1 $year = 2014;
 2         $month = 4;
 3         $day = 22;
 4         $month_day = 0;
 5         $total = 0;
 6         $temp = 0;
 7         $isRN = false;
 8         if($year % 4 == 0 && $year %100 != 0 || $year % 400 == 0){
 9             $isRN = true;
10         }
11         for($i = 1;$i <= 12;$i++){
12             switch($i){
13                 case 1:
14                 case 3:
15                 case 5:
16                 case 7:
17                 case 8:
18                 case 10:
19                 case 12:
20                     $month_day = 31;
21                     break;
22                 case 2:
23                     if($isRN){
24                         $month_day = 29;
25                     }else{
26                         $month_day = 28;
27                     }
28                     break;
29                 default:
30                     $month_day = 30;
31                     break;
32 
33             }
34             if($i < $month){
35                 $total += $month_day;
36             }else{
37                 $temp += $month_day;
38             }
39         }
40         $total = $total + $day;
41         echo $year."年过了".$total."天!<br/>";
42         $temp = $temp-$day;
43         echo "离2015年还有".$temp."天！";