PHP SMTP::connected方法代码示例

 /**
  * Close the active SMTP session if one exists.
  * @return void
  */
 public function smtpClose()
 {
     if (is_a($this->smtp, 'SMTP')) {
         if ($this->smtp->connected()) {
             $this->smtp->quit();
             $this->smtp->close();
         }
     }
 }

 /**
  * Close the active SMTP session if one exists.
  * @return void
  */
 public function smtpClose()
 {
     if ($this->smtp !== null) {
         if ($this->smtp->connected()) {
             $this->smtp->quit();
             $this->smtp->close();
         }
     }
 }

 /**
  * Initiate a connection to an SMTP server.
  * Returns false if the operation failed.
  * @param array $options An array of options compatible with stream_context_create()
  * @uses SMTP
  * @access public
  * @throws phpmailerException
  * @return boolean
  */
 public function smtpConnect($options = array())
 {
     if (is_null($this->smtp)) {
         $this->smtp = $this->getSMTPInstance();
     }
     // Already connected?
     if ($this->smtp->connected()) {
         return true;
     }
     $this->smtp->setTimeout($this->Timeout);
     $this->smtp->setDebugLevel($this->SMTPDebug);
     $this->smtp->setDebugOutput($this->Debugoutput);
     $this->smtp->setVerp($this->do_verp);
     $hosts = explode(';', $this->Host);
     $lastexception = null;
     foreach ($hosts as $hostentry) {
         $hostinfo = array();
         if (!preg_match('/^((ssl|tls):\\/\\/)*([a-zA-Z0-9\\.-]*):?([0-9]*)$/', trim($hostentry), $hostinfo)) {
             // Not a valid host entry
             continue;
         }
         // $hostinfo[2]: optional ssl or tls prefix
         // $hostinfo[3]: the hostname
         // $hostinfo[4]: optional port number
         // The host string prefix can temporarily override the current setting for SMTPSecure
         // If it's not specified, the default value is used
         $prefix = '';
         $secure = $this->SMTPSecure;
         $tls = $this->SMTPSecure == 'tls';
         if ('ssl' == $hostinfo[2] or '' == $hostinfo[2] and 'ssl' == $this->SMTPSecure) {
             $prefix = 'ssl://';
             $tls = false;
             // Can't have SSL and TLS at the same time
             $secure = 'ssl';
         } elseif ($hostinfo[2] == 'tls') {
             $tls = true;
             // tls doesn't use a prefix
             $secure = 'tls';
         }
         //Do we need the OpenSSL extension?
         $sslext = defined('OPENSSL_ALGO_SHA1');
         if ('tls' === $secure or 'ssl' === $secure) {
             //Check for an OpenSSL constant rather than using extension_loaded, which is sometimes disabled
             if (!$sslext) {
                 throw new phpmailerException($this->lang('extension_missing') . 'openssl', self::STOP_CRITICAL);
             }
         }
         $host = $hostinfo[3];
         $port = $this->Port;
         $tport = (int) $hostinfo[4];
         if ($tport > 0 and $tport < 65536) {
             $port = $tport;
         }
         if ($this->smtp->connect($prefix . $host, $port, $this->Timeout, $options)) {
             try {
                 if ($this->Helo) {
                     $hello = $this->Helo;
                 } else {
                     $hello = $this->serverHostname();
                 }
                 $this->smtp->hello($hello);
                 //Automatically enable TLS encryption if:
                 // * it's not disabled
                 // * we have openssl extension
                 // * we are not already using SSL
                 // * the server offers STARTTLS
                 if ($this->SMTPAutoTLS and $sslext and $secure != 'ssl' and $this->smtp->getServerExt('STARTTLS')) {
                     $tls = true;
                 }
                 if ($tls) {
                     if (!$this->smtp->startTLS()) {
                         throw new phpmailerException($this->lang('connect_host'));
                     }
                     // We must resend HELO after tls negotiation
                     $this->smtp->hello($hello);
                 }
                 if ($this->SMTPAuth) {
                     if (!$this->smtp->authenticate($this->Username, $this->Password, $this->AuthType, $this->Realm, $this->Workstation)) {
                         throw new phpmailerException($this->lang('authenticate'));
                     }
                 }
                 return true;
             } catch (phpmailerException $exc) {
                 $lastexception = $exc;
                 $this->edebug($exc->getMessage());
                 // We must have connected, but then failed TLS or Auth, so close connection nicely
                 $this->smtp->quit();
             }
         }
     }
     // If we get here, all connection attempts have failed, so close connection hard
//.........这里部分代码省略.........