Laravel Blade Echo

Im trying to understand laravel. In my test, I've created a controller like this :

    public function getDirectorySize( $path = null)
{ 
$path="/folder/"; 
$pathlog="/laravel.log"; 
$pathbackup="/folder/"; 
$ar=getDirectorySize($path); 

$totalsize = 0; 
$totalcount = 0; 
$dircount = 0; 
if ($handle = opendir ($path)) 
{ 
while (false !== ($file = readdir($handle))) 
{ 
  $nextpath = $path . '/' . $file; 
  if ($file != '.' && $file != '..' && !is_link ($nextpath)) 
  { 
    if (is_dir ($nextpath)) 
    { 
      $dircount++; 
      $result = getDirectorySize($nextpath); 
      $totalsize += $result['size']; 
      $totalcount += $result['count']; 
      $dircount += $result['dircount']; 
    } 
    elseif (is_file ($nextpath)) 
    { 
      $totalsize += filesize ($nextpath); 
      $totalcount++; 
    } 
  } 
} 
} 
closedir ($handle); 
$total['size'] = $totalsize; 
$total['count'] = $totalcount; 
$total['dircount'] = $dircount; 
return $total; 

} 

in my blade i want to display data like this :

        Details for the path :  
        Details for the log : 
        Details for the backup :  
        Total size : 
        No. of files :  
        <? echo "No. of directories : ".$ar['dircount']."<br>"; ?>

But i got this error :

Undefined variable: path

I want to display any information from this function

via Chebli Mohamed