I'm wondering how i can check for value not equal to "this" or "this2" or "this3" i'm trying to make a program that will advance the day by one day and if the day is the end of the month (28/29, 30, or 31) then advance the month and reset day to 1.
this is what i have so far, but i'm getting stuck on the multiple != thing
$day = date('d');
$month = date('m');
$year = date('Y');
if ($day >= "30"){
if ($month != "1","3","5","7","9","11")
$advanceMonth = date('m')+1;
}