voku\helper\EmailCheck::isValid()

Complexity

Conditions	16
Paths	23

Size

Total Lines	61
Code Lines	34

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	29
CRAP Score	16.8148

Importance

Changes	6
Bugs	0	Features	1

<?php
  public static function isValid($email, $useExampleDomainCheck = false, $useTypoInDomainCheck = false, $useTemporaryDomainCheck = false, $useDnsCheck = false)
  {
    // make sure string length is limited to avoid DOS attacks
    if (!is_string($email) || strlen($email) >= 320 || strpos($email, ' ') !== false) {
      return false;
    } elseif (!preg_match('/^(.*<?)(.*)@(.*)(>?)$/', $email, $parts)) {
      return false;
    } else {

      $localFirst = $parts[1];
      $localSecond = $parts[2];
      $domain = $parts[3];

      if (function_exists('idn_to_ascii')) {

        $localFirst = idn_to_ascii($localFirst);
        $domain = idn_to_ascii($domain);

        if (!$localFirst) {
          $localFirst = $parts[1];
        }

      } else {
        $punycode = new Punycode();
        $localFirst = $punycode->encode($localFirst);
        $domain = $punycode->encode($domain);
      }

      $email = $localFirst . $localSecond . '@' . $domain . $parts[4];

      if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
        return false;
      } else {
        $valid = true;
      }

      if ($useExampleDomainCheck === true && self::isExampleDomain($domain) === true) {
        return false;
      }

      if ($useTypoInDomainCheck === true && self::isTypoInDomain($domain) === true) {
        return false;
      }

      if ($useTemporaryDomainCheck === true && self::isTemporaryDomain($domain) === true) {
        return false;
      }

      if ($useDnsCheck) {
        $dnsCheck = self::isDnsError($domain);

        if ($dnsCheck !== null) {
          return (boolean) $dnsCheck;
        }
      }

    }


    return $valid;
  }