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<?php |
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namespace Egulias\EmailValidator\Validation; |
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use Egulias\EmailValidator\EmailLexer; |
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use Egulias\EmailValidator\Exception\InvalidEmail; |
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use Egulias\EmailValidator\Warning\NoDNSMXRecord; |
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use Egulias\EmailValidator\Exception\NoDNSRecord; |
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class DNSCheckValidation implements EmailValidation |
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{ |
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/** |
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* @var array |
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*/ |
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private $warnings = []; |
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/** |
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* @var InvalidEmail |
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*/ |
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private $error; |
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public function __construct() |
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{ |
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if (!extension_loaded('intl')) { |
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throw new \LogicException(sprintf('The %s class requires the Intl extension.', __CLASS__)); |
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} |
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} |
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public function isValid($email, EmailLexer $emailLexer) |
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{ |
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// use the input to check DNS if we cannot extract something similar to a domain |
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$host = $email; |
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// Arguable pattern to extract the domain. Not aiming to validate the domain nor the email |
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if (false !== $lastAtPos = strrpos($email, '@')) { |
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$host = substr($email, $lastAtPos + 1); |
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} |
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return $this->checkDNS($host); |
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} |
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public function getError() |
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{ |
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return $this->error; |
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} |
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public function getWarnings() |
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{ |
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return $this->warnings; |
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} |
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protected function checkDNS($host) |
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{ |
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$host = rtrim(idn_to_ascii($host, IDNA_DEFAULT, INTL_IDNA_VARIANT_UTS46), '.') . '.'; |
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$Aresult = true; |
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$MXresult = checkdnsrr($host, 'MX'); |
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if (!$MXresult) { |
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$this->warnings[NoDNSMXRecord::CODE] = new NoDNSMXRecord(); |
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$Aresult = checkdnsrr($host, 'A') || checkdnsrr($host, 'AAAA'); |
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if (!$Aresult) { |
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$this->error = new NoDNSRecord(); |
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} |
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} |
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return $MXresult || $Aresult; |
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} |
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} |
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egulias /
EmailValidator
