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
PHP自动生成月历代码
Oct 09 PHP
php Mysql日期和时间函数集合
Nov 16 PHP
php session 错误
May 21 PHP
浅析php中常量,变量的作用域和生存周期
Aug 10 PHP
php中base_convert()进制数字转换函数实例
Nov 20 PHP
ThinkPHP公共配置文件与各自项目中配置文件组合的方法
Nov 24 PHP
PHP连接操作access数据库实例
Mar 30 PHP
PHP实现补齐关闭的HTML标签
Mar 22 PHP
PHP利用超级全局变量$_POST来接收表单数据的实例
Nov 05 PHP
PHP基于PDO实现的SQLite操作类【包含增删改查及事务等操作】
Jun 21 PHP
PHP实现随机发放扑克牌
Apr 21 PHP
laravel添加角色和模糊搜索功能的实现代码
Jun 22 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
PHP网页游戏学习之Xnova(ogame)源码解读(八)
2014/06/23 PHP
ThinkPHP做文字水印时提示call an undefined function exif_imagetype()解决方法
2014/10/30 PHP
从性能方面考虑PHP下载远程文件的3种方法
2015/12/29 PHP
php实现的http请求封装示例
2016/11/08 PHP
PHP通过bypass disable functions执行系统命令的方法汇总
2018/05/02 PHP
laravel实现上传图片的两种方式小结
2019/10/12 PHP
node.js超时timeout详解
2014/11/26 Javascript
jquery模拟alert的弹窗插件
2015/07/31 Javascript
直接拿来用的页面跳转进度条JS实现
2016/01/06 Javascript
jQuery操作cookie
2016/08/08 Javascript
AngularJS指令用法详解
2016/11/02 Javascript
关于Function中的bind()示例详解
2016/12/02 Javascript
Javascript Function.prototype.bind详细分析
2016/12/29 Javascript
微信小程序使用map组件实现检索(定位位置)周边的POI功能示例
2019/01/23 Javascript
在微信小程序中使用图表的方法示例
2019/04/25 Javascript
jQuery操作动画完整实例分析
2020/01/10 jQuery
文章或博客自动生成章节目录索引(支持三级)的实现代码
2020/05/10 Javascript
基于Web Audio API实现音频可视化效果
2020/06/12 Javascript
vue 遮罩层阻止默认滚动事件操作
2020/07/28 Javascript
python 将字符串转换成字典dict
2013/03/24 Python
Python多线程编程(五):死锁的形成
2015/04/05 Python
python判断一个集合是否包含了另外一个集合中所有项的方法
2015/06/30 Python
python实现可以断点续传和并发的ftp程序
2016/09/13 Python
PyQt5 对图片进行缩放的实例
2019/06/18 Python
python 实现读取csv数据,分类求和 再写进 csv
2020/05/18 Python
python cv2.resize函数high和width注意事项说明
2020/07/05 Python
Java byte数组操纵方式代码实例解析
2020/07/22 Python
python实现简单文件读写函数
2021/02/25 Python
2014党的群众路线教育实践活动总结材料
2014/10/31 职场文书
军训心得体会范文(2016最新篇)
2016/01/11 职场文书
村党总支部公开承诺书2016
2016/03/25 职场文书
JVM入门之类加载与字节码技术(类加载与类的加载器)
2021/06/15 Java/Android
mysql left join快速转inner join的过程
2021/06/30 MySQL
CSS三大特性继承性、层叠性和优先级详解
2022/01/18 HTML / CSS
javascript进阶篇深拷贝实现的四种方式
2022/07/07 Javascript
css清除浮动clearfix:after的用法详解(附完整代码)
2023/05/21 HTML / CSS