PHP随机生成信用卡卡号的方法

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<?php

/*

PHP credit card number generator

Copyright (C) 2006 Graham King graham@darkcoding.net

This program is free software; you can redistribute it and/or

modify it under the terms of the GNU General Public License

as published by the Free Software Foundation; either version 2

of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program; if not, write to the Free Software

Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

*/

$visaPrefixList[] = "4539";

$visaPrefixList[] = "4556";

$visaPrefixList[] = "4916";

$visaPrefixList[] = "4532";

$visaPrefixList[] = "4929";

$visaPrefixList[] = "40240071";

$visaPrefixList[] = "4485";

$visaPrefixList[] = "4716";

$visaPrefixList[] = "4";

$mastercardPrefixList[] = "51";

$mastercardPrefixList[] = "52";

$mastercardPrefixList[] = "53";

$mastercardPrefixList[] = "54";

$mastercardPrefixList[] = "55";

$amexPrefixList[] = "34";

$amexPrefixList[] = "37";

$discoverPrefixList[] = "6011";

$dinersPrefixList[] = "300";

$dinersPrefixList[] = "301";

$dinersPrefixList[] = "302";

$dinersPrefixList[] = "303";

$dinersPrefixList[] = "36";

$dinersPrefixList[] = "38";

$enRoutePrefixList[] = "2014";

$enRoutePrefixList[] = "2149";

$jcbPrefixList[] = "35";

$voyagerPrefixList[] = "8699";

/*

'prefix' is the start of the CC number as a string, any number of digits.

'length' is the length of the CC number to generate. Typically 13 or 16

*/

function completed_number($prefix, $length) {

$ccnumber = $prefix;

# generate digits

while ( strlen($ccnumber) < ($length - 1) ) {

$ccnumber .= rand(0,9);

}

# Calculate sum

$sum = 0;

$pos = 0;

$reversedCCnumber = strrev( $ccnumber );

while ( $pos < $length - 1 ) {

$odd = $reversedCCnumber[ $pos ] * 2;

if ( $odd > 9 ) {

$odd -= 9;

}

$sum += $odd;

if ( $pos != ($length - 2) ) {

$sum += $reversedCCnumber[ $pos +1 ];

}

$pos += 2;

}

# Calculate check digit

$checkdigit = (( floor($sum/10) + 1) * 10 - $sum) % 10;

$ccnumber .= $checkdigit;

return $ccnumber;

}

function credit_card_number($prefixList, $length, $howMany) {

for ($i = 0; $i < $howMany; $i++) {

$ccnumber = $prefixList[ array_rand($prefixList) ];

$result[] = completed_number($ccnumber, $length);

}

return $result;

}

function output($title, $numbers) {

$result[] = "<div class='creditCardNumbers'>";

$result[] = "<h3>$title</h3>";

$result[] = implode('<br />', $numbers);

$result[]= '</div>';

return implode('<br />', $result);

}

#

# Main

#

echo "<div class='creditCardSet'>";

$mastercard = credit_card_number($mastercardPrefixList, 16, 10);

echo output("Mastercard", $mastercard);

$visa16 = credit_card_number($visaPrefixList, 16, 10);

echo output("VISA 16 digit", $visa16);

echo "</div>";

echo "<div class='creditCardSet'>";

$visa13 = credit_card_number($visaPrefixList, 13, 5);

echo output("VISA 13 digit", $visa13);

$amex = credit_card_number($amexPrefixList, 15, 5);

echo output("American Express", $amex);

echo "</div>";

# Minor cards

echo "<div class='creditCardSet'>";

$discover = credit_card_number($discoverPrefixList, 16, 3);

echo output("Discover", $discover);

$diners = credit_card_number($dinersPrefixList, 14, 3);

echo output("Diners Club", $diners);

echo "</div>";

echo "<div class='creditCardSet'>";

$enRoute = credit_card_number($enRoutePrefixList, 15, 3);

echo output("enRoute", $enRoute);

$jcb = credit_card_number($jcbPrefixList, 16, 3);

echo output("JCB", $jcb);

echo "</div>";

echo "<div class='creditCardSet'>";

$voyager = credit_card_number($voyagerPrefixList, 15, 3);

echo output("Voyager", $voyager);

echo "</div>";

?>