IsoCodes\CreditCard::validate()

Complexity

Conditions	8
Paths	12

Size

Total Lines	38
Code Lines	20

Duplication

Lines	0
Ratio	0 %

Importance

Changes	5
Bugs	2	Features	0

<?php
    public static function validate($creditCard)
    {
        if (!is_string($creditCard) && !empty($creditCard)) {
            @trigger_error(

It seems like you do not handle an error condition here. This can introduce security issues, and is generally not recommended.

                'Passing other values than a string on '.__METHOD__.' is deprecated since version 2.2.'
                .' It will be considered as invalid on version 3.0.',
                E_USER_DEPRECATED
            );
        }

        // Add !is_string($creditCard) to the condition on 3.0.
        if (trim($creditCard) === '') {
            return false;
        }

        if (!boolval(preg_match('/.*[1-9].*/', $creditCard))) {
            return false;
        }

        //longueur de la chaine $creditCard
        $length = strlen($creditCard);

        //resultat de l'addition de tous les chiffres
        $tot = 0;
        for ($i = $length - 1; $i >= 0; --$i) {
            $digit = substr($creditCard, $i, 1);

            if ((($length - $i) % 2) == 0) {
                $digit = $digit * 2;
                if ($digit > 9) {
                    $digit = $digit - 9;
                }
            }
            $tot += (int) $digit;
        }

        return ($tot % 10) == 0;
    }
}