Time Based PHP Greetings

This bit of code would directly follow the code from the previous page.

elseif ($m == "PM")
{
if ($hour == 12)
{
echo "Good Afternoon!";
}
elseif ($hour < 7)
{
echo "Good Afternoon!";
}
elseif ($hour > 6)
{
echo "Good Evening!";
}
}
?>

This code checks to see if the $m variable is PM. If it is PM it then checks to see what time it is using our $hour variable. If it is 12 PM (noon) it tells the user "Good Afternoon!". It also says good afternoon if it is any time before 7PM. For times 7PM and later, it tells the user "Good Evening"!