php实现用于验证所有类型的信用卡类

本文实例讲述了php实现用于验证所有类型的信用卡类。分享给大家供大家参考。具体如下：

这个php类比较完整，可以用于验证各种不同的信用卡，针对信用卡的卡号的通用规则进行了验证，同时对不同类型的信用卡进行了针对性的识别。
代码接受一个信用卡号码和有效日期，如果两者都有效，则返回TRUE,否则返回FALSE。

本插件接受以下参数：
$number 表示信用卡号码的一个字符串
$expiry 信用卡有效日期，采用07/12或0712这样的格式

<?php// Plug-in 32: Validate Credit Card// This is an executable example with additional code supplied// To obtain just the plug-ins please click on the Download link$card  = "4567 1234 5678 9101";$exp  = "06/11";echo "Validating: $card : $exp<br>";$result = PIPHP_ValidateCC($card, $exp);if ($result != FALSE) echo "Card Validated";else echo "Card did not validate";function PIPHP_ValidateCC($number, $expiry){  // Plug-in 32: Validate Credit Card  //  // This plug-in accepts a credit card number and  // an expiry date and returns TRUE or FALSE,  // depending on whether the details pass date  // and checksum validation. The arguments required  // are:  //  //  $number: Credit Card Number  //  $expiry: Expiry date in the form:  //    07/12 or 0712 (for July, 2012)  $number = preg_replace('/[^/d]/', '', $number);  $expiry = preg_replace('/[^/d]/', '', $expiry);  $left  = substr($number, 0, 4);  $cclen = strlen($number);  $chksum = 0;  // Diners Club  if (($left >= 3000) && ($left <= 3059) ||    ($left >= 3600) && ($left <= 3699) ||    ($left >= 3800) && ($left <= 3889))   if ($cclen != 14) return FALSE;  // JCB  if (($left >= 3088) && ($left <= 3094) ||    ($left >= 3096) && ($left <= 3102) ||    ($left >= 3112) && ($left <= 3120) ||    ($left >= 3158) && ($left <= 3159) ||    ($left >= 3337) && ($left <= 3349) ||    ($left >= 3528) && ($left <= 3589))   if ($cclen != 16) return FALSE;  // American Express  elseif (($left >= 3400) && ($left <= 3499) ||      ($left >= 3700) && ($left <= 3799))   if ($cclen != 15) return FALSE;  // Carte Blanche  elseif (($left >= 3890) && ($left <= 3899))   if ($cclen != 14) return FALSE;  // Visa  elseif (($left >= 4000) && ($left <= 4999))   if ($cclen != 13 && $cclen != 16) return FALSE;  // MasterCard  elseif (($left >= 5100) && ($left <= 5599))   if ($cclen != 16) return FALSE;  // Australian BankCard  elseif ($left == 5610)   if ($cclen != 16) return FALSE;  // Discover  elseif ($left == 6011)   if ($cclen != 16) return FALSE;  // Unknown  else return FALSE;  for ($j = 1 - ($cclen % 2); $j < $cclen; $j += 2)   $chksum += substr($number, $j, 1);  for ($j = $cclen % 2; $j < $cclen; $j += 2)  {   $d = substr($number, $j, 1) * 2;   $chksum += $d < 10 ? $d : $d - 9;  }  if ($chksum % 10 != 0) return FALSE;  if (mktime(0, 0, 0, substr($expiry, 0, 2), date("t"),   substr($expiry, 2, 2)) < time()) return FALSE;  return TRUE;}?>