PHP conditional test func call against two values

Question

I was wondering if there's a one liner for PHP that would allow me test multiple values against a function call. As example, say I want to test if foo() returns either 1 or 2, (in pseudo code)

if( [1||2]==foo() );

Maybe above is a bad example of what I mean. Currently if I want to test two values against a function call I would use:

$test = foo();
if( 1==$test || 2==$test );

Its these two lines that I would like to simplify into one

Answer 1

There is nothing like that in PHP, however you can go for something like this -- even tho I'm not really recommending it:

if ( in_array(foo(), array(1, 2), true) ) ...

Please note that it's not gonna work on && conditions and you're limited only to == and ===.

Answer 2

In the specific example given this would work:

if ( abs( foo() - 1.5 ) == 0.5 )

This works for two number values, but for the obvious reasons is not very easy to generalise