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<?php namespace Aman\EmailVerifier; use Aman\EmailVerifier\Helpers\Helper; class EmailChecker { public $domian; public $details; public $result = ''; public $email_from = ''; /* ============================================================== This method will set from email address ============================================================== @return String */ public function setFromEmail($email_from) { if (filter_var($email_from, FILTER_VALIDATE_EMAIL)) { $this->email_from = $email_from; } else if (filter_var(env('EMAIL_CHECKER_SET_FROM'), FILTER_VALIDATE_EMAIL)) { $this->email_from = env('EMAIL_CHECKER_SET_FROM'); } else { $this->email_from = 'example@example.com'; } } /* ============================================================== This method will check all possibilities of email verification ============================================================== @return array */ public function checkEmail($email, $deepCheck = false) { $disposable = $mxrecord = $domain = array(); if (filter_var($email, FILTER_VALIDATE_EMAIL)) { // check for disposable email if ($this->checkDisposableEmail($email, $deepCheck) === true) { return [ 'success' => false, 'error' => 'Entered email address is disposable', ]; } else { $disposable = [ 'success' => true, 'detail' => 'Email address is not disposable', ]; } $verify = $this->checkMxAndDnsRecord($email); if ($verify[0] !== 'valid') { return [ 'success' => false, 'error' => 'Entered email address has no MX and DNS record.', ]; } else { $mxrecord = [ 'success' => true, 'detail' => $verify[1], ]; } if ($this->checkDomain($email) === false) { return [ 'success' => false, 'error' => 'Unable to verify email address.', ]; } else { $domain = [ 'success' => true, 'detail' => 'Domain is exist.', ]; } return [ 'success' => true, 'dispossable' => $disposable, 'mxrecord' => $mxrecord, 'domain' => $domain, ]; } else { return [ 'success' => false, 'error' => 'Please enter valid email address', ]; } } /* ===================================================== This method will only check for disposable emails ===================================================== @return true | false */ public function checkDisposableEmail($email, $deepCheck = false) { if (filter_var($email, FILTER_VALIDATE_EMAIL)) { $domain = $this->splitEmail($email); if (preg_match("/(ThrowAwayMail|DeadAddress|10MinuteMail|20MinuteMail|AirMail|Dispostable|Email Sensei|EmailThe|FilzMail|Guerrillamail|IncognitoEmail|Koszmail|Mailcatch|Mailinator|Mailnesia|MintEmail|MyTrashMail|NoClickEmail| SpamSpot|Spamavert|Spamfree24|TempEmail|Thrashmail.ws|Yopmail|EasyTrashMail|Jetable|MailExpire|MeltMail|Spambox|empomail|33Mail| E4ward|GishPuppy|InboxAlias|MailNull|Spamex|Spamgourmet|BloodyVikings|SpamControl|MailCatch|Tempomail|EmailSensei|Yopmail| Trasmail|Guerrillamail|Yopmail|boximail|ghacks|Maildrop|MintEmail|fixmail|gelitik.in|ag.us.to|mobi.web.id |fansworldwide.de|privymail.de|gishpuppy|spamevader|uroid|tempmail|soodo|deadaddress|trbvm)/i", $domain)) // Possiblities of domain name that can genrate dispossable emails COURTESY FORMGET { return true; } if ($deepCheck) { return Helper::deepCheck($domain); } else { return false; } } else { return false; } } /* ===================================================== This method will check for DNS and MX record of the email address domain. ===================================================== @return array with details */ public function checkMxAndDnsRecord($email) { if (empty($this->email_from)) { $this->setFromEmail(''); } if (filter_var($email, FILTER_VALIDATE_EMAIL)) { // Get the domain of the email recipient $detailsDesc = ''; $email_arr = explode('@', $email); $domain = array_slice($email_arr, -1); $domain = $domain[0]; // Trim [ and ] from beginning and end of domain string, respectively $domain = ltrim($domain, '['); $domain = rtrim($domain, ']'); if ('IPv6:' == substr($domain, 0, strlen('IPv6:'))) { $domain = substr($domain, strlen('IPv6') + 1); } $mxhosts = array(); // Check if the domain has an IP address assigned to it if (filter_var($domain, FILTER_VALIDATE_IP)) { $mx_ip = $domain; } else { // If no IP assigned, get the MX records for the host name getmxrr($domain, $mxhosts, $mxweight); } if (!empty($mxhosts)) { $mx_ip = $mxhosts[array_search(min($mxweight), $mxhosts)]; } else { // If MX records not found, get the A DNS records for the host if (filter_var($domain, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) { $record_a = dns_get_record($domain, DNS_A); // else get the AAAA IPv6 address record } elseif (filter_var($domain, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) { $record_a = dns_get_record($domain, DNS_AAAA); } if (!empty($record_a)) { $mx_ip = $record_a[0]['ip']; } else { // Exit the program if no MX records are found for the domain host $result = 'invalid'; $details = 'No suitable MX records found.'; return array($result, $details); } } // Open a socket connection with the hostname, smtp port 25 try { if ($connect = @fsockopen($mx_ip, 25, $errno, $errstr, 5)) { // Initiate the Mail Sending SMTP transaction if (preg_match('/^220/i', $out = fgets($connect, 1024))) { // Send the HELO command to the SMTP server fputs($connect, "HELO $mx_ip\r\n"); $out = fgets($connect, 1024); $detailsDesc .= $out . "\n"; // Send an SMTP Mail command from the sender's email address fputs($connect, "MAIL FROM: <" . $this->email_from . ">\r\n"); $from = fgets($connect, 1024); $detailsDesc .= $from . "\n"; // Send the SCPT command with the recepient's email address fputs($connect, "RCPT TO: <$email>\r\n"); $to = fgets($connect, 1024); $detailsDesc .= $to . "\n"; // Close the socket connection with QUIT command to the SMTP server fputs($connect, 'QUIT'); fclose($connect); // The expected response is 250 if the email is valid if (!preg_match('/^250/i', $from) || !preg_match('/^250/i', $to)) { $result = 'invalid'; $details = 'Invalid email address'; } else { $result = 'valid'; $details = 'Valid email address'; } } else { $result = 'valid'; $details = 'MX record found but could not connect to server'; } } else { $result = 'valid'; $details = 'MX record found but could not connect to server'; } } catch (Exception $e) { $result = 'valid'; $details = 'MX record found but could not connect to server'; } return array($result, $details); } else { $result = 'invalid'; $details = 'Validation error email address.'; return array($result, $details); } } /* ===================================================== This method will check if domain exist or not using curl. ===================================================== @return true | false */ public function checkDomain($email) { if (filter_var($email, FILTER_VALIDATE_EMAIL)) { $domain = 'http://' . $this->splitEmail($email); $httpcode = $this->goCurl($domain); if ($httpcode === 301) { $domain = 'https://' . $this->splitEmail($email); $httpcode = $this->goCurl($domain); } if ($httpcode >= 200 && $httpcode < 300) { return true; } else { return false; } } else { return false; } } /* ===================================================== This method will split domain from email address ===================================================== @return domain */ private function splitEmail($email) { return substr(strrchr($email, "@"), 1); } private function goCurl($domain) { $init = curl_init($domain); curl_setopt($init, CURLOPT_TIMEOUT, 5); curl_setopt($init, CURLOPT_CONNECTTIMEOUT, 5); curl_setopt($init, CURLOPT_RETURNTRANSFER, true); curl_setopt($init, CURLOPT_FOLLOWLOCATION, true); curl_setopt($init, CURLOPT_MAXREDIRS, 3); curl_exec($init); $httpcode = curl_getinfo($init, CURLINFO_HTTP_CODE); curl_close($init); return $httpcode; } }
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