Two functions for detecting ID number in PHP_PHP tutorial

We introduced here that the ID number must be a simple one and cannot determine whether the ID number is legal or exists. It only needs to meet some standards. Let’s look at two examples below.

The most accurate way to detect the ID number is definitely through the national identity data center. Think about it, this thing is not so easy to get, so here is a way to detect it through the first 17 digits and go directly to the Example:

The code is as follows

代码如下	复制代码
$idCard = '12345678901234567';//身份证号码前17位 $wi = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2); $ai = array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'); $sigma = null; for ($i = 0; $i < 17; $i++) { $sigma += ((int) $idCard{$i}) * $wi[$i]; } echo "身份证号码：".$idCard.$ai[($sigma % 11)]; ?>

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代码如下

复制代码

function validation_filter_id_card($id_card) { if(strlen($id_card) == 18) { return idcard_checksum18($id_card); } elseif((strlen($id_card) == 15)) { $id_card = idcard_15to18($id_card); return idcard_checksum18($id_card); } else { return false; } } // 计算身份证校验码，根据国家标准GB 11643-1999 function idcard_verify_number($idcard_base) { if(strlen($idcard_base) != 17) { return false; } //加权因子 $factor = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2); //校验码对应值 $verify_number_list = array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'); $checksum = 0; for ($i = 0; $i < strlen($idcard_base); $i++) { $checksum += substr($idcard_base, $i, 1) * $factor[$i]; } $mod = $checksum % 11; $verify_number = $verify_number_list[$mod]; return $verify_number; } // 将15位身份证升级到18位 function idcard_15to18($idcard){ if (strlen($idcard) != 15){ return false; }else{ // 如果身份证顺序码是996 997 998 999，这些是为百岁以上老人的特殊编码 if (array_search(substr($idcard, 12, 3), array('996', '997', '998', '999')) !== false){ $idcard = substr($idcard, 0, 6) . '18'. substr($idcard, 6, 9); }else{ $idcard = substr($idcard, 0, 6) . '19'. substr($idcard, 6, 9); } } $idcard = $idcard . idcard_verify_number($idcard); return $idcard; } // 18位身份证校验码有效性检查 function idcard_checksum18($idcard){ if (strlen($idcard) != 18){ return false; } $idcard_base = substr($idcard, 0, 17); if (idcard_verify_number($idcard_base) != strtoupper(substr($idcard, 17, 1))){ return false; }else{ return true; } }

$idCard = '12345678901234567';//The first 17 digits of the ID number
$wi = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
$ai = array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
$sigma = null;
for ($i = 0; $i < 17; $i++) {
$sigma += ((int) $idCard{$i}) * $wi[$i];
}
echo "ID card number:".$idCard.$ai[($sigma % 11)];
?>

Example 2

The code is as follows

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function validation_filter_id_card($id_card) { if(strlen($id_card) == 18) { return idcard_checksum18($id_card); } elseif((strlen($id_card) == 15)) { $id_card = idcard_15to18($id_card); return idcard_checksum18($id_card); } else { return false; } } // Calculate ID card verification code according to national standard GB 11643-1999 function idcard_verify_number($idcard_base) { if(strlen($idcard_base) != 17) { return false; } //Weighting factor $factor = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2); //Corresponding value of check code $verify_number_list = array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'); $checksum = 0; for ($i = 0; $i < strlen($idcard_base); $i++) { $checksum += substr($idcard_base, $i, 1) * $factor[$i]; } $mod = $checksum % 11; $verify_number = $verify_number_list[$mod]; return $verify_number; } // Upgrade the 15-digit ID card to 18 digits function idcard_15to18($idcard){ if (strlen($idcard) != 15){ return false; }else{ // If the ID card sequence code is 996 997 998 999, these are special codes for people over 100 years old if (array_search(substr($idcard, 12, 3), array('996', '997', '998', '999')) !== false){ $idcard = substr($idcard, 0, 6) . '18'. substr($idcard, 6, 9); }else{ $idcard = substr($idcard, 0, 6) . '19'. substr($idcard, 6, 9); } } $idcard = $idcard . idcard_verify_number($idcard); return $idcard; } // Validity check of 18-digit ID card verification code function idcard_checksum18($idcard){ if (strlen($idcard) != 18){ return false; } $idcard_base = substr($idcard, 0, 17); if (idcard_verify_number($idcard_base) != strtoupper(substr($idcard, 17, 1))){ return false; }else{ return true; } } http://www.bkjia.com/PHPjc/632756.html www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/632756.htmlTechArticleWe introduced here that the ID number is definitely a simple one and cannot determine whether the ID number is legal or exists. Yes, it just needs to meet some standards. Let’s look at two examples...