Possible Duplicate:
PHP calculate age
I'm trying to subtract the years and check the user's age. I keep getting 1969 for $user_birth, which I think the raw date can't be parsed.
$raw_birth = "01-19-1980";
$user_birth = date("Y", strtotime($raw_birth));
$today_date = date("Y", time());
echo $raw_birth."<br />".$today_date."<br />".$user_birth."<br />";
echo $today_date-$user_birth;
Any ideas?