[Resolved] Comparing negative values

[Fargoth]

I have a function that returns 1 on success and a different negative value depending on what went wrong if there was an error. When I check the return value this happens (simplified):

$result = thefunction(); // result is 1

echo $result; // outputs 1

if($result == -1) {
    // (some error happened)
    echo "result was -1"; // but i still see this
}

Why does PHP not differentiate between negative values?!?

[Fargoth]

Forget that - I've found the problem. The function was returning true - not 1. I've always presumed TRUE and FALSE are shorthand for 1 and 0, but true is anything non-zero.