ByteFormatter
* @package Xibo\Helper
*/
class ByteFormatter
{
/**
* Format Bytes
* http://stackoverflow.com/questions/2510434/format-bytes-to-kilobytes-megabytes-gigabytes
* @param int $size The file size in bytes
* @param int $precision The precision to go to
* @param bool $si Use SI units or not
* @return string The Formatted string with suffix
*/
public static function format($size, $precision = 2, $si = false)
{
if ($size == 0)
return 0;
if ($si === false) {
// IEC prefixes (binary)
$suffixes = array('B', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB');
$mod = 1024;
$base = log($size) / log($mod);
} else {
// SI prefixes (decimal)
$suffixes = array('B', 'kB', 'MB', 'GB', 'TB', 'PB');
$mod = 1000;
$base = log($size) / log($mod);
}
return round(pow($mod, $base - floor($base)), $precision) . ' ' . $suffixes[(int)floor($base)];
}
/**
* @param $val
* @return int|string
*/
public static function toBytes($val) {
$val = trim($val);
$last = strtolower($val[strlen($val)-1]);
$val = substr($val, 0, -1);
switch($last) {
// The 'G' modifier is available since PHP 5.1.0
case 'g':
$val *= 1024;
case 'm':
$val *= 1024;
case 'k':
$val *= 1024;
}
return $val;
}
}
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