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.
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<?php /** * Class to check up e-mail * * @author W3school.info Admin <jeetu91.singh@gmail.com> * @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 `<br>`, 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' ) . "<br>\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(); $this->_streamQuery("MAIL FROM: <{$this->from}>"); $this->_streamResponse(); $this->_streamQuery("RCPT TO: <{$email}>"); $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 < $this->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('/^(?<code>[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 = '<strong>' . $this->getMessage() . "</strong><br />\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:
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<?php include_once 'class.verifyEmail.php'; // $email = "myfraud-email@gmail.com"//pass an email here to test // $vmail = new verifyEmail(); $vmail->setStreamTimeoutWait(20); $vmail->Debug= TRUE; $vmail->Debugoutput= 'html'; $vmail->setEmailFrom('info.cloudevils@gmail.com');//email which is used to set from headers,you can add your own/company email over here if ($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>'; } ?> |
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
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<?php set_time_limit(0); ?> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>CHECK EMAIL IS EXISTS LIVE OR NOT</title> </head> <body> <?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'; $vmail->setEmailFrom('info.cloudevils@gmail.com'); if ($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> </html> STEP 3. Now check the email using url as following http://localhost/email_verify/index.php?email=myemail@gmail.com |
STEP 3. Now check the email using url as following
localhost/email_verify/index.php?email=myemail@gmail.com
Now you can see the output and able to detect email is valid or now see results
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