PHP 根據年份獲取生肖

function getShuXiang($bithdayDate){
   //1900年是鼠年
   $data = array('鼠','牛','虎','兔','龍','蛇','馬','羊','猴','雞','狗','豬');
   $index = ($bithdayDate-1900)%12;
   return $data[$index];
}
echo "屬相：".getShuXiang("1989");