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 5.20
1<?php
2
3declare(strict_types=1);
4
5namespace Celemas\Sire\Rule;
6
7use Celemas\Sire\Contract;
8use Celemas\Sire\Validation;
9use Override;
10
11/** @api */
12final class Email implements Contract\Rule
13{
14    public string $message {
15        get => '{label} must be a valid email address';
16    }
17
18    #[Override]
19    public function validate(Contract\Value $value, string ...$args): Contract\Validation
20    {
21        $email = filter_var(
22            trim((string) $value->value),
23            \FILTER_VALIDATE_EMAIL,
24        );
25
26        if ($email !== false && ($args[0] ?? null) === 'checkdns') {
27            [, $mailDomain] = explode('@', $email);
28
29            return Validation::from(checkdnsrr($mailDomain, 'MX'));
30        }
31
32        return Validation::from($email !== false);
33    }
34}