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您如何根据号码检测信用卡类型?

我试图弄清楚如何根据其数量来检测信用卡的类型。有谁知道一个明确,可靠的方法来找到这个?

490
Andrew Edvalson

信用卡/借记卡号码称为PAN主帐号。 PAN的前六位取自属于发行银行的IIN发行人识别码(IIN以前称为BIN - Bank识别号码 - 因此您可能会在某些文档中看到对该术语的引用。这六个数字符合国际标准 ISO/IEC 7812 ,可用于从数字中确定卡的类型。

不幸的是,实际的ISO/IEC 7812数据库不公开,但是,有非商业和免费的非官方列表,包括 维基百科

无论如何,要从数字中检测类型,您可以使用如下所示的正则表达式: 原始表达式的信用

Visa:^4[0-9]{6,}$ Visa卡号码以4开头。

MasterCard:^5[1-5][0-9]{5,}|222[1-9][0-9]{3,}|22[3-9][0-9]{4,}|2[3-6][0-9]{5,}|27[01][0-9]{4,}|2720[0-9]{3,}$ 2016年之前,万事达卡号码以数字51到55开头,但这只会检测万事达信用卡;使用万事达卡系统发行的其他卡不属于此IIN范围。 2016年,他们将增加该范围内的数字(222100-272099)。

American Express:^3[47][0-9]{5,}$美国运通卡号以34或37开头。

Diners Club:^3(?:0[0-5]|[68][0-9])[0-9]{4,}$大莱卡号码以300至305,36或38开头。有大莱卡以5开头,有16位数字。这些是大莱卡和万事达卡之间的合资企业,应该像万事达卡一样处理。

Discover:^6(?:011|5[0-9]{2})[0-9]{3,}$发现卡号以6011或65开头。

JCB:^(?:2131|1800|35[0-9]{3})[0-9]{3,}$ JCB卡以2131,1800或35开头。

不幸的是,使用万事达卡系统处理的卡类型很多,并不存在于万事达卡的IIN范围内(数字从51 ... 55开始);最重要的情况是Maestro卡,其中许多是从其他银行的IIN范围发行的,所以它们遍布数字空间。因此,最好假设您接受的任何其他类型的卡必须是万事达卡

重要:卡号的长度各不相同;例如,Visa过去发行了13位数的PAN卡和16位数的PAN卡。 Visa的文件目前表明它可能会发行或者可能发出12到19位数字。 因此,你不应该检查卡号的长度,除了验证它至少有7位(对于一个完整的IIN加一个校验位,它应该与 Luhn算法预测的值相匹配) )。

还有一个提示:在处理持卡人PAN之前,从输入中删除任何空格和标点字符。为什么?因为它通常很多更容易输入组中的数字,类似于它们在实际信用卡的正面显示的方式,即.

4444 4444 4444 4444

比正确输入要容易得多

4444444444444444

惩罚用户真的没有任何好处,因为他们输入了你没想到的字符。

这也意味着确保您的输入字段有至少 24个字符的空间,否则输入空格的用户将用完房间。我建议你让字段宽到足以显示32个字符,最多允许64个字符;这为扩展提供了充足的空间。

这是一个提供更多洞察力的图像:

UPDATE(2014):校验和方法似乎不再是验证卡片真实性的有效方法,如本答案的评论中所述。

UPDATE(2016):万事达卡将实施新的BIN范围 Ach Payment

Credit Card Verification

718
senfo

在javascript中:

function detectCardType(number) {
    var re = {
        electron: /^(4026|417500|4405|4508|4844|4913|4917)\d+$/,
        maestro: /^(5018|5020|5038|5612|5893|6304|6759|6761|6762|6763|0604|6390)\d+$/,
        dankort: /^(5019)\d+$/,
        interpayment: /^(636)\d+$/,
        unionpay: /^(62|88)\d+$/,
        visa: /^4[0-9]{12}(?:[0-9]{3})?$/,
        mastercard: /^5[1-5][0-9]{14}$/,
        amex: /^3[47][0-9]{13}$/,
        diners: /^3(?:0[0-5]|[68][0-9])[0-9]{11}$/,
        discover: /^6(?:011|5[0-9]{2})[0-9]{12}$/,
        jcb: /^(?:2131|1800|35\d{3})\d{11}$/
    }

    for(var key in re) {
        if(re[key].test(number)) {
            return key
        }
    }
}

单元测试:

describe('CreditCard', function() {
    describe('#detectCardType', function() {

        var cards = {
            '8800000000000000': 'UNIONPAY',

            '4026000000000000': 'ELECTRON',
            '4175000000000000': 'ELECTRON',
            '4405000000000000': 'ELECTRON',
            '4508000000000000': 'ELECTRON',
            '4844000000000000': 'ELECTRON',
            '4913000000000000': 'ELECTRON',
            '4917000000000000': 'ELECTRON',

            '5019000000000000': 'DANKORT',

            '5018000000000000': 'MAESTRO',
            '5020000000000000': 'MAESTRO',
            '5038000000000000': 'MAESTRO',
            '5612000000000000': 'MAESTRO',
            '5893000000000000': 'MAESTRO',
            '6304000000000000': 'MAESTRO',
            '6759000000000000': 'MAESTRO',
            '6761000000000000': 'MAESTRO',
            '6762000000000000': 'MAESTRO',
            '6763000000000000': 'MAESTRO',
            '0604000000000000': 'MAESTRO',
            '6390000000000000': 'MAESTRO',

            '3528000000000000': 'JCB',
            '3589000000000000': 'JCB',
            '3529000000000000': 'JCB',

            '6360000000000000': 'INTERPAYMENT',

            '4916338506082832': 'VISA',
            '4556015886206505': 'VISA',
            '4539048040151731': 'VISA',
            '4024007198964305': 'VISA',
            '4716175187624512': 'VISA',

            '5280934283171080': 'MASTERCARD',
            '5456060454627409': 'MASTERCARD',
            '5331113404316994': 'MASTERCARD',
            '5259474113320034': 'MASTERCARD',
            '5442179619690834': 'MASTERCARD',

            '6011894492395579': 'DISCOVER',
            '6011388644154687': 'DISCOVER',
            '6011880085013612': 'DISCOVER',
            '6011652795433988': 'DISCOVER',
            '6011375973328347': 'DISCOVER',

            '345936346788903': 'AMEX',
            '377669501013152': 'AMEX',
            '373083634595479': 'AMEX',
            '370710819865268': 'AMEX',
            '371095063560404': 'AMEX'
        };

        Object.keys(cards).forEach(function(number) {
            it('should detect card ' + number + ' as ' + cards[number], function() {
                Basket.detectCardType(number).should.equal(cards[number]);
            });
        });
    });
});
68
Anatoliy

更新时间:2016年6月15日 (目前作为最终解决方案)

请注意,我甚至投票支持最高投票,但为了明确这些正在实际工作的regexp我用数千个真正的BIN代码测试它。 最重要的是使用起始字符串(^)否则会在现实世界中给出错误的结果!

_ jcb _ ^(?:2131|1800|35)[0-9]{0,}$开头: 2131,1800,35(3528-3589)

American Express ^3[47][0-9]{0,}$开头: 34,37

大来俱乐部 ^3(?:0[0-59]{1}|[689])[0-9]{0,}$开头: 300-305,309,36,38-39

签证 ^4[0-9]{0,}$开头: 4

MasterCard ^(5[1-5]|222[1-9]|22[3-9]|2[3-6]|27[01]|2720)[0-9]{0,}$开头: 2221-2720,51-55

Maestro ^(5[06789]|6)[0-9]{0,}$ Maestro总是在以下范围内增长: 60-69 ,以/不是其他东西开始,但无论如何必须将起始5编码为主卡。必须在代码末尾检测到Maestro卡,因为其他一些卡的范围为60-69。请看代码。

发现 ^(6011|65|64[4-9]|62212[6-9]|6221[3-9]|622[2-8]|6229[01]|62292[0-5])[0-9]{0,}$发现很难编码,开始于: 6011,622126-622925,644-649,65

javascript 我使用这个功能。当你将它分配给onkeyup事件并且它尽快给出结果时这很好。

function cc_brand_id(cur_val) {
  // the regular expressions check for possible matches as you type, hence the OR operators based on the number of chars
  // regexp string length {0} provided for soonest detection of beginning of the card numbers this way it could be used for BIN CODE detection also

  //JCB
  jcb_regex = new RegExp('^(?:2131|1800|35)[0-9]{0,}$'); //2131, 1800, 35 (3528-3589)
  // American Express
  amex_regex = new RegExp('^3[47][0-9]{0,}$'); //34, 37
  // Diners Club
  diners_regex = new RegExp('^3(?:0[0-59]{1}|[689])[0-9]{0,}$'); //300-305, 309, 36, 38-39
  // Visa
  visa_regex = new RegExp('^4[0-9]{0,}$'); //4
  // MasterCard
  mastercard_regex = new RegExp('^(5[1-5]|222[1-9]|22[3-9]|2[3-6]|27[01]|2720)[0-9]{0,}$'); //2221-2720, 51-55
  maestro_regex = new RegExp('^(5[06789]|6)[0-9]{0,}$'); //always growing in the range: 60-69, started with / not something else, but starting 5 must be encoded as mastercard anyway
  //Discover
  discover_regex = new RegExp('^(6011|65|64[4-9]|62212[6-9]|6221[3-9]|622[2-8]|6229[01]|62292[0-5])[0-9]{0,}$');
  ////6011, 622126-622925, 644-649, 65


  // get rid of anything but numbers
  cur_val = cur_val.replace(/\D/g, '');

  // checks per each, as their could be multiple hits
  //fix: ordering matter in detection, otherwise can give false results in rare cases
  var sel_brand = "unknown";
  if (cur_val.match(jcb_regex)) {
    sel_brand = "jcb";
  } else if (cur_val.match(amex_regex)) {
    sel_brand = "amex";
  } else if (cur_val.match(diners_regex)) {
    sel_brand = "diners_club";
  } else if (cur_val.match(visa_regex)) {
    sel_brand = "visa";
  } else if (cur_val.match(mastercard_regex)) {
    sel_brand = "mastercard";
  } else if (cur_val.match(discover_regex)) {
    sel_brand = "discover";
  } else if (cur_val.match(maestro_regex)) {
    if (cur_val[0] == '5') { //started 5 must be mastercard
      sel_brand = "mastercard";
    } else {
      sel_brand = "maestro"; //maestro is all 60-69 which is not something else, thats why this condition in the end
    }
  }

  return sel_brand;
}

在这里你可以玩它:

http://jsfiddle.net/upN3L/69/

对于PHP使用此函数,这也检测到一些子VISA/MC卡:

    /**
 * Obtain a brand constant from a PAN 
 *
 * @param type $pan               Credit card number
 * @param type $include_sub_types Include detection of sub visa brands
 * @return string
 */
public static function getCardBrand($pan, $include_sub_types = false)
{
    //maximum length is not fixed now, there are growing number of CCs has more numbers in length, limiting can give false negatives atm

    //these regexps accept not whole cc numbers too
    //visa        
    $visa_regex = "/^4[0-9]{0,}$/";
    $vpreca_regex = "/^428485[0-9]{0,}$/";
    $postepay_regex = "/^(402360|402361|403035|417631|529948){0,}$/";
    $cartasi_regex = "/^(432917|432930|453998)[0-9]{0,}$/";
    $entropay_regex = "/^(406742|410162|431380|459061|533844|522093)[0-9]{0,}$/";
    $o2money_regex = "/^(422793|475743)[0-9]{0,}$/";

    // MasterCard
    $mastercard_regex = "/^(5[1-5]|222[1-9]|22[3-9]|2[3-6]|27[01]|2720)[0-9]{0,}$/";
    $maestro_regex = "/^(5[06789]|6)[0-9]{0,}$/"; 
    $kukuruza_regex = "/^525477[0-9]{0,}$/";
    $yunacard_regex = "/^541275[0-9]{0,}$/";

    // American Express
    $amex_regex = "/^3[47][0-9]{0,}$/";

    // Diners Club
    $diners_regex = "/^3(?:0[0-59]{1}|[689])[0-9]{0,}$/";

    //Discover
    $discover_regex = "/^(6011|65|64[4-9]|62212[6-9]|6221[3-9]|622[2-8]|6229[01]|62292[0-5])[0-9]{0,}$/";

    //JCB
    $jcb_regex = "/^(?:2131|1800|35)[0-9]{0,}$/";

    //ordering matter in detection, otherwise can give false results in rare cases
    if (preg_match($jcb_regex, $pan)) {
        return "jcb";
    }

    if (preg_match($amex_regex, $pan)) {
        return "amex";
    }

    if (preg_match($diners_regex, $pan)) {
        return "diners_club";
    }

    //sub visa/mastercard cards
    if ($include_sub_types) {
        if (preg_match($vpreca_regex, $pan)) {
            return "v-preca";
        }
        if (preg_match($postepay_regex, $pan)) {
            return "postepay";
        }
        if (preg_match($cartasi_regex, $pan)) {
            return "cartasi";
        }
        if (preg_match($entropay_regex, $pan)) {
            return "entropay";
        }
        if (preg_match($o2money_regex, $pan)) {
            return "o2money";
        }
        if (preg_match($kukuruza_regex, $pan)) {
            return "kukuruza";
        }
        if (preg_match($yunacard_regex, $pan)) {
            return "yunacard";
        }
    }

    if (preg_match($visa_regex, $pan)) {
        return "visa";
    }

    if (preg_match($mastercard_regex, $pan)) {
        return "mastercard";
    }

    if (preg_match($discover_regex, $pan)) {
        return "discover";
    }

    if (preg_match($maestro_regex, $pan)) {
        if ($pan[0] == '5') {//started 5 must be mastercard
            return "mastercard";
        }
            return "maestro"; //maestro is all 60-69 which is not something else, thats why this condition in the end

    }

    return "unknown"; //unknown for this system
}
31
Janos Szabo
  public string GetCreditCardType(string CreditCardNumber)
    {
        Regex regVisa = new Regex("^4[0-9]{12}(?:[0-9]{3})?$");
        Regex regMaster = new Regex("^5[1-5][0-9]{14}$");
        Regex regExpress = new Regex("^3[47][0-9]{13}$");
        Regex regDiners = new Regex("^3(?:0[0-5]|[68][0-9])[0-9]{11}$");
        Regex regDiscover = new Regex("^6(?:011|5[0-9]{2})[0-9]{12}$");
        Regex regJCB= new Regex("^(?:2131|1800|35\\d{3})\\d{11}$");


        if(regVisa.IsMatch(CreditCardNumber))
            return "VISA";
       else if (regMaster.IsMatch(CreditCardNumber))
            return "MASTER";
      else  if (regExpress.IsMatch(CreditCardNumber))
            return "AEXPRESS";
       else if (regDiners.IsMatch(CreditCardNumber))
            return "DINERS";
       else if (regDiscover.IsMatch(CreditCardNumber))
            return "DISCOVERS";
       else   if (regJCB.IsMatch(CreditCardNumber))
            return "JCB";
       else
        return "invalid";
    }

以下是使用Regex检查信用卡类型的功能,c#

19
Usman Younas

看一下这个:

http://www.breakingpar.com/bkp/home.nsf/0/87256B280015193F87256CC70060A01B

function isValidCreditCard(type, ccnum) {
/* Visa: length 16, prefix 4, dashes optional.
Mastercard: length 16, prefix 51-55, dashes optional.
Discover: length 16, prefix 6011, dashes optional.
American Express: length 15, prefix 34 or 37.
Diners: length 14, prefix 30, 36, or 38. */

  var re = new Regex({ "visa": "/^4\d{3}-?\d{4}-?\d{4}-?\d",
                       "mc": "/^5[1-5]\d{2}-?\d{4}-?\d{4}-?\d{4}$/",
                       "disc": "/^6011-?\d{4}-?\d{4}-?\d{4}$/",
                       "amex": "/^3[47]\d{13}$/",
                       "diners": "/^3[068]\d{12}$/"}[type.toLowerCase()])

   if (!re.test(ccnum)) return false;
   // Remove all dashes for the checksum checks to eliminate negative numbers
   ccnum = ccnum.split("-").join("");
   // Checksum ("Mod 10")
   // Add even digits in even length strings or odd digits in odd length strings.
   var checksum = 0;
   for (var i=(2-(ccnum.length % 2)); i<=ccnum.length; i+=2) {
      checksum += parseInt(ccnum.charAt(i-1));
   }
   // Analyze odd digits in even length strings or even digits in odd length strings.
   for (var i=(ccnum.length % 2) + 1; i<ccnum.length; i+=2) {
      var digit = parseInt(ccnum.charAt(i-1)) * 2;
      if (digit < 10) { checksum += digit; } else { checksum += (digit-9); }
   }
   if ((checksum % 10) == 0) return true; else return false;
}
18
Rashy

这是 完成C#或VB代码,用于各种与CC相关的事情 on codeproject。

  • IsValidNumber
  • GetCardTypeFromNumber
  • GetCardTestNumber
  • PassesLuhnTest

这篇文章已经发表了几年没有负面评论。

12
Simon_Weaver

最近我需要这样的功能,我正在将Zend Framework信用卡验证器移植到Ruby。 Ruby gem: https://github.com/Fivell/credit_card_validations zend framework: https://github.com/zendframework/zf2/blob/master/library/Zend/Validator/CreditCard.php

他们都使用INN范围来检测类型。在这里你可以阅读 关于INN

根据这个你可以检测信用卡(没有正则表达式,但声明一些关于前缀和可能的长度的规则)

所以我们对大多数使用的卡都有下一个规则

########  most used brands #########

    visa: [
        {length: [13, 16], prefixes: ['4']}
    ],
    mastercard: [
        {length: [16], prefixes: ['51', '52', '53', '54', '55']}
    ],

    amex: [
        {length: [15], prefixes: ['34', '37']}
    ],
    ######## other brands ########
    diners: [
        {length: [14], prefixes: ['300', '301', '302', '303', '304', '305', '36', '38']},
    ],

    #There are Diners Club (North America) cards that begin with 5. These are a joint venture between Diners Club and MasterCard, and are processed like a MasterCard
    # will be removed in next major version

    diners_us: [
        {length: [16], prefixes: ['54', '55']}
    ],

    discover: [
        {length: [16], prefixes: ['6011', '644', '645', '646', '647', '648',
                                  '649', '65']}
    ],

    jcb: [
        {length: [16], prefixes: ['3528', '3529', '353', '354', '355', '356', '357', '358', '1800', '2131']}
    ],


    laser: [
        {length: [16, 17, 18, 19], prefixes: ['6304', '6706', '6771']}
    ],

    solo: [
        {length: [16, 18, 19], prefixes: ['6334', '6767']}
    ],

    switch: [
        {length: [16, 18, 19], prefixes: ['633110', '633312', '633304', '633303', '633301', '633300']}

    ],

    maestro: [
        {length: [12, 13, 14, 15, 16, 17, 18, 19], prefixes: ['5010', '5011', '5012', '5013', '5014', '5015', '5016', '5017', '5018',
                                                              '502', '503', '504', '505', '506', '507', '508',
                                                              '6012', '6013', '6014', '6015', '6016', '6017', '6018', '6019',
                                                              '602', '603', '604', '605', '6060',
                                                              '677', '675', '674', '673', '672', '671', '670',
                                                              '6760', '6761', '6762', '6763', '6764', '6765', '6766', '6768', '6769']}
    ],

    # Luhn validation are skipped for union pay cards because they have unknown generation algoritm
    unionpay: [
        {length: [16, 17, 18, 19], prefixes: ['622', '624', '625', '626', '628'], skip_luhn: true}
    ],

    dankrot: [
        {length: [16], prefixes: ['5019']}
    ],

    rupay: [
        {length: [16], prefixes: ['6061', '6062', '6063', '6064', '6065', '6066', '6067', '6068', '6069', '607', '608'], skip_luhn: true}
    ]

}

然后通过搜索前缀和比较长度,您可以检测信用卡品牌。另外不要忘记luhn algoritm(这里是descibed http://en.wikipedia.org/wiki/Luhn )。

12
Fivell

Anatoliy在PHP中的答案:

 public static function detectCardType($num)
 {
    $re = array(
        "visa"       => "/^4[0-9]{12}(?:[0-9]{3})?$/",
        "mastercard" => "/^5[1-5][0-9]{14}$/",
        "amex"       => "/^3[47][0-9]{13}$/",
        "discover"   => "/^6(?:011|5[0-9]{2})[0-9]{12}$/",
    );

    if (preg_match($re['visa'],$num))
    {
        return 'visa';
    }
    else if (preg_match($re['mastercard'],$num))
    {
        return 'mastercard';
    }
    else if (preg_match($re['amex'],$num))
    {
        return 'amex';
    }
    else if (preg_match($re['discover'],$num))
    {
        return 'discover';
    }
    else
    {
        return false;
    }
 }
7
angelcool.net

紧凑的JavaScript版本

    var getCardType = function (number) {
        var cards = {
            visa: /^4[0-9]{12}(?:[0-9]{3})?$/,
            mastercard: /^5[1-5][0-9]{14}$/,
            amex: /^3[47][0-9]{13}$/,
            diners: /^3(?:0[0-5]|[68][0-9])[0-9]{11}$/,
            discover: /^6(?:011|5[0-9]{2})[0-9]{12}$/,
            jcb: /^(?:2131|1800|35\d{3})\d{11}$/
        };
        for (var card in cards) {
            if (cards[card].test(number)) {
                return card;
            }
        }
    };
7
Nick

这是一个php类函数,由CCnumber返回CCtype。
此代码未验证卡是否运行Luhn算法仅尝试根据 此页面中的表格找到信用卡类型 。基本上使用CCnumber长度和CCcard前缀来确定CCcard类型。

    <?php class CreditcardType
    {
   public static $creditcardTypes = array(
            array('Name'=>'American Express','cardLength'=>array(15),'cardPrefix'=>array('34', '37'))
            ,array('Name'=>'Maestro','cardLength'=>array(12, 13, 14, 15, 16, 17, 18, 19),'cardPrefix'=>array('5018', '5020', '5038', '6304', '6759', '6761', '6763'))
            ,array('Name'=>'Mastercard','cardLength'=>array(16),'cardPrefix'=>array('51', '52', '53', '54', '55'))
            ,array('Name'=>'Visa','cardLength'=>array(13,16),'cardPrefix'=>array('4'))
            ,array('Name'=>'JCB','cardLength'=>array(16),'cardPrefix'=>array('3528', '3529', '353', '354', '355', '356', '357', '358'))
            ,array('Name'=>'Discover','cardLength'=>array(16),'cardPrefix'=>array('6011', '622126', '622127', '622128', '622129', '62213',
                                        '62214', '62215', '62216', '62217', '62218', '62219',
                                        '6222', '6223', '6224', '6225', '6226', '6227', '6228',
                                        '62290', '62291', '622920', '622921', '622922', '622923',
                                        '622924', '622925', '644', '645', '646', '647', '648',
                                        '649', '65'))
            ,array('Name'=>'Solo','cardLength'=>array(16, 18, 19),'cardPrefix'=>array('6334', '6767'))
            ,array('Name'=>'Unionpay','cardLength'=>array(16, 17, 18, 19),'cardPrefix'=>array('622126', '622127', '622128', '622129', '62213', '62214',
                                        '62215', '62216', '62217', '62218', '62219', '6222', '6223',
                                        '6224', '6225', '6226', '6227', '6228', '62290', '62291',
                                        '622920', '622921', '622922', '622923', '622924', '622925'))
            ,array('Name'=>'Diners Club','cardLength'=>array(14),'cardPrefix'=>array('300', '301', '302', '303', '304', '305', '36'))
            ,array('Name'=>'Diners Club US','cardLength'=>array(16),'cardPrefix'=>array('54', '55'))
            ,array('Name'=>'Diners Club Carte Blanche','cardLength'=>array(14),'cardPrefix'=>array('300','305'))
            ,array('Name'=>'Laser','cardLength'=>array(16, 17, 18, 19),'cardPrefix'=>array('6304', '6706', '6771', '6709'))
    );     
        private function __construct() {}    
        public static function getType($CCNumber)
        {
            $CCNumber= trim($CCNumber);
            $type='Unknown';
            foreach (CreditcardType::$creditcardTypes as $card){
                if (! in_array(strlen($CCNumber),$card['cardLength'])) {
                    continue;
                }
                $prefixes = '/^('.implode('|',$card['cardPrefix']).')/';            
                if(preg_match($prefixes,$CCNumber) == 1 ){
                    $type= $card['Name'];
                    break;
                }
            }
            return $type;
        }
    } ?>
6
ismail

信用卡的第一个数字可用于估算供应商:

  • 签证:49,44或47
  • 签证电子:42,45,48,49
  • 万事达卡:51
  • 美国运通:34
  • 用餐者:30,36,38
  • JCB:35
5
Shoban

在卡片范围识别(CRR)中,使用一系列正则表达式或其他硬编码范围的算法的缺点是BIN/IIN在我的经验中确实会随着时间的推移而发生变化。卡片的联合品牌是一个持续的复杂功能。不同的卡片购买者/商家可能需要以不同的方式对待同一张卡片,具体取决于例如地理位置。

另外,在最近几年,例如银联卡在更广泛的流通中,现有的型号无法应对新的范围,有时会与更广泛的范围交错。
了解您的系统需要覆盖的地理位置可能有所帮助,因为某些范围仅限于在特定国家/地区使用。例如,范围62包括美国的一些AAA子范围,但如果您的商家基地位于美国境外,您可以将所有62个视为银联。
您可能还会被要求根据商家位置对卡片进行不同的处理。例如。将某些英国卡片视为国内借记卡,但作为国际信用卡。

一个主要的收购银行维护着非常有用的规则。例如。 https://www.barclaycard.co.uk/business/files/BIN-Rules-EIRE.pdfhttps://www.barclaycard.co.uk/business/files/BIN-Rules- UK.pdf 。 (截至2017年6月的有效链接,感谢提供更新参考链接的用户。)但请注意,虽然这些CRR规则可能代表卡发行范围,因为它适用于该实体获得的商家,它不包括例如标识为CUP/UPI的范围。

这些注释适用于磁条(MagStripe)或PKE(Pan Key Entry)场景。 ICC/EMV世界的情况再次不同。

更新:此页面上的其他答案(以及链接的WikiPedia页面)JCB始终为16长。然而,在我的公司,我们有一个专门的工程师团队,他们在多个收单银行和地区认证我们的POS设备和软件。这支团队从JCB获得的最新认证证书包含19个长PAN的通行证。

5
MikeRoger

不要尝试检测信用卡类型作为处理付款的一部分。您有可能拒绝有效的交易。

如果您需要向您的支付处理商提供信息(例如Paypal信用卡对象需要命名 卡类型 ),请从可用的最少信息中猜测,例如,.

$credit_card['pan'] = preg_replace('/[^0-9]/', '', $credit_card['pan']);
$inn = (int) mb_substr($credit_card['pan'], 0, 2);

// @see http://en.wikipedia.org/wiki/List_of_Bank_Identification_Numbers#Overview
if ($inn >= 40 && $inn <= 49) {
    $type = 'visa';
} else if ($inn >= 51 && $inn <= 55) {
    $type = 'mastercard';
} else if ($inn >= 60 && $inn <= 65) {
    $type = 'discover';
} else if ($inn >= 34 && $inn <= 37) {
    $type = 'amex';
} else {
    throw new \UnexpectedValueException('Unsupported card type.');
}

这种实现(仅使用前两位数字)足以识别所有主要(在Paypal的情况下所有支持的)卡方案。实际上,您可能希望完全跳过该异常并默认为最常用的卡类型。让支付网关/处理器告诉您是否存在响应您的请求的验证错误。

实际情况是您的支付网关 并不关心您提供的价值

5
Gajus

Swift 2.1版本的Usman Y的回答。使用print语句验证所谓的字符串值

print(self.validateCardType(self.creditCardField.text!))

func validateCardType(testCard: String) -> String {

    let regVisa = "^4[0-9]{12}(?:[0-9]{3})?$"
    let regMaster = "^5[1-5][0-9]{14}$"
    let regExpress = "^3[47][0-9]{13}$"
    let regDiners = "^3(?:0[0-5]|[68][0-9])[0-9]{11}$"
    let regDiscover = "^6(?:011|5[0-9]{2})[0-9]{12}$"
    let regJCB = "^(?:2131|1800|35\\d{3})\\d{11}$"


    let regVisaTest = NSPredicate(format: "SELF MATCHES %@", regVisa)
    let regMasterTest = NSPredicate(format: "SELF MATCHES %@", regMaster)
    let regExpressTest = NSPredicate(format: "SELF MATCHES %@", regExpress)
    let regDinersTest = NSPredicate(format: "SELF MATCHES %@", regDiners)
    let regDiscoverTest = NSPredicate(format: "SELF MATCHES %@", regDiscover)
    let regJCBTest = NSPredicate(format: "SELF MATCHES %@", regJCB)


    if regVisaTest.evaluateWithObject(testCard){
        return "Visa"
    }
    else if regMasterTest.evaluateWithObject(testCard){
        return "MasterCard"
    }

    else if regExpressTest.evaluateWithObject(testCard){
        return "American Express"
    }

    else if regDinersTest.evaluateWithObject(testCard){
        return "Diners Club"
    }

    else if regDiscoverTest.evaluateWithObject(testCard){
        return "Discover"
    }

    else if regJCBTest.evaluateWithObject(testCard){
        return "JCB"
    }

    return ""

}
3
Daisy R.

我的jQuery解决方案:

function detectCreditCardType() {
    var type = new Array;
    type[1] = '^4[0-9]{12}(?:[0-9]{3})?$';      // visa
    type[2] = '^5[1-5][0-9]{14}$';              // mastercard
    type[3] = '^6(?:011|5[0-9]{2})[0-9]{12}$';  // discover
    type[4] = '^3[47][0-9]{13}$';               // amex

    var ccnum = $('.creditcard').val().replace(/[^\d.]/g, '');
    var returntype = 0;

    $.each(type, function(idx, re) {
        var regex = new RegExp(re);
        if(regex.test(ccnum) && idx>0) {
            returntype = idx;
        }
    });

    return returntype;
}

如果返回0,则不会检测到信用卡类型。

应将“creditcard”类添加到信用卡输入字段中。

3
ZurabWeb

Stripe为卡片方案检测提供了这个梦幻般的 javascript 库。让我添加一些代码片段并向您展示如何使用它。

首先将其包含在您的网页中

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/jquery.payment/1.2.3/jquery.payment.js " ></script>

其次使用函数cardType来检测卡方案。

$(document).ready(function() {              
            var type = $.payment.cardType("4242 4242 4242 4242"); //test card number
            console.log(type);                                   
}); 

以下是更多示例和演示的参考链接。

  1. jquery.payment.js的条纹博客
  2. Github存储库
2
NJInamdar

在Swift中,您可以创建一个枚举来检测信用卡类型。

enum CreditCardType: Int { // Enum which encapsulates different card types and method to find the type of card.

case Visa
case Master
case Amex
case Discover

func validationRegex() -> String {
    var regex = ""
    switch self {
    case .Visa:
        regex = "^4[0-9]{6,}$"

    case .Master:
        regex = "^5[1-5][0-9]{5,}$"

    case .Amex:
        regex = "^3[47][0-9]{13}$"

    case .Discover:
        regex = "^6(?:011|5[0-9]{2})[0-9]{12}$"
    }

    return regex
}

func validate(cardNumber: String) -> Bool {
    let predicate = NSPredicate(format: "SELF MATCHES %@", validationRegex())
    return predicate.evaluateWithObject(cardNumber)
}

// Method returns the credit card type for given card number
static func cardTypeForCreditCardNumber(cardNumber: String) -> CreditCardType?  {
    var creditCardType: CreditCardType?

    var index = 0
    while let cardType = CreditCardType(rawValue: index) {
        if cardType.validate(cardNumber) {
            creditCardType = cardType
            break
        } else {
            index++
        }
    }
    return creditCardType
  }
}

调用CreditCardType.cardTypeForCreditCardNumber(“#card number”)方法,该方法返回CreditCardType枚举值。

2
Vidyalaxmi

我搜索了很多信用卡格式和电话号码格式。找到了很多好的提示,但没有什么能真正符合我的确切需求,所以我创建了 这段代码 。你这样使用它:

var sf = smartForm.formatCC(myInputString);
var cardType = sf.cardType;
2
ShadeTreeDeveloper

只需一点勺子喂食:

$("#CreditCardNumber").focusout(function () {


        var regVisa = /^4[0-9]{12}(?:[0-9]{3})?$/;
        var regMasterCard = /^5[1-5][0-9]{14}$/;
        var regAmex = /^3[47][0-9]{13}$/;
        var regDiscover = /^6(?:011|5[0-9]{2})[0-9]{12}$/;

        if (regVisa.test($(this).val())) {
            $("#CCImage").html("<img height='40px' src='@Url.Content("~/images/visa.png")'>");          

        }

        else if (regMasterCard.test($(this).val())) {
        $("#CCImage").html("<img height='40px' src='@Url.Content("~/images/mastercard.png")'>");

        }

        else if (regAmex.test($(this).val())) {

           $("#CCImage").html("<img height='40px' src='@Url.Content("~/images/amex.png")'>");

        }
         else if (regDiscover.test($(this).val())) {

           $("#CCImage").html("<img height='40px' src='@Url.Content("~/images/discover.png")'>");

        }
        else {
        $("#CCImage").html("NA");

        }

    });
1
Pinch

下面是一些用Python编写的布尔函数示例,如果根据函数名检测到卡,则返回True

def is_american_express(cc_number):
    """Checks if the card is an american express. If us billing address country code, & is_amex, use vpos
    https://en.wikipedia.org/wiki/Bank_card_number#cite_note-GenCardFeatures-3
    :param cc_number: unicode card number
    """
    return bool(re.match(r'^3[47][0-9]{13}$', cc_number))


def is_visa(cc_number):
    """Checks if the card is a visa, begins with 4 and 12 or 15 additional digits.
    :param cc_number: unicode card number
    """

    # Standard Visa is 13 or 16, debit can be 19
    if bool(re.match(r'^4', cc_number)) and len(cc_number) in [13, 16, 19]:
        return True

    return False


def is_mastercard(cc_number):
    """Checks if the card is a mastercard. Begins with 51-55 or 2221-2720 and 16 in length.
    :param cc_number: unicode card number
    """
    if len(cc_number) == 16 and cc_number.isdigit():  # Check digit, before cast to int
        return bool(re.match(r'^5[1-5]', cc_number)) or int(cc_number[:4]) in range(2221, 2721)
    return False


def is_discover(cc_number):
    """Checks if the card is discover, re would be too hard to maintain. Not a supported card.
    :param cc_number: unicode card number
    """
    if len(cc_number) == 16:
        try:
            # return bool(cc_number[:4] == '6011' or cc_number[:2] == '65' or cc_number[:6] in range(622126, 622926))
            return bool(cc_number[:4] == '6011' or cc_number[:2] == '65' or 622126 <= int(cc_number[:6]) <= 622925)
        except ValueError:
            return False
    return False


def is_jcb(cc_number):
    """Checks if the card is a jcb. Not a supported card.
    :param cc_number: unicode card number
    """
    # return bool(re.match(r'^(?:2131|1800|35\d{3})\d{11}$', cc_number))  # wikipedia
    return bool(re.match(r'^35(2[89]|[3-8][0-9])[0-9]{12}$', cc_number))  # PawelDecowski


def is_diners_club(cc_number):
    """Checks if the card is a diners club. Not a supported card.
    :param cc_number: unicode card number
    """
    return bool(re.match(r'^3(?:0[0-6]|[68][0-9])[0-9]{11}$', cc_number))  # 0-5 = carte blance, 6 = international


def is_laser(cc_number):
    """Checks if the card is laser. Not a supported card.
    :param cc_number: unicode card number
    """
    return bool(re.match(r'^(6304|670[69]|6771)', cc_number))


def is_maestro(cc_number):
    """Checks if the card is maestro. Not a supported card.
    :param cc_number: unicode card number
    """
    possible_lengths = [12, 13, 14, 15, 16, 17, 18, 19]
    return bool(re.match(r'^(50|5[6-9]|6[0-9])', cc_number)) and len(cc_number) in possible_lengths


# Child cards

def is_visa_electron(cc_number):
    """Child of visa. Checks if the card is a visa electron. Not a supported card.
    :param cc_number: unicode card number
    """
    return bool(re.match(r'^(4026|417500|4508|4844|491(3|7))', cc_number)) and len(cc_number) == 16


def is_total_rewards_visa(cc_number):
    """Child of visa. Checks if the card is a Total Rewards Visa. Not a supported card.
    :param cc_number: unicode card number
    """
    return bool(re.match(r'^41277777[0-9]{8}$', cc_number))


def is_diners_club_carte_blanche(cc_number):
    """Child card of diners. Checks if the card is a diners club carte blance. Not a supported card.
    :param cc_number: unicode card number
    """
    return bool(re.match(r'^30[0-5][0-9]{11}$', cc_number))  # github PawelDecowski, jquery-creditcardvalidator


def is_diners_club_carte_international(cc_number):
    """Child card of diners. Checks if the card is a diners club international. Not a supported card.
    :param cc_number: unicode card number
    """
    return bool(re.match(r'^36[0-9]{12}$', cc_number))  # jquery-creditcardvalidator
1
radtek
// abobjects.com, parvez ahmad ab bulk mailer
use below script

function isValidCreditCard2(type, ccnum) {
       if (type == "Visa") {
          // Visa: length 16, prefix 4, dashes optional.
          var re = /^4\d{3}?\d{4}?\d{4}?\d{4}$/;
       } else if (type == "MasterCard") {
          // Mastercard: length 16, prefix 51-55, dashes optional.
          var re = /^5[1-5]\d{2}?\d{4}?\d{4}?\d{4}$/;
       } else if (type == "Discover") {
          // Discover: length 16, prefix 6011, dashes optional.
          var re = /^6011?\d{4}?\d{4}?\d{4}$/;
       } else if (type == "AmEx") {
          // American Express: length 15, prefix 34 or 37.
          var re = /^3[4,7]\d{13}$/;
       } else if (type == "Diners") {
          // Diners: length 14, prefix 30, 36, or 38.
          var re = /^3[0,6,8]\d{12}$/;
       }
       if (!re.test(ccnum)) return false;
       return true;
       /*
       // Remove all dashes for the checksum checks to eliminate negative numbers
       ccnum = ccnum.split("-").join("");
       // Checksum ("Mod 10")
       // Add even digits in even length strings or odd digits in odd length strings.
       var checksum = 0;
       for (var i=(2-(ccnum.length % 2)); i<=ccnum.length; i+=2) {
          checksum += parseInt(ccnum.charAt(i-1));
       }
       // Analyze odd digits in even length strings or even digits in odd length strings.
       for (var i=(ccnum.length % 2) + 1; i<ccnum.length; i+=2) {
          var digit = parseInt(ccnum.charAt(i-1)) * 2;
          if (digit < 10) { checksum += digit; } else { checksum += (digit-9); }
       }
       if ((checksum % 10) == 0) return true; else return false;
       */

    }
jQuery.validator.addMethod("isValidCreditCard", function(postalcode, element) { 
    return isValidCreditCard2($("#cardType").val(), $("#cardNum").val()); 

}, "<br>credit card is invalid");


     Type</td>
                                          <td class="text">&nbsp; <form:select path="cardType" cssclass="fields" style="border: 1px solid #D5D5D5;padding: 0px 0px 0px 0px;width: 130px;height: 22px;">
                                              <option value="SELECT">SELECT</option>
                                              <option value="MasterCard">Mastercard</option>
                                              <option value="Visa">Visa</option>
                                               <option value="AmEx">American Express</option>
                                              <option value="Discover">Discover</option>
                                            </form:select> <font color="#FF0000">*</font> 

$("#signupForm").validate({

    rules:{
       companyName:{required: true},
       address1:{required: true},
       city:{required: true},
       state:{required: true},
       Zip:{required: true},
       country:{required: true},
       chkAgree:{required: true},
       confPassword:{required: true},
       lastName:{required: true},
       firstName:{required: true},
       ccAddress1:{required: true},
       ccZip:{         
           postalcode : true
       },
       phone:{required: true},
       email:{
           required: true,
           email: true
           },
       userName:{
           required: true,
           minlength: 6
           },
       password:{
           required: true,
           minlength: 6
           },          
       cardNum:{           
            isValidCreditCard : true
       },
1
Parvez

我使用 https://github.com/bendrucker/creditcards-types/ 从号码中检测信用卡类型。我遇到的一个问题是发现测试号6011 1111 1111 1117

来自 https://www.cybersource.com/developers/other_resources/quick_references/test_cc_numbers/ 我们可以看到它是一个发现号码,因为它从6011开始。但我从信用卡类型得到的结果是“Maestro ”。我向作者公开了这个问题。他很快回复了我并提供了这个pdf doc https://www.discovernetwork.com/downloads/IPP_VAR_Compliance.pdf 从文档我们可以清楚地看到6011 1111 1111 1117不属于发现信用的范围卡。

0
yuxiaomin

试试吧。对于斯威夫特。

func checkCardValidation(number : String) -> Bool
{
    let reversedInts = number.characters.reversed().map { Int(String($0)) }
        return reversedInts.enumerated().reduce(0, {(sum, val) in
            let odd = val.offset % 2 == 1
            return sum + (odd ? (val.element! == 9 ? 9 : (val.element! * 2) % 9) : val.element!)
        }) % 10 == 0
}

使用。

if (self.checkCardValidation(number: "yourNumber") == true) {
     print("Card Number valid")
}else{
     print("Card Number not valid")
}
0
Dixit Akabari

卡号的前六位数(包括初始MII数字)称为 发行者标识号 (IIN)。它们识别向卡持有者发行卡的发卡机构。其余的号码由发卡机构分配。卡号的长度是其位数。许多发卡机构在其卡上打印整个IIN和帐号。

基于以上事实,我想保留一些 Java 代码来识别卡牌。

样品卡类型

public static final String AMERICAN_EXPRESS = "American Express";
public static final String DISCOVER = "Discover";
public static final String JCB = "JCB";
public static final String DINERS_CLUB = "Diners Club";
public static final String VISA = "Visa";
public static final String MASTERCARD = "MasterCard";
public static final String UNKNOWN = "Unknown";

卡前缀

// Based on http://en.wikipedia.org/wiki/Bank_card_number#Issuer_identification_number_.28IIN.29
public static final String[] PREFIXES_AMERICAN_EXPRESS = {"34", "37"};
public static final String[] PREFIXES_DISCOVER = {"60", "62", "64", "65"};
public static final String[] PREFIXES_JCB = {"35"};
public static final String[] PREFIXES_DINERS_CLUB = {"300", "301", "302", "303", "304", "305", "309", "36", "38", "39"};
public static final String[] PREFIXES_VISA = {"4"};
public static final String[] PREFIXES_MASTERCARD = {
        "2221", "2222", "2223", "2224", "2225", "2226", "2227", "2228", "2229",
        "223", "224", "225", "226", "227", "228", "229",
        "23", "24", "25", "26",
        "270", "271", "2720",
        "50", "51", "52", "53", "54", "55"
    };

检查输入的数字是否具有任何给定的前缀。

public String getBrand(String number) {

String evaluatedType;
if (StripeTextUtils.hasAnyPrefix(number, PREFIXES_AMERICAN_EXPRESS)) {
    evaluatedType = AMERICAN_EXPRESS;
} else if (StripeTextUtils.hasAnyPrefix(number, PREFIXES_DISCOVER)) {
    evaluatedType = DISCOVER;
} else if (StripeTextUtils.hasAnyPrefix(number, PREFIXES_JCB)) {
    evaluatedType = JCB;
} else if (StripeTextUtils.hasAnyPrefix(number, PREFIXES_DINERS_CLUB)) {
    evaluatedType = DINERS_CLUB;
} else if (StripeTextUtils.hasAnyPrefix(number, PREFIXES_VISA)) {
    evaluatedType = VISA;
} else if (StripeTextUtils.hasAnyPrefix(number, PREFIXES_MASTERCARD)) {
    evaluatedType = MASTERCARD;
} else {
    evaluatedType = UNKNOWN;
}
    return evaluatedType;
}

最后,实用方法

/**
  * Check to see if the input number has any of the given prefixes.
  *
  * @param number the number to test
  * @param prefixes the prefixes to test against
  * @return {@code true} if number begins with any of the input prefixes
*/

public static boolean hasAnyPrefix(String number, String... prefixes) {
  if (number == null) {
       return false;
  }
   for (String prefix : prefixes) {
       if (number.startsWith(prefix)) {
       return true;
    }
  }
     return false;
}

参考

0
Anoop M

各自的卡供应商匹配的正则表达式规则

  • VISA的(4\d{12}(?:\d{3})?)
  • (5[1-5]\d{14})为万事达卡。
  • AMEX的(3[47]\d{13})
  • ((?:5020|5038|6304|6579|6761)\d{12}(?:\d\d)?)为Maestro。
  • 适合大来俱乐部的(3(?:0[0-5]|[68][0-9])[0-9]{11})
  • (6(?:011|5[0-9]{2})[0-9]{12}) for Discover。
  • JCB的(35[2-8][89]\d\d\d{10})
0
rajan
follow Luhn’s algorithm

 private  boolean validateCreditCardNumber(String str) {

        int[] ints = new int[str.length()];
        for (int i = 0; i < str.length(); i++) {
            ints[i] = Integer.parseInt(str.substring(i, i + 1));
        }
        for (int i = ints.length - 2; i >= 0; i = i - 2) {
            int j = ints[i];
            j = j * 2;
            if (j > 9) {
                j = j % 10 + 1;
            }
            ints[i] = j;
        }
        int sum = 0;
        for (int i = 0; i < ints.length; i++) {
            sum += ints[i];
        }
        if (sum % 10 == 0) {
           return true;
        } else {
            return false;
        }


    }

then call this method

Edittext mCreditCardNumberEt;

 mCreditCardNumberEt.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {

             int cardcount=   s.toString().length();
                 if(cardcount>=16) {
                    boolean cardnumbervalid=   validateCreditCardNumber(s.toString());
                    if(cardnumbervalid) {
                        cardvalidtesting.setText("Valid Card");
                        cardvalidtesting.setTextColor(ContextCompat.getColor(context,R.color.green));
                    }
                    else {
                        cardvalidtesting.setText("Invalid Card");
                        cardvalidtesting.setTextColor(ContextCompat.getColor(context,R.color.red));
                    }
                }
               else if(cardcount>0 &&cardcount<16) {
                     cardvalidtesting.setText("Invalid Card");
                     cardvalidtesting.setTextColor(ContextCompat.getColor(context,R.color.red));
                }

                else {
                    cardvalidtesting.setText("");

                }


                }

            @Override
            public void afterTextChanged(Editable s) {

            }
        });
0
gaurav gupta