AmmitPhp\Ammit\Domain\MailMxValidation

Complexity

Total Complexity

7

Size/Duplication

Total Lines	35
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	0

Importance

Changes

0

4 Methods

Rating	Name	Duplication	Size	Complexity
A	isEmailHostValid()	0	6	1
A	isEmailFormatValid()	0	9	2
A	isMxValid()	0	4	1
A	isHostValid()	0	4	3

<?php
declare(strict_types = 1);

namespace AmmitPhp\Ammit\Domain;

class MailMxValidation
{
    public function isEmailHostValid(string $emailAddress): bool
    {
        $host = substr($emailAddress, strrpos($emailAddress, '@') + 1);

        return $this->isHostValid($host);
    }

    public function isEmailFormatValid(string $emailAddress): bool
    {
        if (! filter_var($emailAddress, FILTER_VALIDATE_EMAIL)) {

This if statement, and the following return statement can be replaced with return (bool) filter_var($emailAddress, FILTER_VALIDATE_EMAIL);.

            return false;
        }

        return true;
    }

    /**
     * Check DNS Records for MX type.
     */
    private static function isMxValid(string $host): bool
    {
        return checkdnsrr($host, 'MX');
    }

    /**
     * Check if one of MX, A or AAAA DNS RR exists.
     */
    private function isHostValid(string $host): bool
    {
        return $this->isMxValid($host) || (checkdnsrr($host, 'A') || checkdnsrr($host, 'AAAA'));
    }
}