php實現通用的信用卡驗證類

 這篇文章主要介紹了php實現通用的信用卡驗證類,涉及信用卡的規則與php字符串操作的相關技巧,具有一定參考借鑒價值,文中有英文原文注釋說明,有助於更直觀的了解源碼相關信息,需要的朋友可以參考下

   

本文實例講述了php實現通用的信用卡驗證類。分享給大家供大家參考。

原文說明如下：

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.

具體代碼如下：

? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 <?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 [email protected] # ------------------------------------------------------------------------ # # 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