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