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Verify email exists using code

Verify Email is Exists in real world or not ,Download Php code

Verify Email is Exists in real world or not ,Download Php code

Hi Geeks, As per need in one of my project, i have used following code for Check Email is Exists in real world or not . In this tutorial we have made a class for checking a email id is exists or not and also checking it is valid or not. and we have a example file also for calling the verify method. You can also download full source code from link given at bottom of the post. Step 1: Create a class with name ‘class.verifyEmail.php’ having following code snippet. * @copyright Copyright (c) 2015, w3school.info */ class verifyEmail { protected $stream = false; /** * SMTP port number * @var int */ protected $port = 25; /** * email address for request * @var string */ protected $from = 'root@localhost'; /** * The connection timeout, in seconds. * @var int */ protected $max_connection_timeout = 30; /** * Timeout value on stream, in seconds. * @var int */ protected $stream_timeout = 5; /** * Wait timeout on stream, in seconds. * * 0 - not wait * @var int */ protected $stream_timeout_wait = 0; /** * Whether to throw exceptions for errors. * @type boolean * @access protected */ protected $exceptions = false; /** * The number of errors encountered. * @type integer * @access protected */ protected $error_count = 0; /** * class debug output mode. * @type boolean */ public $Debug = false; /** * How to handle debug output. * Options: * * `echo` Output plain-text as-is, appropriate for CLI * * `html` Output escaped, line breaks converted to ``, appropriate for browser output * * `log` Output to error log as configured in php.ini * @type string */ public $Debugoutput = 'echo'; /** * SMTP RFC standard line ending. */ const CRLF = "\r\n"; /** * Holds the most recent error message. * @type string */ public $ErrorInfo = ''; /** * Constructor. * @param boolean $exceptions Should we throw external exceptions? */ public function __construct($exceptions = false) { $this->exceptions = (boolean) $exceptions; } /** * Set email address for SMTP request * @param string $email Email address */ public function setEmailFrom($email) { if (!self::validate($email)) { $this->set_error('Invalid address : ' . $email); $this->edebug($this->ErrorInfo); if ($this->exceptions) { throw new verifyEmailException($this->ErrorInfo); } } $this->from = $email; } /** * Set connection timeout, in seconds. * @param int $seconds */ public function setConnectionTimeout($seconds) { if ($seconds > 0) { $this->max_connection_timeout = (int) $seconds; } } /** * Sets the timeout value on stream, expressed in the seconds * @param int $seconds */ public function setStreamTimeout($seconds) { if ($seconds > 0) { $this->stream_timeout = (int) $seconds; } } public function setStreamTimeoutWait($seconds) { if ($seconds >= 0) { $this->stream_timeout_wait = (int) $seconds; } } /** * Validate email address. * @param string $email * @return boolean True if valid. */ public static function validate($email) { return (boolean) filter_var($email, FILTER_VALIDATE_EMAIL); } /** * Get array of MX records for host. Sort by weight information. * @param string $hostname The Internet host name. * @return array Array of the MX records found. */ public function getMXrecords($hostname) { $mxhosts = array(); $mxweights = array(); if (getmxrr($hostname, $mxhosts, $mxweights) === FALSE) { $this->set_error('MX records not found or an error occurred'); $this->edebug($this->ErrorInfo); } else { array_multisort($mxweights, $mxhosts); } /** * Add A-record as last chance (e.g. if no MX record is there). * Thanks Nicht Lieb. * @link http://www.faqs.org/rfcs/rfc2821.html RFC 2821 - Simple Mail Transfer Protocol */ if (empty($mxhosts)) { $mxhosts[] = $hostname; } return $mxhosts; } /** * Parses input string to array(0=>user, 1=>domain) * @param string $email * @param boolean $only_domain * @return string|array * @access private */ public static function parse_email($email, $only_domain = TRUE) { sscanf($email, "%[^@]@%s", $user, $domain); return ($only_domain) ? $domain : array($user, $domain); } /** * Add an error message to the error container. * @access protected * @param string $msg * @return void */ protected function set_error($msg) { $this->error_count++; $this->ErrorInfo = $msg; } /** * Check if an error occurred. * @access public * @return boolean True if an error did occur. */ public function isError() { return ($this->error_count > 0); } /** * Output debugging info * Only generates output if debug output is enabled * @see verifyEmail::$Debugoutput * @see verifyEmail::$Debug * @param string $str */ protected function edebug($str) { if (!$this->Debug) { return; } switch ($this->Debugoutput) { case 'log': //Don't output, just log error_log($str); break; case 'html': //Cleans up output a bit for a better looking, HTML-safe output echo htmlentities( preg_replace('/[\r\n]+/', '', $str), ENT_QUOTES, 'UTF-8' ) . "\n"; break; case 'echo': default: //Normalize line breaks $str = preg_replace('/(\r\n|\r|\n)/ms', "\n", $str); echo gmdate('Y-m-d H:i:s') . "\t" . str_replace( "\n", "\n \t ", trim($str) ) . "\n"; } } /** * check up e-mail * @param string $email Email address * @return boolean True if the valid email also exist */ public function check($email) { $result = FALSE; if (!self::validate($email)) { $this->set_error("{$email} incorrect e-mail"); $this->edebug($this->ErrorInfo); if ($this->exceptions) { throw new verifyEmailException($this->ErrorInfo); } return FALSE; } $this->error_count = 0; // Reset errors $this->stream = FALSE; $mxs = $this->getMXrecords(self::parse_email($email)); $timeout = ceil($this->max_connection_timeout / count($mxs)); foreach ($mxs as $host) { /** * suppress error output from stream socket client... * Thanks Michael. */ $this->stream = @stream_socket_client("tcp://" . $host . ":" . $this->port, $errno, $errstr, $timeout); if ($this->stream === FALSE) { if ($errno == 0) { $this->set_error("Problem initializing the socket"); $this->edebug($this->ErrorInfo); if ($this->exceptions) { throw new verifyEmailException($this->ErrorInfo); } return FALSE; } else { $this->edebug($host . ":" . $errstr); } } else { stream_set_timeout($this->stream, $this->stream_timeout); stream_set_blocking($this->stream, 1); if ($this->_streamCode($this->_streamResponse()) == '220') { $this->edebug("Connection success {$host}"); break; } else { fclose($this->stream); $this->stream = FALSE; } } } if ($this->stream === FALSE) { $this->set_error("All connection fails"); $this->edebug($this->ErrorInfo); if ($this->exceptions) { throw new verifyEmailException($this->ErrorInfo); } return FALSE; } $this->_streamQuery("HELO " . self::parse_email($this->from)); $this->_streamResponse(); $this->_streamQuery("MAIL FROM: from}>"); $this->_streamResponse(); $this->_streamQuery("RCPT TO: "); $code = $this->_streamCode($this->_streamResponse()); //$this->_streamResponse(); $this->_streamQuery("RSET"); //$this->_streamResponse(); $this->_streamQuery("QUIT"); fclose($this->stream); switch ($code) { case '250': /** * http://www.ietf.org/rfc/rfc0821.txt * 250 Requested mail action okay, completed * email address was accepted */ case '450': case '451': case '452': /** * http://www.ietf.org/rfc/rfc0821.txt * 450 Requested action not taken: the remote mail server * does not want to accept mail from your server for * some reason (IP address, blacklisting, etc..) * Thanks Nicht Lieb. * 451 Requested action aborted: local error in processing * 452 Requested action not taken: insufficient system storage * email address was greylisted (or some temporary error occured on the MTA) * i believe that e-mail exists */ return TRUE; default : return FALSE; } } /** * writes the contents of string to the file stream pointed to by handle * If an error occurs, returns FALSE. * @access protected * @param string $string The string that is to be written * @return string Returns a result code, as an integer. */ protected function _streamQuery($query) { $this->edebug($query); return stream_socket_sendto($this->stream, $query . self::CRLF); } /** * Reads all the line long the answer and analyze it. * If an error occurs, returns FALSE * @access protected * @return string Response */ protected function _streamResponse($timed = 0) { $reply = stream_get_line($this->stream, 1); $status = stream_get_meta_data($this->stream); if (!empty($status['timed_out'])) { $this->edebug("Timed out while waiting for data! (timeout {$this->stream_timeout} seconds)"); } if ($reply === FALSE && $status['timed_out'] && $timed stream_timeout_wait) { return $this->_streamResponse($timed + $this->stream_timeout); } if ($reply !== FALSE && $status['unread_bytes'] > 0) { $reply .= stream_get_line($this->stream, $status['unread_bytes'], self::CRLF); } $this->edebug($reply); return $reply; } /** * Get Response code from Response * @param string $str * @return string */ protected function _streamCode($str) { preg_match('/^(?[0-9]{3})(\s|-)(.*)$/ims', $str, $matches); $code = isset($matches['code']) ? $matches['code'] : false; return $code; }}/** * verifyEmail exception handler */ class verifyEmailException extends Exception { /** * Prettify error message output * @return string */ public function errorMessage() { //$errorMsg = '' . $this->getMessage() . "\n"; $errorMsg = $this->getMessage(); return $errorMsg; }}?>Step 2. Now you can call the method after including the above class in any php file as follow: setStreamTimeoutWait(20); $vmail->Debug= TRUE; $vmail->Debugoutput= 'html'; $vmail->setEmailFrom('[email protected]');//email which is used to set from headers,you can add your own/company email over here if ($vmail->check($email)) { echo 'email exist!'; } elseif (verifyEmail::validate($email)) { echo 'email valid, but not exist!'; } else { echo 'email not valid and not exist!'; } ?>Now This is our example file where we have passed the email to be check through url parameter and just got the value using GET/REQUEST using php So create a file index.php with following code CHECK EMAIL IS EXISTS LIVE OR NOT <?php include_once 'class.verifyEmail.php'; // $email = $_REQUEST['email']; //pass an email here to test // $vmail = new verifyEmail(); $vmail->setStreamTimeoutWait(20); $vmail->Debug= TRUE; $vmail->Debugoutput= 'html'; $vmail->setEmailFrom('[email protected]'); if ($vmail->check($email)) { echo '<h1>email <' . $email . '> exist!</h1>'; } elseif (verifyEmail::validate($email)) { echo '<h1>email <' . $email . '> valid, but not exist!</h1>'; } else { echo '<h1>email <' . $email . '> not valid and not exist!</h1>'; } ?> </body>STEP 3. Now check the email using url as following http://localhost/email_verify/[email protected] STEP 3. Now check the email using url as following localhost/email_verify/[email protected] Now you can see the output and able to detect email is valid or now see results output – email verify [viraldownloader id=165 text=’Download Source Code’]