IT基地

根据身份证号验证用户是否成年

/**
 * 是否成年
 * @param $IDCard
 * @return int 0 成年，1未成年
 */
private function is_adult($IDCard){
    $flag = 0;
    if(strlen($IDCard)==18){
        $tyear=intval(substr($IDCard,6,4));
        $tmonth=intval(substr($IDCard,10,2));
        $tday=intval(substr($IDCard,12,2));
        if($tyear>date("Y")||$tyear<(date("Y")-100)){
            $flag=0;
        }elseif($tmonth<0||$tmonth>12){
            $flag=0;
        }elseif($tday<0||$tday>31){
            $flag=0;
        }else{
            $day_sum = self::full_year_day($tyear,$tmonth,18);
            if((time()-mktime(0,0,0,$tmonth,$tday,$tyear))>$day_sum*24*60*60){
                $flag=0;
            }else{
                $flag=1;
            }
        }
    }elseif(strlen($IDCard)==15){
        $tyear=intval("19".substr($IDCard,6,2));
        $tmonth=intval(substr($IDCard,8,2));
        $tday=intval(substr($IDCard,10,2));
        if($tyear>date("Y")||$tyear<(date("Y")-100)){
            $flag=0;
        }elseif($tmonth<0||$tmonth>12){
            $flag=0;
        }elseif($tday<0||$tday>31){
            $flag=0;
        }else{
            $day_sum = self::full_year_day($tyear,$tmonth,18);
            if((time()-mktime(0,0,0,$tmonth,$tday,$tyear))>$day_sum*24*60*60){
                $flag=0;
            }else{
                $flag=1;
            }
        }
    }
    return $flag;
}
/**
 * n周岁的天数
 * @param $tyear
 * @param $tmonth
 * @return int
 */
private function full_year_day($tyear,$tmonth,$type=18){
    $sum=365*$type;
    for($i=$tyear+1;$i<$tyear+$type;$i++)//考虑中间年份
    {
        if(self::is_leap_year($i))
            $sum++;
    }
    if(self::is_leap_year($tyear)&&$tmonth<=2)//考虑初末两年
        $sum++;
    if(self::is_leap_year($tyear+$type)&&$tmonth>=3){
        $sum++;
    }
    return $sum;
}
/**
 * @param $year
 * @return int 1是闰年，0不是闰年
 */
private function is_leap_year($year){
    if(($year%4==0&&$year%100!=0)||$year%400==0)
        return 1;
    else
        return 0;
}