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| 1 | <?php |
| 2 | /** |
| 3 | * Pop PHP Framework (http://www.popphp.org/) |
| 4 | * |
| 5 | * @link https://github.com/popphp/popphp-framework |
| 6 | * @author Nick Sagona, III <dev@nolainteractive.com> |
| 7 | * @copyright Copyright (c) 2009-2023 NOLA Interactive, LLC. (http://www.nolainteractive.com) |
| 8 | * @license http://www.popphp.org/license New BSD License |
| 9 | */ |
| 10 | |
| 11 | /** |
| 12 | * @namespace |
| 13 | */ |
| 14 | namespace Pop\Validator; |
| 15 | |
| 16 | /** |
| 17 | * Credit card validator class |
| 18 | * |
| 19 | * @category Pop |
| 20 | * @package Pop\Validator |
| 21 | * @author Nick Sagona, III <dev@nolainteractive.com> |
| 22 | * @copyright Copyright (c) 2009-2023 NOLA Interactive, LLC. (http://www.nolainteractive.com) |
| 23 | * @license http://www.popphp.org/license New BSD License |
| 24 | * @version 3.2.0 |
| 25 | */ |
| 26 | class CreditCard extends AbstractValidator |
| 27 | { |
| 28 | |
| 29 | /** |
| 30 | * Method to evaluate the validator |
| 31 | * |
| 32 | * @param mixed $input |
| 33 | * @return boolean |
| 34 | */ |
| 35 | public function evaluate($input = null) |
| 36 | { |
| 37 | // Set the input, if passed |
| 38 | if (null !== $input) { |
| 39 | $this->input = $input; |
| 40 | if (strpos($this->input, ' ') !== false) { |
| 41 | $this->input = str_replace(' ', '', $this->input); |
| 42 | } |
| 43 | if (strpos($this->input, '-') !== false) { |
| 44 | $this->input = str_replace('-', '', $this->input); |
| 45 | } |
| 46 | } |
| 47 | |
| 48 | // Set the default message |
| 49 | if (null === $this->message) { |
| 50 | $this->message = 'The value must be a valid credit card number.'; |
| 51 | } |
| 52 | |
| 53 | // Evaluate the input against the validator |
| 54 | $nums = str_split($this->input); |
| 55 | $check = $nums[count($nums) - 1]; |
| 56 | $start = count($nums) - 2; |
| 57 | $sum = 0; |
| 58 | $double = true; |
| 59 | |
| 60 | for ($i = $start; $i >= 0; $i--) { |
| 61 | if ($double) { |
| 62 | $num = $nums[$i] * 2; |
| 63 | if ($num > 9) { |
| 64 | $num = substr($num, 0, 1) + substr($num, 1, 1); |
| 65 | } |
| 66 | $sum += $num; |
| 67 | $double = false; |
| 68 | } else { |
| 69 | $sum += $nums[$i]; |
| 70 | $double = true; |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | $sum += $check; |
| 75 | $rem = $sum % 10; |
| 76 | |
| 77 | return ($rem == 0); |
| 78 | } |
| 79 | |
| 80 | } |