DnsHelper::existsMx() - Code Metrics - Inspection of "DnsHelper for email check #10 (#11)" - yiisoft/network-utilities - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 886a7d...b4be93 )

by Alexander

created 2019-11-12 18:02 UTC

DnsHelper::existsMx() A

↳ Parent: DnsHelper

Complexity

Conditions	4
Paths	6

Size

Total Lines	13
Code Lines	8

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	6
CRAP Score	4.25

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	4
eloc	8
c	1
b	0
f	0
nc	6
nop	1
dl	0
loc	13
ccs	6
cts	8
cp	0.75
crap	4.25
rs	10

<?php

namespace Yiisoft\NetworkUtilities;

class DnsHelper
{
    /**
     * @param string $hostname hostname without dot at end
     * @link https://bugs.php.net/bug.php?id=78008
     */
    public static function existsMx(string $hostname): bool
    {
        $hostname = rtrim($hostname, '.') . '.';
        try {
            if (!@dns_check_record($hostname, 'MX')) {
                return false;
            }
            $result = @dns_get_record($hostname, DNS_MX);
            return $result !== false && count($result) > 0;
        } catch (\Throwable $t) {
            // eg. name servers are not found https://github.com/yiisoft/yii2/issues/17602
        }
        return false;
    }

    /**
     * @link https://bugs.php.net/bug.php?id=78008
     */
    public static function existsA(string $hostname): bool
    {
        try {
            if (!@dns_check_record($hostname, 'A')) {
                return false;
            }
            $result = @dns_get_record($hostname, DNS_A);
            return $result !== false && count($result) > 0;
        } catch (\Throwable $t) {
            // eg. name servers are not found https://github.com/yiisoft/yii2/issues/17602
        }
        return false;
    }

    /**
     * @link https://tools.ietf.org/html/rfc5321#section-5
     */
    public static function acceptsEmails(string $hostnameOrEmail): bool
    {
        if (strpos($hostnameOrEmail, '@') !== false) {
            [$void, $hostnameOrEmail] = explode('@', $hostnameOrEmail, 2);
        }
        return self::existsMx($hostnameOrEmail) || self::existsA($hostnameOrEmail);
    }
}


1		<?php
2
3		namespace Yiisoft\NetworkUtilities;
4
5		class DnsHelper
6		{
7		/**
8		* @param string $hostname hostname without dot at end
9		* @link https://bugs.php.net/bug.php?id=78008
10		*/
11	2	public static function existsMx(string $hostname): bool
12		{
13	2	$hostname = rtrim($hostname, '.') . '.';
14		try {
15	2	if (!@dns_check_record($hostname, 'MX')) {
16	2	return false;
17		}
18	2	$result = @dns_get_record($hostname, DNS_MX);
19	2	return $result !== false && count($result) > 0;
20		} catch (\Throwable $t) {
21		// eg. name servers are not found https://github.com/yiisoft/yii2/issues/17602
22		}
23		return false;
24		}
25
26		/**
27		* @link https://bugs.php.net/bug.php?id=78008
28		*/
29	2	public static function existsA(string $hostname): bool
30		{
31		try {
32	2	if (!@dns_check_record($hostname, 'A')) {
33	2	return false;
34		}
35	1	$result = @dns_get_record($hostname, DNS_A);
36	1	return $result !== false && count($result) > 0;
37		} catch (\Throwable $t) {
38		// eg. name servers are not found https://github.com/yiisoft/yii2/issues/17602
39		}
40		return false;
41		}
42
43		/**
44		* @link https://tools.ietf.org/html/rfc5321#section-5
45		*/
46	1	public static function acceptsEmails(string $hostnameOrEmail): bool
47		{
48	1	if (strpos($hostnameOrEmail, '@') !== false) {
49	1	[$void, $hostnameOrEmail] = explode('@', $hostnameOrEmail, 2);
50		}
51	1	return self::existsMx($hostnameOrEmail) \|\| self::existsA($hostnameOrEmail);
52		}
53		}
54

yiisoft / network-utilities

Push — master ( 886a7d...b4be93 )

DnsHelper::existsMx() A

Complexity

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Duplication

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