使用php从身份证号中获取一系列线索（星座、生肖、生日等）

<?php

function get_xingzuo($cid) { // 根据身份证号，自动返回对应的星座
  if (!isidcard($cid)) return '';
  $bir = substr($cid,10,4);
  $month = (int)substr($bir,0,2);
  $day = (int)substr($bir,2);
  $strvalue = '';
  if (($month == 1 && $day >= 20) || ($month == 2 && $day <= 18)) {
    $strvalue = "水瓶座";
  } else if (($month == 2 && $day >= 19) || ($month == 3 && $day <= 20)) {
    $strvalue = "双鱼座";
  } else if (($month == 3 && $day > 20) || ($month == 4 && $day <= 19)) {
    $strvalue = "白羊座";
  } else if (($month == 4 && $day >= 20) || ($month == 5 && $day <= 20)) {
    $strvalue = "金牛座";
  } else if (($month == 5 && $day >= 21) || ($month == 6 && $day <= 21)) {
    $strvalue = "双子座";
  } else if (($month == 6 && $day > 21) || ($month == 7 && $day <= 22)) {
    $strvalue = "巨蟹座";
  } else if (($month == 7 && $day > 22) || ($month == 8 && $day <= 22)) {
    $strvalue = "狮子座";
  } else if (($month == 8 && $day >= 23) || ($month == 9 && $day <= 22)) {
    $strvalue = "处女座";
  } else if (($month == 9 && $day >= 23) || ($month == 10 && $day <= 23)) {
    $strvalue = "天秤座";
  } else if (($month == 10 && $day > 23) || ($month == 11 && $day <= 22)) {
    $strvalue = "天蝎座";
  } else if (($month == 11 && $day > 22) || ($month == 12 && $day <= 21)) {
    $strvalue = "射手座";
  } else if (($month == 12 && $day > 21) || ($month == 1 && $day <= 19)) {
    $strvalue = "魔羯座";
  }
  return $strvalue;
   
}
function get_shengxiao($cid) { //根据身份证号，自动返回对应的生肖
  if (!isidcard($cid)) return '';
  $start = 1901;
  $end = $end = (int)substr($cid,6,4);
  $x = ($start - $end) % 12;
  $value = "";    
  if ($x == 1 || $x == -11) {$value = "鼠";}
  if ($x == 0) { $value = "牛";}
  if ($x == 11 || $x == -1) {$value = "虎";}
  if ($x == 10 || $x == -2) {$value = "兔";}
  if ($x == 9 || $x == -3) {$value = "龙";}
  if ($x == 8 || $x == -4) {$value = "蛇";}
  if ($x == 7 || $x == -5) {$value = "马";}
  if ($x == 6 || $x == -6) {$value = "羊";}
  if ($x == 5 || $x == -7) {$value = "猴";}
  if ($x == 4 || $x == -8) {$value = "鸡";}
  if ($x == 3 || $x == -9) {$value = "狗";}
  if ($x == 2 || $x == -10) {$value = "猪";}
  return $value;
}
function get_xingbie($cid) { //根据身份证号，自动返回性别
  if (!isidcard($cid)) return '';
  $sexint = (int)substr($cid,16,1);
   
  return $sexint % 2 === 0 ? '女' : '男';
}
function isidcard($number) { // 检查是否是身份证号
  // 转化为大写，如出现x
  $number = strtoupper($number);
  //加权因子 
  $wi = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
  //校验码串 
  $ai = array('1', '0', 'x', '9', '8', '7', '6', '5', '4', '3', '2');
  //按顺序循环处理前17位 
  $sigma = 0;
  for ($i = 0;$i < 17;$i++) { 
    //提取前17位的其中一位，并将变量类型转为实数 
    $b = (int) $number{$i}; 
 
    //提取相应的加权因子 
    $w = $wi[$i];
 
    //把从身份证号码中提取的一位数字和加权因子相乘，并累加
    $sigma += $b * $w; 
  }
  //计算序号 
  $snumber = $sigma % 11; 
 
  //按照序号从校验码串中提取相应的字符。 
  $check_number = $ai[$snumber];
 
  if ($number{17} == $check_number) {
    return true;
  } else {
    return false;
  }
}
?>

function getidcardinfo($idcard,$format=1){ 
 $result['error']=0;//0：未知错误，1：身份证格式错误，2：无错误 
 $result['flag']='';//0标示成年，1标示未成年 
 $result['tdate']='';//生日，格式如：2012-11-15 
 if(!preg_match("/^(\d{15}$|^\d{18}$|^\d{17}(\d|x|x))$/",$idcard)){ 
 $result['error']=1; 
 return $result; 
 }else{ 
 if(strlen($idcard)==18)
 { 
  $tyear=intval(substr($idcard,6,4)); 
  $tmonth=intval(substr($idcard,10,2)); 
  $tday=intval(substr($idcard,12,2)); 
 }
 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)
  { 
  $flag=0; 
  }else
  { 
  if($format)
  {
   $tdate=$tyear."-".$tmonth."-".$tday; 
  }
  else
  {
   $tdate=$tmonth."-".$tday; 
  }
   
  if((time()-mktime(0,0,0,$tmonth,$tday,$tyear))>18*365*24*60*60)
  { 
   $flag=0; 
  }
  else
  { 
   $flag=1; 
  } 
  } 
 } 
 $result['error']=2;//0：未知错误，1：身份证格式错误，2：无错误 
 $result['isadult']=$flag;//0标示成年，1标示未成年 
 $result['birthday']=$tdate;//生日日期 
 return $result; 
}

<?php
//用php从身份证中提取生日,包括位和位身份证
function getidcardinfo($idcard){
 $result['error']=;//：未知错误，：身份证格式错误，：无错误
 $result['flag']='';//标示成年，标示未成年
 $result['tdate']='';//生日，格式如：--
 if(!eregi("^[-]([-a-za-z]{}|[-a-za-z]{})$",$idcard)){
  $result['error']=;
  return $result;
 }else{
  if(strlen($idcard)==){
   $tyear=intval(substr($idcard,,));
   $tmonth=intval(substr($idcard,,));
   $tday=intval(substr($idcard,,));
   if($tyear>date("y")||$tyear<(date("y")-)){
    $flag=;
   }elseif($tmonth<||$tmonth>){
    $flag=;
   }elseif($tday<||$tday>){
    $flag=;
   }else{
    $tdate=$tyear."-".$tmonth."-".$tday." ::";
    if((time()-mktime(,,,$tmonth,$tday,$tyear))>****){
     $flag=;
    }else{
     $flag=;
    }
   }
  }elseif(strlen($idcard)==){
   $tyear=intval("".substr($idcard,,));
   $tmonth=intval(substr($idcard,,));
   $tday=intval(substr($idcard,,));
   if($tyear>date("y")||$tyear<(date("y")-)){
    $flag=;
   }elseif($tmonth<||$tmonth>){
    $flag=;
   }elseif($tday<||$tday>){
    $flag=;
   }else{
    $tdate=$tyear."-".$tmonth."-".$tday." ::";
    if((time()-mktime(,,,$tmonth,$tday,$tyear))>****){
     $flag=;
    }else{
     $flag=;
    }
   }
  }
 }
 $result['error']=;//：未知错误，：身份证格式错误，：无错误
 $result['isadult']=$flag;//标示成年，标示未成年
 $result['birthday']=$tdate;//生日日期
 return $result;
}