openstamanager/modules/backups/modutil.php

<?php
include_once __DIR__.'/../../core.php';

/**
 * Calculate the full size of a directory
 *
 * @param	string	$path
 */
function foldersize($path) {
    $total_size = 0;
    $files = scandir($path);
    $cleanPath = rtrim($path, '/'). '/';

    foreach($files as $t) {
        if ($t<>"." && $t<>"..") {
            $currentFile = $cleanPath . $t;
            if (is_dir($currentFile)) {
                $size = foldersize($currentFile);
                $total_size += $size;
            }
            else {
                $size = filesize($currentFile);
                $total_size += $size;
            }
        }   
    }

    return $total_size;
}


function format_size($size) {
	$units = explode(' ', 'B KB MB GB TB PB');

    $mod = 1024;

    for ($i = 0; $size > $mod; $i++) {
        $size /= $mod;
    }

    $endIndex = strpos($size, ".")+3;

    return substr( $size, 0, $endIndex).' '.$units[$i];
}

?>