[函数]时间取星座函数封装

function getXingZuo($datetime)
{
    $date = (int) date('nd', $datetime);
    if ($date) {
        switch ($date) {
            case (120 <= $date && 218 >= $date):
                $xz = "水瓶";
                break;
            case (219 <= $date && 320 >= $date):
                $xz = "双鱼";
                break;
            case (321 <= $date && 419 >= $date):
                $xz = "白羊";
                break;
            case (420 <= $date && 520 >= $date):
                $xz = "金牛";
                break;
            case (521 <= $date && 621 >= $date):
                $xz = "双子";
                break;
            case (622 <= $date && 722 >= $date):
                $xz = "巨蟹";
                break;
            case (723 <= $date && 822 >= $date):
                $xz = "狮子";
                break;
            case (823 <= $date && 922 >= $date):
                $xz = "处女";
                break;
            case (923 <= $date && 1023 >= $date):
                $xz = "天秤";
                break;
            case (1024 <= $date && 1121 >= $date):
                $xz = "天蝎";
                break;
            case (1122 <= $date && 1221 >= $date):
                $xz = "射手";
                break;
            default:
                $xz = "摩羯";
                break;
        }
        return $xz;
    } else {
        return false;
    }
}