php实现通用的信用卡验证类


Posted in PHP onMarch 24, 2015

本文实例讲述了php实现通用的信用卡验证类。分享给大家供大家参考。

原文说明如下:

Credit Card Validation Solution (PHP Edition)
Version 3.5

Description
Credit Card Validation Solution™ uses a four step process to ensure credit card numbers are keyed in correctly. This procedure accurately checks cards from American Express, Australian BankCard, Carte Blache, Diners Club, Discover/Novus, JCB, MasterCard and Visa.
For more information, please read the comments in the code itself.

Installation Instructions
Select the text between the two lines indicated, below.
Copy the text.
Open up a text editor.
Paste the text.
Save that file. When saving it, make sure to:
save it in a directory on your webserver, and
name it with an extension that your server will recognize needs parsing by PHP.
To see it in action, open up that file in your web browswer.

具体代码如下:

<?php
# ------------------------------------------------------------------------
# Credit Card Validation Solution, version 3.5         PHP Edition
# 25 May 2000
#
# COPYRIGHT NOTICE:
# a) This code is property of The Analysis and Solutions Company.
# b) It is being distributed free of charge and on an "as is" basis.
# c) Use of this code, or any part thereof, is contingent upon leaving
#   this copyright notice, name and address information in tact.
# d) Written permission must be obtained from us before this code, or any
#   part thereof, is sold or used in a product which is sold.
# e) By using this code, you accept full responsibility for its use
#   and will not hold the Analysis and Solutions Company, its employees
#   or officers liable for damages of any sort.
# f) This code is not to be used for illegal purposes.
# g) Please email us any revisions made to this code.
#
# Copyright 2000         http://www.AnalysisAndSolutions.com/code/
# The Analysis and Solutions Company     info@AnalysisAndSolutions.com
# ------------------------------------------------------------------------
#
# DESCRIPTION:
# Credit Card Validation Solution uses a four step process to ensure
# credit card numbers are keyed in correctly. This procedure accurately
# checks cards from American Express, Australian BankCard, Carte Blache,
# Diners Club, Discover/Novus, JCB, MasterCard and Visa.
#
# CAUTION:
# CCVS uses exact number ranges as part of the validation process. These
# ranges are current as of 20 October 1999. If presently undefined ranges
# come into use in the future, this program will improperly deject card
# numbers in such ranges, rendering an error message entitled "Potential
# Card Type Discrepancy." If this happens while entering a card & type
# you KNOW are valid, please contact us so we can update the ranges.
#
# POTENTIAL CUSTOMIZATIONS:
# * If you don't accept some of these card types, edit Step 2, using pound
# signs "#" to comment out the "elseif," "$CardName" and "$ShouldLength"
# lines in question.
# * Additional card types can be added by inserting new "elseif,"
# "$CardName" and "$ShouldLength" lines in Step 2.
# * The three functions here can be called by other PHP documents to check
# any number.
#
# CREDITS:
# We learned of the Mod 10 Algorithm in some Perl code, entitled
# "The Validator," available on Matt's Script Archive,
# http://worldwidemart.com/scripts/readme/ccver.shtml. That code was
# written by David Paris, who based it on material Melvyn Myers reposted
# from an unknown author. Paris credits Aries Solis for tracking down the
# data underlying the algorithm. At the same time, our code bears no
# resemblance to its predecessors. CCValidationSolution was first written
# for Visual Basic, on which Allen Browne and Rico Zschau assisted.
# Neil Fraser helped prune down the OnlyNumericSolution() for Perl.
function CCValidationSolution ($Number) {
  global $CardName;
  # 1) Get rid of spaces and non-numeric characters.
  $Number = OnlyNumericSolution($Number);
  # 2) Do the first four digits fit within proper ranges?
  #   If so, who's the card issuer and how long should the number be?
  $NumberLeft = substr($Number, 0, 4);
  $NumberLength = strlen($Number);
  if ($NumberLeft >= 3000 and $NumberLeft <= 3059) {
    $CardName = "Diners Club";
    $ShouldLength = 14;
  } elseif ($NumberLeft >= 3600 and $NumberLeft <= 3699) {
    $CardName = "Diners Club";
    $ShouldLength = 14;
  } elseif ($NumberLeft >= 3800 and $NumberLeft <= 3889) {
    $CardName = "Diners Club";
    $ShouldLength = 14;
  } elseif ($NumberLeft >= 3400 and $NumberLeft <= 3499) {
    $CardName = "American Express";
    $ShouldLength = 15;
  } elseif ($NumberLeft >= 3700 and $NumberLeft <= 3799) {
    $CardName = "American Express";
    $ShouldLength = 15;
  } elseif ($NumberLeft >= 3528 and $NumberLeft <= 3589) {
    $CardName = "JCB";
    $ShouldLength = 16;
  } elseif ($NumberLeft >= 3890 and $NumberLeft <= 3899) {
    $CardName = "Carte Blache";
    $ShouldLength = 14;
  } elseif ($NumberLeft >= 4000 and $NumberLeft <= 4999) {
    $CardName = "Visa";
    if ($NumberLength > 14) {
      $ShouldLength = 16;
    } elseif ($NumberLength < 14) {
      $ShouldLength = 13;
    } else {
      echo "<br /><em>The Visa number entered, $Number, in is 14 digits long.<br />Visa cards usually have 16 digits, though some have 13.<br />Please check the number and try again.</em><br />n";
      return FALSE;
    }
  } elseif ($NumberLeft >= 5100 and $NumberLeft <= 5599) {
    $CardName = "MasterCard";
    $ShouldLength = 16;
  } elseif ($NumberLeft == 5610) {
    $CardName = "Australian BankCard";
    $ShouldLength = 16;
  } elseif ($NumberLeft == 6011) {
    $CardName = "Discover/Novus";
    $ShouldLength = 16;
  } else {
    echo "<br /><em>The first four digits of the number entered are $NumberLeft. <br />If that's correct, we don't accept that type of credit card.<br />If it's wrong, please try again.</em><br />n";
    return FALSE;
  }
  # 3) Is the number the right length?
  if ($NumberLength <> $ShouldLength) {
    $Missing = $NumberLength - $ShouldLength;
    if ($Missing < 0) {
      echo "<br /><em>The $CardName number entered, $Number, is missing " . abs($Missing) . " digit(s).<br />Please check the number and try again.</em><br />n";
    } else {
      echo "<br /><em>The $CardName number entered, $Number, has $Missing too many digit(s).<br />Please check the number and try again.</em><br />n";
    }
    return FALSE;
  }
  # 4) Does the number pass the Mod 10 Algorithm Checksum?
  if (Mod10Solution($Number) == TRUE) {
    return TRUE;
  } else {
    echo "<br /><em>The $CardName number entered, $Number, is invalid.<br />Please check the number and try again.</em><br />n";
  return FALSE;
  }
}
function OnlyNumericSolution ($Number) {
  # Remove any non numeric characters.
  # Ensure number is no more than 19 characters long.
  return substr( ereg_replace( "[^0-9]", "", $Number) , 0, 19);
}
function Mod10Solution ($Number) {
  $NumberLength = strlen($Number);
  $Checksum = 0;
  # Add even digits in even length strings
  # or odd digits in odd length strings.
  for ($Location = 1 - ($NumberLength % 2); $Location < $NumberLength; $Location += 2) {
    $Checksum += substr($Number, $Location, 1);
  }
  # Analyze odd digits in even length strings
  # or even digits in odd length strings.
  for ($Location = ($NumberLength % 2); $Location < $NumberLength; $Location += 2) {
    $Digit = substr($Number, $Location, 1) * 2;
    if ($Digit < 10) {
      $Checksum += $Digit;
    } else {
      $Checksum += $Digit - 9;
    }
  }
  # Is the checksum divisible by ten?
  return ($Checksum % 10 == 0);
}
# ----------- BEGIN SAMPLE USER INTERFACE SECTION ------------
#
# This section provides a simple sample user interface for the
# Credit Card Validation functions. It generates an HTML form
# where you enter a card number to check.
#
  # If a number has been posted by the form, check it.
  if ( isset($Number) ) {
    # Get rid of spaces and non-numeric characters in posted
    # numbers so they display correctly on the input form.
    $Number = OnlyNumericSolution($Number);
    if (CCValidationSolution($Number) == TRUE) {
      echo "<br />The $CardName number entered, $Number, <em>is</em> valid.<br />n";
    }
  } else {
    $Number = "";
  }
  # Setup an input form. Posting it calls this page again.
  echo "<form method="post" action="$REQUEST_URI">n";
  echo "<br />Credit Card Number: <input type="text" name="Number" value="$Number">n";
  echo "<input type="Submit" name="submitr" value="Check its Validity">n";
  echo "</form><br />n";
#
# ------------ END SAMPLE USER INTERFACE SECTION -------------
?>

希望本文所述对大家的php程序设计有所帮助。

PHP 相关文章推荐
推荐Discuz!5的PHP代码高亮显示与实现可运行代码
Mar 15 PHP
PHP开发框架总结收藏
Apr 24 PHP
php session和cookie使用说明
Apr 07 PHP
php实现用户在线时间统计详解
Oct 08 PHP
神盾加密解密教程(三)PHP 神盾解密工具
Jun 08 PHP
PHP文件读写操作相关函数总结
Nov 18 PHP
php修改上传图片尺寸的方法
Apr 14 PHP
php简单smarty入门程序实例
Jun 11 PHP
PHP实现的mysql主从数据库状态检测功能示例
Jul 20 PHP
Yii2.0实现生成二维码功能实例
Oct 24 PHP
PHP mongodb操作类定义与用法示例【适合mongodb2.x和mongodb3.x】
Jun 16 PHP
php实现JWT验证的实例教程
Nov 26 PHP
php生成短域名函数
Mar 23 #PHP
PHP随机生成信用卡卡号的方法
Mar 23 #PHP
PHP实现通过Luhn算法校验信用卡卡号是否有效
Mar 23 #PHP
php实现Mongodb自定义方式生成自增ID的方法
Mar 23 #PHP
php实现约瑟夫问题的方法小结
Mar 23 #PHP
php约瑟夫问题解决关于处死犯人的算法
Mar 23 #PHP
PHP贪婪算法解决0-1背包问题实例分析
Mar 23 #PHP
You might like
老生常谈PHP面向对象之命令模式(必看篇)
2017/05/24 PHP
PHP编程实现阳历转换为阴历的方法实例
2017/08/08 PHP
Yii2框架数据验证操作实例详解
2018/05/02 PHP
PHP使用PDO 连接与连接管理操作实例分析
2020/04/21 PHP
详细分析PHP 命名空间(namespace)
2020/06/30 PHP
JavaScript中判断函数是new还是()调用的区别说明
2011/04/07 Javascript
jquery 通过name快速取值示例
2014/01/24 Javascript
JS实现的简洁二级导航菜单雏形效果
2015/10/13 Javascript
使用BootStrap进行轮播图的制作
2017/01/06 Javascript
vue的过滤器filter实例详解
2018/09/17 Javascript
vue使用高德地图根据坐标定位点的实现代码
2019/08/22 Javascript
react实现同页面三级跳转路由布局
2019/09/26 Javascript
js实现橱窗展示效果
2020/01/11 Javascript
[34:44]Liquid vs TNC Supermajor 胜者组 BO3 第二场 6.4
2018/06/05 DOTA
约瑟夫问题的Python和C++求解方法
2015/08/20 Python
Python 如何优雅的将数字转化为时间格式的方法
2019/09/26 Python
python使用 cx_Oracle 模块进行查询操作示例
2019/11/28 Python
Python如何获取Win7,Win10系统缩放大小
2020/01/10 Python
Python爬虫库requests获取响应内容、响应状态码、响应头
2020/01/25 Python
基于TensorFlow中自定义梯度的2种方式
2020/02/04 Python
Python类继承和多态原理解析
2020/02/05 Python
python_mask_array的用法
2020/02/18 Python
使用python处理题库表格并转化为word形式的实现
2020/04/14 Python
Pycharm自动添加文件头注释和函数注释参数的方法
2020/10/23 Python
编写html5时调试发现脚本php等网页js、css等失效
2013/12/31 HTML / CSS
BannerBuzz加拿大:在线定制横幅印刷、广告和标志
2020/03/10 全球购物
Crabtree & Evelyn欧盟:豪华洗浴、身体和护发
2021/03/09 全球购物
通信研究生自荐信
2014/02/01 职场文书
益达广告词
2014/03/14 职场文书
二年级班级文化建设方案
2014/05/10 职场文书
求职信范文怎么写
2015/03/19 职场文书
工程资料员岗位职责
2015/04/13 职场文书
2015最新民情日记范文
2015/06/26 职场文书
如何判断微信付款码和支付宝付款码
2021/04/01 PHP
一条 SQL 语句执行过程
2022/03/17 MySQL
MySQL提取JSON字段数据实现查询
2022/04/22 MySQL