Question

嗨，我正在使用codeigniter。我想验证我的信用卡详细信息。我看到php中有类来验证信用卡号码。我在codeigniter看到了一个帮助者来验证信用卡

http://codeigniter.com/wiki/Credit_Card_Helper

/**
 * Truncates a card number retaining only the first 4 and the last 4 digits.  It then returns the truncated form.
 *
 * @param string The card number to truncate.
 * @return string The truncated card number.
 */
function truncate_card($card_num) {
    $padsize = (strlen($card_num) < 7 ? 0 : strlen($card_num) - 7);
    return substr($card_num, 0, 4) . str_repeat('X', $padsize). substr($card_num, -3);
}


/**
 * Validates a card expiry date.  Finds the midnight on first day of the following 
 * month and ensures that is greater than the current time (cards expire at the 
 * end of the printed month).  Assumes basic sanity checks have already been performed 
 * on month/year (i.e. length, numeric, etc).
 *
 * @param integer The expiry month shown on the card.
 * @param integer The expiry year printed on the card.
 * @return boolean Returns true if the card is still valid, false if it has expired.
 */
function card_expiry_valid($month, $year) {
    $expiry_date = mktime(0, 0, 0, ($month + 1), 1, $year);
    return ($expiry_date > time());
}


/**
 * Strips all non-numerics from the card number.
 *
 * @param string The card number to clean up.
 * @return string The stripped down card number.
 */
function card_number_clean($number) {
    return ereg_replace("[^0-9]", "", $number); 
}


/**
 * Uses the Luhn algorithm (aka Mod10) <http://en.wikipedia.org/wiki/Luhn_algorithm> 
 * to perform basic validation of a credit card number.
 *
 * @param string The card number to validate.
 * @return boolean True if valid according to the Luhn algorith, false otherwise.
 */
function card_number_valid ($card_number) {
    $card_number = strrev(card_number_clean($card_number));
    $sum = 0;

    for ($i = 0; $i < strlen($card_number); $i++) {
      $digit = substr($card_number, $i, 1);

        // Double every second digit
        if ($i % 2 == 1) {
          $digit *= 2;
        }

        // Add digits of 2-digit numbers together
        if ($digit > 9)    {
          $digit = ($digit % 10) + floor($digit / 10);
        }

        $sum += $digit;
    }

    // If the total has no remainder it's OK
    return ($sum % 10 == 0);
}
?>

它使用通用验证。但我希望根据卡片类型进行验证

http://www.braemoor.co.uk/software/creditcard.php

codeigniter中是否有任何库或帮助程序。请帮助.....................

Answer 1

正如人们已经告诉过你的那样，CodeIgniter是一个php框架，使用php编码，在php环境下工作并使用..，php类和函数:)。

此外，您链接的文件是一个简单的功能。一个功能。你知道你能做什么吗？按原样获取文件，将其命名为creditcard_helper.php，将其放在帮助文件夹中，打开它并将整个代码放在此代码段中（丑陋但必要，因为每当您第二次加载帮助程序时否则给你错误）：

if(!function_exists('checkCreditCard')
{
   //the whole content goes here untouched;
}

你已经定下来了。只需使用：

$this->load->helper('creditcard');
if(checkCreditCard($cardnumber, $cardname, &$errornumber, &$errortext))
{
  echo 'card OK';
}
else
{
 echo 'wrong card type/number';
}

Answer 2

我在this helper内找到了CodeIgniter Github wiki page。当放入helpers文件夹中时，您可以使用加载它的控制器或模型中的文件中的函数。

在codeigniter中验证信用卡的最佳方法是什么？

2 个答案: