human readable byte format

Inspired by: http://www.phpfront.com/php/Convert-Bytes-to-corresponding-size/Converts number in bytes to the number in bytes, megabytes, gigabytes, terabytes, etc. Works well as far as I can see!

<?php
function humanReadableOctets($octets)
    {
        $units = array('B', 'kB', 'MB', 'GB', 'TB'); // ...etc

        for ($i = 0, $size =$octets; $size>1024; $size=$size/1024)
            $i++;

        return number_format($size, 2) . ' ' . $units[min($i, count($units) -1 )];
    }
?>