PHP method for randomly generating credit card numbers _ php skills

This article describes how to generate a random credit card number in PHP. it involves php's skills to generate a credit card number based on the credit card number rules. it has some reference value, for more information about how to randomly generate a credit card number using PHP, see the following example. Share it with you for your reference. The specific analysis is as follows:

This PHP code generates a random credit card number based on the rules generated by the credit card number. it can be verified and is for your reference only. please do not use it for illegal purposes. Otherwise, you will be liable for the consequences.

<?php/*PHP credit card number generatorCopyright (C) 2006 Graham King graham@darkcoding.netThis program is free software; you can redistribute it and/ormodify it under the terms of the GNU General Public Licenseas published by the Free Software Foundation; either version 2of 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 ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See theGNU General Public License for more details.You should have received a copy of the GNU General Public Licensealong with this program; if not, write to the Free SoftwareFoundation, 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[] = "
";  $result[] = "$title";  $result[] = implode('
', $numbers);  $result[]= '
';  return implode('
', $result);}## Main#echo "
";$mastercard = credit_card_number($mastercardPrefixList, 16, 10);echo output("Mastercard", $mastercard);$visa16 = credit_card_number($visaPrefixList, 16, 10);echo output("VISA 16 digit", $visa16);echo "
";echo "
";$visa13 = credit_card_number($visaPrefixList, 13, 5);echo output("VISA 13 digit", $visa13);$amex = credit_card_number($amexPrefixList, 15, 5);echo output("American Express", $amex);echo "
";# Minor cardsecho "
";$discover = credit_card_number($discoverPrefixList, 16, 3);echo output("Discover", $discover);$diners = credit_card_number($dinersPrefixList, 14, 3);echo output("Diners Club", $diners);echo "
";echo "
";$enRoute = credit_card_number($enRoutePrefixList, 15, 3);echo output("enRoute", $enRoute);$jcb = credit_card_number($jcbPrefixList, 16, 3);echo output("JCB", $jcb);echo "
";echo "
";$voyager = credit_card_number($voyagerPrefixList, 15, 3);echo output("Voyager", $voyager);echo "
";?>

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