$directoryname = str_replace(,/,$directoryname);
$dirnames = explode('/', $directoryname);
$total = count($dirnames) ;
$temp = '';
for($i=0; $i $temp .= $dirnames[$i].'/';
if (!is_dir($temp)) {
$oldmask = umask(0);
if (!mkdir($temp, 0777)) exit(不能建立目录 $temp);
umask($oldmask);
}
}
return true;
}