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HomeBackend DevelopmentPHP TutorialPHP implements a tool class that can accurately verify ID number

This article mainly introduces PHP tools that can accurately verify ID numbers, involving PHP's interception, calculation, judgment and other related operation skills for strings. It also explains the principle of ID numbers. Friends who need it You can refer to the following example

This article describes the PHP tool class that can accurately verify the ID number. Share it with everyone for your reference, the details are as follows:

<?php
class check_IdCard {
 // $num为身份证号码,$checkSex:1为男,2为女,不输入为不验证
 public function checkIdentity($num, $checkSex = &#39;&#39;) { // 不是15位或不是18位都是无效身份证号
  if (strlen($num) != 15 && strlen($num) != 18) {
   return false;
  }
  // 是数值
  if (is_numeric($num)) {
   // 如果是15位身份证号
   if (strlen($num) == 15) {
    // 省市县(6位)
    $areaNum = substr($num, 0, 6);
    // 出生年月(6位)
    $dateNum = substr($num, 6, 6);
    // 性别(3位)
    $sexNum = substr($num, 12, 3);
   } else {
    // 如果是18位身份证号
    // 省市县(6位)
    $areaNum = substr($num, 0, 6);
    // 出生年月(8位)
    $dateNum = substr($num, 6, 8);
    // 性别(3位)
    $sexNum = substr($num, 14, 3);
    // 校验码(1位)
    $endNum = substr($num, 17, 1);
   }
  } else {
   // 不是数值
   if (strlen($num) == 15) {
    return false;
   } else {
    //验证前17位为数值,且18位为字符x
    $check17 = substr($num, 0, 17);
    if (!is_numeric($check17)) {
     return false;
    }
    //省市县(6位)
    $areaNum = substr($num, 0, 6);
    // 出生年月(8位)
    $dateNum = substr($num, 6, 8);
    // 性别(3位)
    $sexNum = substr($num, 14, 3);
    // 校验码(1位)
    $endNum = substr($num, 17, 1);
    if ($endNum != &#39;x&#39; && $endNum != &#39;X&#39;) {
     return false;
    }
   }
  }
  //验证地区
  if (isset($areaNum)) {
   if (!$this->checkArea($areaNum)) {
    return false;
   }
  }
  //验证日期
  if (isset($dateNum)) {
   if (!$this->checkDate($dateNum)) {
    return false;
   }
  }
  // 性别1为男,2为女
  if ($checkSex == 1) {
   if (isset($sexNum)) {
    if (!$this->checkSex($sexNum)) {
     return false;
    }
   }
  } elseif ($checkSex == 2) {
   if (isset($sexNum)) {
    if ($this->checkSex($sexNum)) {
     return false;
    }
   }
  }
  //验证最后一位
  if (isset($endNum)) {
   if (!$this->checkEnd($endNum, $num)) {
    return false;
   }
  }
  return true;
 }
 // 验证城市
 private function checkArea($area) {
  $num1 = substr($area, 0, 2);
  $num2 = substr($area, 2, 2);
  $num3 = substr($area, 4, 2);
  // 根据GB/T2260—999,省市代码11到65
  if (10 < $num1 && $num1 < 66) {
   return true;
  } else {
   return false;
  }
 }
 // 验证出生日期
 private function checkDate($date) {
  if (strlen($date) == 6) {
   $date1 = substr($date, 0, 2);
   $date2 = substr($date, 2, 2);
   $date3 = substr($date, 4, 2);
   $statusY = $this->checkY(&#39;19&#39; . $date1);
  } else {
   $date1 = substr($date, 0, 4);
   $date2 = substr($date, 4, 2);
   $date3 = substr($date, 6, 2);
   $nowY = date("Y", time());
   if (1900 < $date1 && $date1 <= $nowY) {
    $statusY = $this->checkY($date1);
   } else {
    return false;
   }
  }
  if (0 < $date2 && $date2 < 13) {
   if ($date2 == 2) {
    // 润年
    if ($statusY) {
     if (0 < $date3 && $date3 <= 29) {
      return true;
     } else {
      return false;
     }
    } else {
     // 平年
     if (0 < $date3 && $date3 <= 28) {
      return true;
     } else {
      return false;
     }
    }
   } else {
    $maxDateNum = $this->getDateNum($date2);
    if (0 < $date3 && $date3 <= $maxDateNum) {
     return true;
    } else {
     return false;
    }
   }
  } else {
   return false;
  }
 }
 // 验证性别
 private function checkSex($sex) {
  if ($sex % 2 == 0) {
   return false;
  } else {
   return true;
  }
 }
 // 验证18位身份证最后一位
 private function checkEnd($end, $num) {
  $checkHou = array(1, 0, &#39;x&#39;, 9, 8, 7, 6, 5, 4, 3, 2);
  $checkGu = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
  $sum = 0;
  for ($i = 0;$i < 17;$i++) {
   $sum+= (int)$checkGu[$i] * (int)$num[$i];
  }
  $checkHouParameter = $sum % 11;
  if ($checkHou[$checkHouParameter] != $num[17]) {
   return false;
  } else {
   return true;
  }
 }
 // 验证平年润年,参数年份,返回 true为润年 false为平年
 private function checkY($Y) {
  if (getType($Y) == &#39;string&#39;) {
   $Y = (int)$Y;
  }
  if ($Y % 100 == 0) {
   if ($Y % 400 == 0) {
    return true;
   } else {
    return false;
   }
  } else if ($Y % 4 == 0) {
   return true;
  } else {
   return false;
  }
 }
 // 当月天数 参数月份(不包括2月) 返回天数
 private function getDateNum($month) {
  if ($month == 1 || $month == 3 || $month == 5 || $month == 7 || $month == 8 || $month == 10 || $month == 12) {
   return 31;
  } else if ($month == 2) {
  } else {
   return 30;
  }
 }
}
// 测试
header("content-type:text/html;charset=utf-8");
$num = &#39;230106199202099035&#39;; //此号码为随机生成
$test = new check_IdCard();
$data = $test->checkIdentity($num);
var_dump($data);
//=============新的18位身份证号码各位的含义:=======================
//1-2位省、自治区、直辖市代码;11-65
//3-4位地级市、盟、自治州代码;
//5-6位县、县级市、区代码;
//7-14位出生年月日,比如19670401代表1967年4月1日;
//15-17位为顺序号,其中17位男为单数,女为双数;
//18位为校验码,0-9和X,由公式随机产生。
//举例:
//130503 19670401 0012这个身份证号的含义: 13为河北,05为邢台,03为桥西区,出生日期为1967年4月1日,顺序号为001,2为验证码
//===========15位身份证号码各位的含义:=======================
//1-2位省、自治区、直辖市代码;
//3-4位地级市、盟、自治州代码;
//5-6位县、县级市、区代码;
//7-12位出生年月日,比如670401代表1967年4月1日,这是和18位号码的第一个区别;
//13-15位为顺序号,其中15位男为单数,女为双数;
//与18位身份证号的第二个区别:没有最后一位的验证码。
//举例:
//130503 670401 001的含义; 13为河北,05为邢台,03为桥西区,出生日期为1967年4月1日,顺序号为001。

Running results:

bool(true)

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