hello
Name and Number of seasons:
string = array('winter','spring','summer','fall')[(int)($month/3.1)];
integer = (int)($month/3.1)+1;
example:
2014/05/05
$year=2014;
$month=05;
$day=05;
$int = (int)($month/3.1)+1; // 3
$str = array('winter','spring','summer','fall')[(int)($month/3.1)]; // 'summer'