RT.....
if($year%4==0 && ($year%100!=0 || $year%400==0)){ echo '是闰年'; }else{ echo "不是闰年"; } date('L')?'是闰年':‘不是闰年’;
$year=date('L');
$year?'是闰年':'不是闰年';
$year=date('Y');
if($year%==4 && ($year%100!=0 || $year%400==0))
{echo '闰年';}else{echo '不是闰年';}