[RESOLVED] shorten check on multiple variables

[PartialReptile]

Might be a stupid question, but is there any way I can shorten something like:

if( (!isset($var1)) or (!isset($var2)) or (!isset($var3)) or (!isset($var4) )
{
	//Do something
}

Reason:

I have a form with about 20 inputs being sent and there are several checks I need to perform on each - just wondering if there's a shorter way of doing it than having to do 20 lines of or or or or or or or or or etc.

[HalfaBee]

You could do a foreach on an array of variable names.

$vars = array( 'a','b','c' )

$bad = FALSE;
foreach( $vars as $v ) {
    $bad |= !isset( $$v );
}
if( $bad ) {
// do something
}

[PartialReptile]

cheers.