Get Format Size Units

FormatSizeUnits.php

<?php
/**
 * @author      Hossam Youssef <Hossam.mox@gmail.com.com>
 * @copyright   2015 Hossam Youssef
 * @license     https://opensource.org/licenses/MIT
 *
 * MIT LICENSE
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 
/**
 * Get Format Size Units
 * 
 * @param  Int  $bytes
 * @return String.
 */
function formatSizeUnits($bytes)
{
    if ($bytes >= 1208925819614629174706176)
        $bytes = number_format($bytes / 1208925819614629174706176, 2) . ' YB'; // Yotta Bytes
    elseif ($bytes >= 1180591620717411303424)
        $bytes = number_format($bytes / 1180591620717411303424, 2) . ' ZB'; // Zetta Bytes
    elseif ($bytes >= 1152921504606846976)
        $bytes = number_format($bytes / 1152921504606846976, 2) . ' EB'; // Exa Bytes
    elseif ($bytes >= 1125899906842624)
        $bytes = number_format($bytes / 1125899906842624, 2) . ' PB'; // Peta Bytes
    elseif ($bytes >= 1099511627776)
        $bytes = number_format($bytes / 1099511627776, 2) . ' TB'; // Tera Bytes
    elseif ($bytes >= 1073741824)
        $bytes = number_format($bytes / 1073741824, 2) . ' GB'; // Giga Bytes
    elseif ($bytes >= 1048576)
        $bytes = number_format($bytes / 1048576, 2) . ' MB'; // Mage Bytes
    elseif ($bytes >= 1024)
        $bytes = number_format($bytes / 1024, 2) . ' KB'; //Kilo Bytes
    elseif ($bytes > 1)
        $bytes = $bytes . ' bytes';
    elseif ($bytes == 1)
        $bytes = $bytes . ' byte';
    else
        $bytes = '0 bytes';

    return $bytes;
}