PHP根据出生年月日计算年龄

public function birthday($birthday){
    if (!empty($birthday)){
        list($year,$month,$day)=explode("-", $birthday);
        $year_diff = date("Y") - $year;
        $month_diff = date("m") - $month;
        $day_diff = date("d") - $day;
        if ($day_diff < 0 || $month_diff < 0)
            $year_diff--;
        return $year_diff;
    }
    return 0;
}

传参 $birthday = '1998-04-06'
返回 25

就是这么简单 直接粘贴直接用