<html> <head> </head> <body> <form action="rnjs.php" method="get"> <input type="text" name="num1"> <input type="submit" value="润年查询器" /> </form> </body> </html> <?php $num1 = $_POST['num1']; if(!is_numeric($num1) || $num1<0){ echo '不是一个数值类型或者小于0，请输入正确的年数！'; }elseif($num1%400 || $num1%4 && !$num1%100){ echo '平年'; }else{ echo '今年是润年哦！'; } ?>
2018-02-080个赞
