PHP copy function and Apache group - php

Question

I have a web application that generate some php files for new members in sub-directories, I'm using PHP copy function to do that, but members web pages gives 500 Internal Server Error, and the script is working fine if uploaded by FTP, with the hosting account, or the root account.
I think the problem is with the "apache apache" group, because after uploading files with the "root root" group, files are working fine, please help!
this is the function used to copy the whole files in my directory to users ones :
function smartCopy($source, $dest, $options=array('folderPermission'=>0775,'filePermission'=>0775))
{
$result=false;
if (is_file($source)) {
if ($dest[strlen($dest)-1]=='/') {
if (!file_exists($dest)) {
cmfcDirectory::makeAll($dest,$options['folderPermission'],true);
}
$__dest=$dest."/".basename($source);
} else {
$__dest=$dest;
}
$result=copy($source, $__dest);
chmod($__dest,$options['filePermission']);
} elseif(is_dir($source)) {
if ($dest[strlen($dest)-1]=='/') {
if ($source[strlen($source)-1]=='/') {
//Copy only contents
} else {
//Change parent itself and its contents
$dest=$dest.basename($source);
#mkdir($dest);
chmod($dest,$options['filePermission']);
}
} else {
if ($source[strlen($source)-1]=='/') {
//Copy parent directory with new name and all its content
#mkdir($dest,$options['folderPermission']);
chmod($dest,$options['filePermission']);
} else {
//Copy parent directory with new name and all its content
#mkdir($dest,$options['folderPermission']);
chmod($dest,$options['filePermission']);
}
}
$dirHandle=opendir($source);
while($file=readdir($dirHandle))
{
if($file!="." && $file!="..")
{
if(!is_dir($source."/".$file)) {
$__dest=$dest."/".$file;
} else {
$__dest=$dest."/".$file;
}
//echo "$source/$file ||| $__dest<br />";
$result=smartCopy($source."/".$file, $__dest, $options);
}
}
closedir($dirHandle);
} else {
$result=false;
}
return $result;
}
Notice : there are no problem with permissions.

Answer 1

I used this function to solve my problem :
$oldmask = umask(0);
mkdir("apps/$appid", 0755);
umask($oldmask);