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16 years ago
This is an updated version of my previous filesize2bytes.

The return type now it's really an int.



<?php

/**

 * Converts human readable file size (e.g. 10 MB, 200.20 GB) into bytes.

 *

 * @param string $str

 * @return int the result is in bytes

 * @author Svetoslav Marinov

 * @author http://slavi.biz

 */

function filesize2bytes($str) {

    $bytes = 0;



    $bytes_array = array(

        'B' => 1,

        'KB' => 1024,

        'MB' => 1024 * 1024,

        'GB' => 1024 * 1024 * 1024,

        'TB' => 1024 * 1024 * 1024 * 1024,

        'PB' => 1024 * 1024 * 1024 * 1024 * 1024,

    );



    $bytes = floatval($str);



    if (preg_match('#([KMGTP]?B)$#si', $str, $matches) && !empty($bytes_array[$matches[1]])) {

        $bytes *= $bytes_array[$matches[1]];

    }



    $bytes = intval(round($bytes, 2));



    return $bytes;

}

?>
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