【PHP】计算星座

封装方法

 
    /**   
    *
    * @desc 计算星座  
    * @param month 月份  
    * @param day 天  
    */ 

    function sys_constellation($month, $day) {
        // 检查参数有效性 
        if ($month < 1 || $month > 12 || $day < 1 || $day > 31) return false;

        // 星座名称以及开始日期
        $constellations = array(
            array( "20" => "水瓶座"),
            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($constellation_start, $constellation_name) = each($constellations[(int)$month-1]);

        if ($day < $constellation_start) list($constellation_start, $constellation_name) = each($constellations[($month -2 < 0) ? $month = 11: $month -= 2]);

        return $constellation_name;

    }