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<?php
namespace Milwad\LaravelValidate\Rules;
use Illuminate\Contracts\Validation\Rule;
class ValidCreditCard implements Rule
{
/**
* Check if the credit card number is valid using the Luhn algorithm.
*/
public function passes($attribute, $value): bool
$value = preg_replace('/\D/', '', $value);
$numLength = strlen($value);
$sum = 0;
$reverse = strrev($value);
for ($i = 0; $i < $numLength; $i++) {
$currentNum = intval($reverse[$i]);
if ($i % 2 == 1) {
$currentNum *= 2;
if ($currentNum > 9) {
$currentNum -= 9;
}
$sum += $currentNum;
return $sum % 10 == 0;
* Get the validation error message.
public function message(): string
return __('validate.credit-card');
milwad-dev /
laravel-validate
