获取生日对应星座的PHP函数

$birth = getParam('birth', 'POST');

$str = substr($birth,0,4);//截取年
$month = substr($birth,5,2);//截取月
$day = substr($birth,8,2);//截取日

$year = date('Y',time());//转换年
$age = $year - $str;

/**
* 获取指定日期对应星座
*
* @param integer $month 月份 1-12
* @param integer $day 日期 1-31
* @return boolean|string
*/
function getConstellation($month, $day)
{
$day   = intval($day);
$month = intval($month);
if ($month < 1 || $month > 12 || $day < 1 || $day > 31) return false;
$signs = array(
array('20'=>'宝瓶座'),
array('19'=>'双鱼座'),
array('21'=>'白羊座'),
array('20'=>'金牛座'),
array('21'=>'双子座'),
array('22'=>'巨蟹座'),
array('23'=>'狮子座'),
array('23'=>'处女座'),
array('23'=>'天秤座'),
array('24'=>'天蝎座'),
array('22'=>'射手座'),
array('22'=>'摩羯座')
);
list($start, $name) = each($signs[$month-1]);
if ($day < $start)
list($start, $name) = each($signs[($month-2 < 0) ? 11 : $month-2]);
return $name;
}

$constellation = getConstellation($month, $day);