Working With Dates

[vicodin]

Hello all i am trying to compare dates and find out if the person signed up this month or before this month. So i came up with this and it works but was wondering if there was a better way to do it.

 

$signup = "2008-10-09";//<-- What ever date is pulled from DB
$date = date("Y/m");
$date.= "/01";
$date = strtotime($date);
$signup = strtotime($signup);
if ($signup > $date){
echo 'Signed Up This Month';
} else {
echo ' Signed Up Before';
}