Flip a boolean

[tolien]

Is there any trivial way to flip a Boolean (ie true -> false, false -> true) in PHP?

I know I could use something like

if ($bool)
	{
		//$bool is true. Make $bool false.
		$bool = false;
	}
else
	{
		//$bool is false. Make $bool true.
		$bool = true;
	}

But that's a bit messy for what I want to do. Tried reading the manual but got nowhere fast.

 

[tolien]

Er, oh.

Ta.