 |
Join us on FaceBook | |
 |
Submit Your Code | |
 |
Poker Tournaments | |
|
Poker Guide for Developers | |
 |
SEO Monitor | |
 |
UpTime Monitor | |
 |
My Favorite Examples | |
|
My Favorite Articles | |
 |
Update Your Profile |
| More Weber Sites | ||
| PHP Code Search | ||
| Web Development Forums | ||
| Learn MySQL Playing Trivia | ||
| PHPBB2 Templates | ||
| Web Development Resources | ||
| Web Development Content | ||
| Recommended Links | ||
| PHPClasses | ||
| PHP Editor | ||
| PHP Jobs | ||
| Vision.To Design | ||
| Ajax Tutorials | ||
| PHP Programming Help | ||
| PHP/MySQL Programming | ||
| Webmaster Resources | ||
| Webmaster Forum | ||
| XML meta language | ||
| website builder | ||
| Recommended | ||
| פרייסז - השוואת מחירים בסופר | ||
| ZeroLag.com | ||
| Texas Holdem Poker Evangelists | ||
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Code | ||||||||||
<?php //////////////////////////////////////////////////// // // // Credit card validation routine // // May 15, 1998 // // By Brett Error // // [email protected] // // // // validateCC($number[,$type]) // // Uses the MOD 10 algorythm to determine if a // // credit card number is valid. // // // // $number = credit card account number // // $type is optional. Setting type to // // visa, mastercard, discover, or amex will // // perform additional checking on the account // // number. // // // // The function returns 1 (true) if the CC is // // valid, 0 (false) if it is invalid, and -1 if // // the type entered does not match the supported // // types listed above. // // // //////////////////////////////////////////////////// function validateCC($ccnum, $type = 'unknown'){ //Clean up input $type = strtolower($type); $ccnum = ereg_replace('[-[:space:]]', '',$ccnum); //Do type specific checks if ($type == 'unknown') { //Skip type specific checks } elseif ($type == 'mastercard'){ if (strlen($ccnum) != 16 || !ereg('5[1-5]', $ccnum)) return 0; } elseif ($type == 'visa'){ if ((strlen($ccnum) != 13 && strlen($ccnum) != 16) || substr ($ccnum, 0, 1) != '4') return 0; } elseif ($type == 'amex'){ if (strlen($ccnum) != 15 || !ereg('3[47]', $ccnum)) return a; } elseif ($type == 'discover'){ if (strlen($ccnum) != 16 || substr($ccnum, 0, 4) != '6011') return 0; } else { //invalid type entered return -1; } // Start MOD 10 checks $dig = toCharArray($ccnum); $numdig = sizeof ($dig); $j = 0; for ($i=($numdig-2); $i>=0; $i-=2){ $dbl[$j] = $dig[$i] * 2; $j++; } $dblsz = sizeof($dbl); $validate =0; for ($i=0;$i<$dblsz;$i++){ $add = toCharArray($dbl[$i]); for ($j=0;$j<sizeof($add);$j++){ $validate += $add[$j]; } $add = ''; } for ($i=($numdig-1); $i>=0; $i-=2){ $validate += $dig[$i]; } if (substr($validate, -1, 1) == '0') return 1; else return 0; } // takes a string and returns an array of characters function toCharArray($input){ $len = strlen($input); for ($j=0;$j<$len;$j++){ $char[$j] = substr($input, $j, 1); } return ($char); } ?> | ||||||||||
| Related Code Examples | ||||||||||
|
| ||||||||||
