block players with spaces in their name from joining

hey is there a way to block people with spaces in their name from joining the server?

 

Why would you? You'll just loose a lot of players...

 

how do i add quotes here?
$this->getServer()->dispatchCommand(new ConsoleCommandSender(), "setuperm ".$name." ".$perm);

 

PHP:

$this->getServer()->dispatchCommand(new ConsoleCommandSender(), "setuperm \"$name\" $perm");

 

thx