is false neccesary without true??

[TimTimTimma]

I was just wondering I was finding myself today using ALOT of }else{'s in my module access/activity script and I was wondering, if something returns either true/false. is it neccesary to script the false part of it in? or can i simply have it return only true in specifiy situations, and php will automaticaly understand otherwise its false.

for example..

			switch ($Module_Info['access'])
			{
				case 1:
					if($user->id() > 1){
						return TRUE;
					}else{
						return FALSE;
					}
				break;

			case 2:
				if($user->lvl() == 99){
					return TRUE;
				}else{
					return FALSE;
				}
			break;

			default:
				return TRUE;
			break;
		}
	}else{
		if($user->lvl() == 99){
			return TRUE;
		}else{
			return FALSE;
		}
	}

must I use that script to show true/false or could it work with

			switch ($Module_Info['access'])
			{
				case 1:
					if($user->id() > 1){
						return TRUE;
					}
				break;

			case 2:
				if($user->lvl() == 99){
					return TRUE;
				}
			break;

			default:
				return TRUE;
			break;
		}

[bradgrafelman]

If you don't explicity return either TRUE or FALSE, then nothing at all will be returned. There is no default "FALSE" returned if a return() statement is lacking.

Also, your first code snippet had an extra '}' though that might just be because you pasted too much and we can't see the opening '{'.

[bubblenut]

If nothing is returned from a function the funtion returns null which in most cases equetes to fales. Although this isn't perfectly tidy solution it is common practice even in strictly typed languages like Java.

[bradgrafelman]

function testMe($test) {
	if($test == 'some non-extistant value') return TRUE;
}

$returned_value = testMe('testing');

echo var_dump($returned_value); // NULL

if($returned_value == FALSE) echo 'its false!'; // its false!

if(!$returned_value) echo 'its null or false!'; // its null or false!

if($returned_value === FALSE) echo 'its the boolean value FALSE'; // (nothing echo'd)