3 * PHPMailer RFC821 SMTP email transport class.
6 * @link https://github.com/PHPMailer/PHPMailer/ The PHPMailer GitHub project
7 * @author Marcus Bointon (Synchro/coolbru) <phpmailer@synchromedia.co.uk>
8 * @author Jim Jagielski (jimjag) <jimjag@gmail.com>
9 * @author Andy Prevost (codeworxtech) <codeworxtech@users.sourceforge.net>
10 * @author Brent R. Matzelle (original founder)
11 * @copyright 2014 Marcus Bointon
12 * @copyright 2010 - 2012 Jim Jagielski
13 * @copyright 2004 - 2009 Andy Prevost
14 * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
15 * @note This program is distributed in the hope that it will be useful - WITHOUT
16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
17 * FITNESS FOR A PARTICULAR PURPOSE.
21 * PHPMailer RFC821 SMTP email transport class.
22 * Implements RFC 821 SMTP commands and provides some utility methods for sending mail to an SMTP server.
25 * @author Marcus Bointon <phpmailer@synchromedia.co.uk>
30 * The PHPMailer SMTP version number.
33 const VERSION = '5.2.22';
36 * SMTP line break constant.
42 * The SMTP port to use if one is not specified.
45 const DEFAULT_SMTP_PORT = 25;
48 * The maximum line length allowed by RFC 2822 section 2.1.1
51 const MAX_LINE_LENGTH = 998;
54 * Debug level for no output
59 * Debug level to show client -> server messages
61 const DEBUG_CLIENT = 1;
64 * Debug level to show client -> server and server -> client messages
66 const DEBUG_SERVER = 2;
69 * Debug level to show connection status, client -> server and server -> client messages
71 const DEBUG_CONNECTION = 3;
74 * Debug level to show all messages
76 const DEBUG_LOWLEVEL = 4;
79 * The PHPMailer SMTP Version number.
81 * @deprecated Use the `VERSION` constant instead
84 public $Version = '5.2.22';
87 * SMTP server port number.
89 * @deprecated This is only ever used as a default value, so use the `DEFAULT_SMTP_PORT` constant instead
90 * @see SMTP::DEFAULT_SMTP_PORT
92 public $SMTP_PORT = 25;
95 * SMTP reply line ending.
97 * @deprecated Use the `CRLF` constant instead
100 public $CRLF = "\r\n";
103 * Debug output level.
105 * * self::DEBUG_OFF (`0`) No debug output, default
106 * * self::DEBUG_CLIENT (`1`) Client commands
107 * * self::DEBUG_SERVER (`2`) Client commands and server responses
108 * * self::DEBUG_CONNECTION (`3`) As DEBUG_SERVER plus connection status
109 * * self::DEBUG_LOWLEVEL (`4`) Low-level data output, all messages
112 public $do_debug = self::DEBUG_OFF;
115 * How to handle debug output.
117 * * `echo` Output plain-text as-is, appropriate for CLI
118 * * `html` Output escaped, line breaks converted to `<br>`, appropriate for browser output
119 * * `error_log` Output to error log as configured in php.ini
121 * Alternatively, you can provide a callable expecting two params: a message string and the debug level:
123 * $smtp->Debugoutput = function($str, $level) {echo "debug level $level; message: $str";};
125 * @var string|callable
127 public $Debugoutput = 'echo';
130 * Whether to use VERP.
131 * @link http://en.wikipedia.org/wiki/Variable_envelope_return_path
132 * @link http://www.postfix.org/VERP_README.html Info on VERP
135 public $do_verp = false;
138 * The timeout value for connection, in seconds.
139 * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2
140 * This needs to be quite high to function correctly with hosts using greetdelay as an anti-spam measure.
141 * @link http://tools.ietf.org/html/rfc2821#section-4.5.3.2
144 public $Timeout = 300;
147 * How long to wait for commands to complete, in seconds.
148 * Default of 5 minutes (300sec) is from RFC2821 section 4.5.3.2
151 public $Timelimit = 300;
154 * @var array patterns to extract smtp transaction id from smtp reply
155 * Only first capture group will be use, use non-capturing group to deal with it
156 * Extend this class to override this property to fulfil your needs.
158 protected $smtp_transaction_id_patterns = array(
159 'exim' => '/[0-9]{3} OK id=(.*)/',
160 'sendmail' => '/[0-9]{3} 2.0.0 (.*) Message/',
161 'postfix' => '/[0-9]{3} 2.0.0 Ok: queued as (.*)/'
165 * The socket for the server connection.
168 protected $smtp_conn;
171 * Error information, if any, for the last SMTP command.
174 protected $error = array(
182 * The reply the server sent to us for HELO.
183 * If null, no HELO string has yet been received.
186 protected $helo_rply = null;
189 * The set of SMTP extensions sent in reply to EHLO command.
190 * Indexes of the array are extension names.
191 * Value at index 'HELO' or 'EHLO' (according to command that was sent)
192 * represents the server name. In case of HELO it is the only element of the array.
193 * Other values can be boolean TRUE or an array containing extension options.
194 * If null, no HELO/EHLO string has yet been received.
197 protected $server_caps = null;
200 * The most recent reply received from the server.
203 protected $last_reply = '';
206 * Output debugging info via a user-selected method.
207 * @see SMTP::$Debugoutput
208 * @see SMTP::$do_debug
209 * @param string $str Debug string to output
210 * @param integer $level The debug level of this message; see DEBUG_* constants
213 protected function edebug($str, $level = 0)
215 if ($level > $this->do_debug) {
218 //Avoid clash with built-in function names
219 if (!in_array($this->Debugoutput, array('error_log', 'html', 'echo')) and is_callable($this->Debugoutput)) {
220 call_user_func($this->Debugoutput, $str, $level);
223 switch ($this->Debugoutput) {
225 //Don't output, just log
229 //Cleans up output a bit for a better looking, HTML-safe output
231 preg_replace('/[\r\n]+/', '', $str),
239 //Normalize line breaks
240 $str = preg_replace('/(\r\n|\r|\n)/ms', "\n", $str);
241 echo gmdate('Y-m-d H:i:s') . "\t" . str_replace(
250 * Connect to an SMTP server.
251 * @param string $host SMTP server IP or host name
252 * @param integer $port The port number to connect to
253 * @param integer $timeout How long to wait for the connection to open
254 * @param array $options An array of options for stream_context_create()
258 public function connect($host, $port = null, $timeout = 30, $options = array())
261 //This is enabled by default since 5.0.0 but some providers disable it
262 //Check this once and cache the result
263 if (is_null($streamok)) {
264 $streamok = function_exists('stream_socket_client');
266 // Clear errors to avoid confusion
268 // Make sure we are __not__ connected
269 if ($this->connected()) {
270 // Already connected, generate error
271 $this->setError('Already connected to a server');
275 $port = self::DEFAULT_SMTP_PORT;
277 // Connect to the SMTP server
279 "Connection: opening to $host:$port, timeout=$timeout, options=".var_export($options, true),
280 self::DEBUG_CONNECTION
285 $socket_context = stream_context_create($options);
286 set_error_handler(array($this, 'errorHandler'));
287 $this->smtp_conn = stream_socket_client(
292 STREAM_CLIENT_CONNECT,
295 restore_error_handler();
297 //Fall back to fsockopen which should work in more places, but is missing some features
299 "Connection: stream_socket_client not available, falling back to fsockopen",
300 self::DEBUG_CONNECTION
302 set_error_handler(array($this, 'errorHandler'));
303 $this->smtp_conn = fsockopen(
310 restore_error_handler();
312 // Verify we connected properly
313 if (!is_resource($this->smtp_conn)) {
315 'Failed to connect to server',
320 'SMTP ERROR: ' . $this->error['error']
321 . ": $errstr ($errno)",
326 $this->edebug('Connection: opened', self::DEBUG_CONNECTION);
327 // SMTP server can take longer to respond, give longer timeout for first read
328 // Windows does not have support for this timeout function
329 if (substr(PHP_OS, 0, 3) != 'WIN') {
330 $max = ini_get('max_execution_time');
331 // Don't bother if unlimited
332 if ($max != 0 && $timeout > $max) {
333 @set_time_limit($timeout);
335 stream_set_timeout($this->smtp_conn, $timeout, 0);
337 // Get any announcement
338 $announce = $this->get_lines();
339 $this->edebug('SERVER -> CLIENT: ' . $announce, self::DEBUG_SERVER);
344 * Initiate a TLS (encrypted) session.
348 public function startTLS()
350 if (!$this->sendCommand('STARTTLS', 'STARTTLS', 220)) {
354 //Allow the best TLS version(s) we can
355 $crypto_method = STREAM_CRYPTO_METHOD_TLS_CLIENT;
357 //PHP 5.6.7 dropped inclusion of TLS 1.1 and 1.2 in STREAM_CRYPTO_METHOD_TLS_CLIENT
358 //so add them back in manually if we can
359 if (defined('STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT')) {
360 $crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT;
361 $crypto_method |= STREAM_CRYPTO_METHOD_TLSv1_1_CLIENT;
364 // Begin encrypted connection
365 if (!stream_socket_enable_crypto(
376 * Perform SMTP authentication.
377 * Must be run after hello().
379 * @param string $username The user name
380 * @param string $password The password
381 * @param string $authtype The auth type (PLAIN, LOGIN, CRAM-MD5)
382 * @param string $realm The auth realm for NTLM
383 * @param string $workstation The auth workstation for NTLM
384 * @param null|OAuth $OAuth An optional OAuth instance (@see PHPMailerOAuth)
385 * @return bool True if successfully authenticated.* @access public
387 public function authenticate(
395 if (!$this->server_caps) {
396 $this->setError('Authentication is not allowed before HELO/EHLO');
400 if (array_key_exists('EHLO', $this->server_caps)) {
401 // SMTP extensions are available. Let's try to find a proper authentication method
403 if (!array_key_exists('AUTH', $this->server_caps)) {
404 $this->setError('Authentication is not allowed at this stage');
405 // 'at this stage' means that auth may be allowed after the stage changes
406 // e.g. after STARTTLS
410 self::edebug('Auth method requested: ' . ($authtype ? $authtype : 'UNKNOWN'), self::DEBUG_LOWLEVEL);
412 'Auth methods available on the server: ' . implode(',', $this->server_caps['AUTH']),
416 if (empty($authtype)) {
417 foreach (array('CRAM-MD5', 'LOGIN', 'PLAIN') as $method) {
418 if (in_array($method, $this->server_caps['AUTH'])) {
423 if (empty($authtype)) {
424 $this->setError('No supported authentication methods found');
427 self::edebug('Auth method selected: '.$authtype, self::DEBUG_LOWLEVEL);
430 if (!in_array($authtype, $this->server_caps['AUTH'])) {
431 $this->setError("The requested authentication method \"$authtype\" is not supported by the server");
434 } elseif (empty($authtype)) {
439 // Start authentication
440 if (!$this->sendCommand('AUTH', 'AUTH PLAIN', 334)) {
443 // Send encoded username and password
444 if (!$this->sendCommand(
446 base64_encode("\0" . $username . "\0" . $password),
454 // Start authentication
455 if (!$this->sendCommand('AUTH', 'AUTH LOGIN', 334)) {
458 if (!$this->sendCommand("Username", base64_encode($username), 334)) {
461 if (!$this->sendCommand("Password", base64_encode($password), 235)) {
466 // Start authentication
467 if (!$this->sendCommand('AUTH CRAM-MD5', 'AUTH CRAM-MD5', 334)) {
471 $challenge = base64_decode(substr($this->last_reply, 4));
473 // Build the response
474 $response = $username . ' ' . $this->hmac($challenge, $password);
476 // send encoded credentials
477 return $this->sendCommand('Username', base64_encode($response), 235);
479 $this->setError("Authentication method \"$authtype\" is not supported");
486 * Calculate an MD5 HMAC hash.
487 * Works like hash_hmac('md5', $data, $key)
488 * in case that function is not available
489 * @param string $data The data to hash
490 * @param string $key The key to hash with
494 protected function hmac($data, $key)
496 if (function_exists('hash_hmac')) {
497 return hash_hmac('md5', $data, $key);
500 // The following borrowed from
501 // http://php.net/manual/en/function.mhash.php#27225
503 // RFC 2104 HMAC implementation for php.
504 // Creates an md5 HMAC.
505 // Eliminates the need to install mhash to compute a HMAC
508 $bytelen = 64; // byte length for md5
509 if (strlen($key) > $bytelen) {
510 $key = pack('H*', md5($key));
512 $key = str_pad($key, $bytelen, chr(0x00));
513 $ipad = str_pad('', $bytelen, chr(0x36));
514 $opad = str_pad('', $bytelen, chr(0x5c));
515 $k_ipad = $key ^ $ipad;
516 $k_opad = $key ^ $opad;
518 return md5($k_opad . pack('H*', md5($k_ipad . $data)));
522 * Check connection state.
524 * @return boolean True if connected.
526 public function connected()
528 if (is_resource($this->smtp_conn)) {
529 $sock_status = stream_get_meta_data($this->smtp_conn);
530 if ($sock_status['eof']) {
531 // The socket is valid but we are not connected
533 'SMTP NOTICE: EOF caught while checking if connected',
539 return true; // everything looks good
545 * Close the socket and clean up the state of the class.
546 * Don't use this function without first trying to use QUIT.
551 public function close()
554 $this->server_caps = null;
555 $this->helo_rply = null;
556 if (is_resource($this->smtp_conn)) {
557 // close the connection and cleanup
558 fclose($this->smtp_conn);
559 $this->smtp_conn = null; //Makes for cleaner serialization
560 $this->edebug('Connection: closed', self::DEBUG_CONNECTION);
565 * Send an SMTP DATA command.
566 * Issues a data command and sends the msg_data to the server,
567 * finializing the mail transaction. $msg_data is the message
568 * that is to be send with the headers. Each header needs to be
569 * on a single line followed by a <CRLF> with the message headers
570 * and the message body being separated by and additional <CRLF>.
571 * Implements rfc 821: DATA <CRLF>
572 * @param string $msg_data Message data to send
576 public function data($msg_data)
578 //This will use the standard timelimit
579 if (!$this->sendCommand('DATA', 'DATA', 354)) {
583 /* The server is ready to accept data!
584 * According to rfc821 we should not send more than 1000 characters on a single line (including the CRLF)
585 * so we will break the data up into lines by \r and/or \n then if needed we will break each of those into
586 * smaller lines to fit within the limit.
587 * We will also look for lines that start with a '.' and prepend an additional '.'.
588 * NOTE: this does not count towards line-length limit.
591 // Normalize line breaks before exploding
592 $lines = explode("\n", str_replace(array("\r\n", "\r"), "\n", $msg_data));
594 /* To distinguish between a complete RFC822 message and a plain message body, we check if the first field
595 * of the first line (':' separated) does not contain a space then it _should_ be a header and we will
596 * process all lines before a blank line as headers.
599 $field = substr($lines[0], 0, strpos($lines[0], ':'));
601 if (!empty($field) && strpos($field, ' ') === false) {
605 foreach ($lines as $line) {
606 $lines_out = array();
607 if ($in_headers and $line == '') {
610 //Break this line up into several smaller lines if it's too long
611 //Micro-optimisation: isset($str[$len]) is faster than (strlen($str) > $len),
612 while (isset($line[self::MAX_LINE_LENGTH])) {
613 //Working backwards, try to find a space within the last MAX_LINE_LENGTH chars of the line to break on
614 //so as to avoid breaking in the middle of a word
615 $pos = strrpos(substr($line, 0, self::MAX_LINE_LENGTH), ' ');
616 //Deliberately matches both false and 0
618 //No nice break found, add a hard break
619 $pos = self::MAX_LINE_LENGTH - 1;
620 $lines_out[] = substr($line, 0, $pos);
621 $line = substr($line, $pos);
623 //Break at the found point
624 $lines_out[] = substr($line, 0, $pos);
625 //Move along by the amount we dealt with
626 $line = substr($line, $pos + 1);
628 //If processing headers add a LWSP-char to the front of new line RFC822 section 3.1.1
630 $line = "\t" . $line;
633 $lines_out[] = $line;
635 //Send the lines to the server
636 foreach ($lines_out as $line_out) {
637 //RFC2821 section 4.5.2
638 if (!empty($line_out) and $line_out[0] == '.') {
639 $line_out = '.' . $line_out;
641 $this->client_send($line_out . self::CRLF);
645 //Message data has been sent, complete the command
646 //Increase timelimit for end of DATA command
647 $savetimelimit = $this->Timelimit;
648 $this->Timelimit = $this->Timelimit * 2;
649 $result = $this->sendCommand('DATA END', '.', 250);
651 $this->Timelimit = $savetimelimit;
656 * Send an SMTP HELO or EHLO command.
657 * Used to identify the sending server to the receiving server.
658 * This makes sure that client and server are in a known state.
659 * Implements RFC 821: HELO <SP> <domain> <CRLF>
661 * @param string $host The host name or IP to connect to
665 public function hello($host = '')
667 //Try extended hello first (RFC 2821)
668 return (boolean)($this->sendHello('EHLO', $host) or $this->sendHello('HELO', $host));
672 * Send an SMTP HELO or EHLO command.
673 * Low-level implementation used by hello()
675 * @param string $hello The HELO string
676 * @param string $host The hostname to say we are
680 protected function sendHello($hello, $host)
682 $noerror = $this->sendCommand($hello, $hello . ' ' . $host, 250);
683 $this->helo_rply = $this->last_reply;
685 $this->parseHelloFields($hello);
687 $this->server_caps = null;
693 * Parse a reply to HELO/EHLO command to discover server extensions.
694 * In case of HELO, the only parameter that can be discovered is a server name.
696 * @param string $type - 'HELO' or 'EHLO'
698 protected function parseHelloFields($type)
700 $this->server_caps = array();
701 $lines = explode("\n", $this->helo_rply);
703 foreach ($lines as $n => $s) {
704 //First 4 chars contain response code followed by - or space
705 $s = trim(substr($s, 4));
709 $fields = explode(' ', $s);
710 if (!empty($fields)) {
713 $fields = $fields[0];
715 $name = array_shift($fields);
718 $fields = ($fields ? $fields[0] : 0);
721 if (!is_array($fields)) {
729 $this->server_caps[$name] = $fields;
735 * Send an SMTP MAIL command.
736 * Starts a mail transaction from the email address specified in
737 * $from. Returns true if successful or false otherwise. If True
738 * the mail transaction is started and then one or more recipient
739 * commands may be called followed by a data command.
740 * Implements rfc 821: MAIL <SP> FROM:<reverse-path> <CRLF>
741 * @param string $from Source address of this message
745 public function mail($from)
747 $useVerp = ($this->do_verp ? ' XVERP' : '');
748 return $this->sendCommand(
750 'MAIL FROM:<' . $from . '>' . $useVerp,
756 * Send an SMTP QUIT command.
757 * Closes the socket if there is no error or the $close_on_error argument is true.
758 * Implements from rfc 821: QUIT <CRLF>
759 * @param boolean $close_on_error Should the connection close if an error occurs?
763 public function quit($close_on_error = true)
765 $noerror = $this->sendCommand('QUIT', 'QUIT', 221);
766 $err = $this->error; //Save any error
767 if ($noerror or $close_on_error) {
769 $this->error = $err; //Restore any error from the quit command
775 * Send an SMTP RCPT command.
776 * Sets the TO argument to $toaddr.
777 * Returns true if the recipient was accepted false if it was rejected.
778 * Implements from rfc 821: RCPT <SP> TO:<forward-path> <CRLF>
779 * @param string $address The address the message is being sent to
783 public function recipient($address)
785 return $this->sendCommand(
787 'RCPT TO:<' . $address . '>',
793 * Send an SMTP RSET command.
794 * Abort any transaction that is currently in progress.
795 * Implements rfc 821: RSET <CRLF>
797 * @return boolean True on success.
799 public function reset()
801 return $this->sendCommand('RSET', 'RSET', 250);
805 * Send a command to an SMTP server and check its return code.
806 * @param string $command The command name - not sent to the server
807 * @param string $commandstring The actual command to send
808 * @param integer|array $expect One or more expected integer success codes
810 * @return boolean True on success.
812 protected function sendCommand($command, $commandstring, $expect)
814 if (!$this->connected()) {
815 $this->setError("Called $command without being connected");
818 //Reject line breaks in all commands
819 if (strpos($commandstring, "\n") !== false or strpos($commandstring, "\r") !== false) {
820 $this->setError("Command '$command' contained line breaks");
823 $this->client_send($commandstring . self::CRLF);
825 $this->last_reply = $this->get_lines();
826 // Fetch SMTP code and possible error code explanation
828 if (preg_match("/^([0-9]{3})[ -](?:([0-9]\\.[0-9]\\.[0-9]) )?/", $this->last_reply, $matches)) {
830 $code_ex = (count($matches) > 2 ? $matches[2] : null);
831 // Cut off error code from each response line
832 $detail = preg_replace(
833 "/{$code}[ -]".($code_ex ? str_replace('.', '\\.', $code_ex).' ' : '')."/m",
838 // Fall back to simple parsing if regex fails
839 $code = substr($this->last_reply, 0, 3);
841 $detail = substr($this->last_reply, 4);
844 $this->edebug('SERVER -> CLIENT: ' . $this->last_reply, self::DEBUG_SERVER);
846 if (!in_array($code, (array)$expect)) {
848 "$command command failed",
854 'SMTP ERROR: ' . $this->error['error'] . ': ' . $this->last_reply,
865 * Send an SMTP SAML command.
866 * Starts a mail transaction from the email address specified in $from.
867 * Returns true if successful or false otherwise. If True
868 * the mail transaction is started and then one or more recipient
869 * commands may be called followed by a data command. This command
870 * will send the message to the users terminal if they are logged
871 * in and send them an email.
872 * Implements rfc 821: SAML <SP> FROM:<reverse-path> <CRLF>
873 * @param string $from The address the message is from
877 public function sendAndMail($from)
879 return $this->sendCommand('SAML', "SAML FROM:$from", 250);
883 * Send an SMTP VRFY command.
884 * @param string $name The name to verify
888 public function verify($name)
890 return $this->sendCommand('VRFY', "VRFY $name", array(250, 251));
894 * Send an SMTP NOOP command.
895 * Used to keep keep-alives alive, doesn't actually do anything
899 public function noop()
901 return $this->sendCommand('NOOP', 'NOOP', 250);
905 * Send an SMTP TURN command.
906 * This is an optional command for SMTP that this class does not support.
907 * This method is here to make the RFC821 Definition complete for this class
908 * and _may_ be implemented in future
909 * Implements from rfc 821: TURN <CRLF>
913 public function turn()
915 $this->setError('The SMTP TURN command is not implemented');
916 $this->edebug('SMTP NOTICE: ' . $this->error['error'], self::DEBUG_CLIENT);
921 * Send raw data to the server.
922 * @param string $data The data to send
924 * @return integer|boolean The number of bytes sent to the server or false on error
926 public function client_send($data)
928 $this->edebug("CLIENT -> SERVER: $data", self::DEBUG_CLIENT);
929 return fwrite($this->smtp_conn, $data);
933 * Get the latest error.
937 public function getError()
943 * Get SMTP extensions available on the server
947 public function getServerExtList()
949 return $this->server_caps;
953 * A multipurpose method
954 * The method works in three ways, dependent on argument value and current state
955 * 1. HELO/EHLO was not sent - returns null and set up $this->error
957 * $name = 'HELO': returns server name
958 * $name = 'EHLO': returns boolean false
959 * $name = any string: returns null and set up $this->error
961 * $name = 'HELO'|'EHLO': returns server name
962 * $name = any string: if extension $name exists, returns boolean True
963 * or its options. Otherwise returns boolean False
964 * In other words, one can use this method to detect 3 conditions:
965 * - null returned: handshake was not or we don't know about ext (refer to $this->error)
966 * - false returned: the requested feature exactly not exists
967 * - positive value returned: the requested feature exists
968 * @param string $name Name of SMTP extension or 'HELO'|'EHLO'
971 public function getServerExt($name)
973 if (!$this->server_caps) {
974 $this->setError('No HELO/EHLO was sent');
978 // the tight logic knot ;)
979 if (!array_key_exists($name, $this->server_caps)) {
980 if ($name == 'HELO') {
981 return $this->server_caps['EHLO'];
983 if ($name == 'EHLO' || array_key_exists('EHLO', $this->server_caps)) {
986 $this->setError('HELO handshake was used. Client knows nothing about server extensions');
990 return $this->server_caps[$name];
994 * Get the last reply from the server.
998 public function getLastReply()
1000 return $this->last_reply;
1004 * Read the SMTP server's response.
1005 * Either before eof or socket timeout occurs on the operation.
1006 * With SMTP we can tell if we have more lines to read if the
1007 * 4th character is '-' symbol. If it is a space then we don't
1008 * need to read anything else.
1012 protected function get_lines()
1014 // If the connection is bad, give up straight away
1015 if (!is_resource($this->smtp_conn)) {
1020 stream_set_timeout($this->smtp_conn, $this->Timeout);
1021 if ($this->Timelimit > 0) {
1022 $endtime = time() + $this->Timelimit;
1024 while (is_resource($this->smtp_conn) && !feof($this->smtp_conn)) {
1025 $str = @fgets($this->smtp_conn, 515);
1026 $this->edebug("SMTP -> get_lines(): \$data is \"$data\"", self::DEBUG_LOWLEVEL);
1027 $this->edebug("SMTP -> get_lines(): \$str is \"$str\"", self::DEBUG_LOWLEVEL);
1029 // If 4th character is a space, we are done reading, break the loop, micro-optimisation over strlen
1030 if ((isset($str[3]) and $str[3] == ' ')) {
1033 // Timed-out? Log and break
1034 $info = stream_get_meta_data($this->smtp_conn);
1035 if ($info['timed_out']) {
1037 'SMTP -> get_lines(): timed-out (' . $this->Timeout . ' sec)',
1038 self::DEBUG_LOWLEVEL
1042 // Now check if reads took too long
1043 if ($endtime and time() > $endtime) {
1045 'SMTP -> get_lines(): timelimit reached ('.
1046 $this->Timelimit . ' sec)',
1047 self::DEBUG_LOWLEVEL
1056 * Enable or disable VERP address generation.
1057 * @param boolean $enabled
1059 public function setVerp($enabled = false)
1061 $this->do_verp = $enabled;
1065 * Get VERP address generation mode.
1068 public function getVerp()
1070 return $this->do_verp;
1074 * Set error messages and codes.
1075 * @param string $message The error message
1076 * @param string $detail Further detail on the error
1077 * @param string $smtp_code An associated SMTP error code
1078 * @param string $smtp_code_ex Extended SMTP code
1080 protected function setError($message, $detail = '', $smtp_code = '', $smtp_code_ex = '')
1082 $this->error = array(
1083 'error' => $message,
1084 'detail' => $detail,
1085 'smtp_code' => $smtp_code,
1086 'smtp_code_ex' => $smtp_code_ex
1091 * Set debug output method.
1092 * @param string|callable $method The name of the mechanism to use for debugging output, or a callable to handle it.
1094 public function setDebugOutput($method = 'echo')
1096 $this->Debugoutput = $method;
1100 * Get debug output method.
1103 public function getDebugOutput()
1105 return $this->Debugoutput;
1109 * Set debug output level.
1110 * @param integer $level
1112 public function setDebugLevel($level = 0)
1114 $this->do_debug = $level;
1118 * Get debug output level.
1121 public function getDebugLevel()
1123 return $this->do_debug;
1128 * @param integer $timeout
1130 public function setTimeout($timeout = 0)
1132 $this->Timeout = $timeout;
1139 public function getTimeout()
1141 return $this->Timeout;
1145 * Reports an error number and string.
1146 * @param integer $errno The error number returned by PHP.
1147 * @param string $errmsg The error message returned by PHP.
1149 protected function errorHandler($errno, $errmsg)
1151 $notice = 'Connection: Failed to connect to server.';
1158 $notice . ' Error number ' . $errno . '. "Error notice: ' . $errmsg,
1159 self::DEBUG_CONNECTION
1164 * Will return the ID of the last smtp transaction based on a list of patterns provided
1165 * in SMTP::$smtp_transaction_id_patterns.
1166 * If no reply has been received yet, it will return null.
1167 * If no pattern has been matched, it will return false.
1168 * @return bool|null|string
1170 public function getLastTransactionID()
1172 $reply = $this->getLastReply();
1174 if (empty($reply)) {
1178 foreach($this->smtp_transaction_id_patterns as $smtp_transaction_id_pattern) {
1179 if(preg_match($smtp_transaction_id_pattern, $reply, $matches)) {