<?php
if (isset($_GET['id'])){
  $var = $_GET['id'];
}
 if ($var === '1') {
        $path = "./data/";
   }
   else if ($var === '2') {
        $path = "./scenario/";
   }
 if ($handle = opendir($path)) {
   while (false !== ($file = readdir($handle))) {
          if ($file != "." && $file != ".." && is_dir($path.$file) === false) {
            $thelist = $thelist.$file;
	    $thelist = $thelist." (";
    	    $thelist = $thelist.FileSizeConvert(filesize($path.$file));
            $thelist = $thelist.")\r\n";
          }
       }
  closedir($handle);
  }
 echo $thelist;

function FileSizeConvert($bytes)
{
if ($bytes === 0)
return "0 B";
    $bytes = floatval($bytes);
        $arBytes = array(
            0 => array(
                "UNIT" => "TB",
                "VALUE" => pow(1024, 4)
            ),
            1 => array(
                "UNIT" => "GB",
                "VALUE" => pow(1024, 3)
            ),
            2 => array(
                "UNIT" => "MB",
                "VALUE" => pow(1024, 2)
            ),
            3 => array(
                "UNIT" => "KB",
                "VALUE" => 1024
            ),
            4 => array(
                "UNIT" => "B",
                "VALUE" => 1
            ),
        );

    foreach($arBytes as $arItem)
    {
        if($bytes >= $arItem["VALUE"])
        {
            $result = $bytes / $arItem["VALUE"];
            $result = str_replace(".", "," , strval(round($result, 2)))." ".$arItem["UNIT"];
            break;
        }
    }
    return $result;
}
?>