if then statement for caps or no caps

[fireineyes]

I want to make sure that all versions of a variable's capitalization is returned. I wrote this code...

if ($url_state == "CA") {
include ('include/ca.inc');
} else {
echo "This is not California!";
}

but when "ca" is the variable, I get "This is not California" even if it is? How do I make sure all versions of California's initials are covered?

--Chris

[LordShryku]

strtoupper()