Simple if statement returning unexpected results

[eluser]xwero[/eluser]
I think it has to do with the weak typing in php. That why the === operator is useful. If you do

Code:

$test1 = 0;
$test2 = 'string';
if ($test1 === $test2) {
    echo 'yes';
}

You get no output because it also checks the type.

I read something similar not so long ago with the explanation of similar behavior but i can't find it at the moment.