function fillingin($buildarr,$response = 'NULL') {

if(strpos($buildarr[count($buildarr)-1],'.') === false) {$filename = ''; } else {$filename = array_pop($buildarr);}

$format = strpos($filename,'.');

$newaddres = '\'';
$filepath = '';
foreach($buildarr as $name) {
  if($name=='') continue;
  $newaddres = $newaddres.'../';
  $filepath = $filepath.$name.'/';
}
$newaddres = '<?php define(\'INCLUDE_CHECK\',true); require '.$newaddres.'mainsite.php\';';


if($filename=="") $filename='index.php';

if(file_exists($filepath.$filename)) return "already done";

if( !file_exists($filepath) ) mkdir($filepath, 0777, true);
if(is_numeric($format)) $newaddres = $response;
if($newaddres!='') {
if(!$handle = fopen($filepath.$filename , "w")) return "File does open";
if(fwrite($handle,$newaddres,strlen($newaddres))===false) return "cant write";
fclose($handle);
}