umask
    (PHP 3, PHP 4 )
umask -- Changes the current umask
Description
int 
umask ( int mask)
     umask() sets PHP's umask to mask & 0777 and
     returns the old umask. When PHP is being used as a server module,
     the umask is restored when each request is finished.
    
     umask() without arguments simply returns the
     current umask.