php smtp实现发送邮件功能

本文实例为大家讲解了php smtp发送邮件功能的具体代码，供大家参考，具体内容如下

debug = FALSE;
  $this->smtp_port = $smtp_port;
  $this->relay_host = $relay_host;
  $this->time_out = 30; //is used in fsockopen() 
  $this->auth = $auth;//auth
  $this->user = $user;
  $this->pass = $pass;
  $this->host_name = "localhost"; //is used in HELO mand 
  $this->log_file = "";
  $this->sock = FALSE;
}
 
 
 function sendmail($to, $from, $subject = "", $body = "", $mailtype, $ = "", $b = "", $additional_headers = "")
 {
  $mail_from = $this->get_address($this->strip_ment($from));
  $body = preg_replace("/(^|(rn))(.)/", "1.3", $body);
  $header = "MIME-Version:1.0rn";
  if($mailtype=="HTML")
  {
   $header .= "Content-Type:text/htmlrn";
  }
  $header .= "To: ".$to."rn";
  if ($ != "") 
  {
   $header .= "Cc: ".$."rn";
  }
  $header .= "From: $from<".$from.">rn";
  $header .= "Subject: ".$subject."rn";
  $header .= $additional_headers;
  $header .= "Date: ".date("r")."rn";
  $header .= "X-Mailer:By Redhat (PHP/".phpversion().")rn";
  list($msec, $sec) = explode(" ", microtime());
  $header .= "Message-ID: <".date("YmdHis", $sec).".".($msec1000000).".".$mail_from.">rn";
  $TO = explode(",", $this->strip_ment($to));
 
  if ($ != "") 
  {
   $TO = array_merge($TO, explode(",", $this->strip_ment($)));
   }
  if ($b != "") 
  {
   $TO = array_merge($TO, explode(",", $this->strip_ment($b)));
  }
  $sent = TRUE;
  foreach ($TO as $rcpt_to) 
  {
   $rcpt_to = $this->get_address($rcpt_to);
   if (!$this->smtp_sockopen($rcpt_to)) 
   {
 $this->log_rite("Error: Cannot send email to ".$rcpt_to."n");
 $sent = FALSE;
 continue;
   }
   if ($this->smtp_send($this->host_name, $mail_from, $rcpt_to, $header, $body)) 
   {
 $this->log_rite("E-mail has been sent to <".$rcpt_to.">n");
   } 
   else 
   {
 $this->log_rite("Error: Cannot send email to <".$rcpt_to.">n");
 $sent = FALSE;
   }
   fclose($this->sock);
   $this->log_rite("Disconnected from remote hostn");
  }
  return $sent;
 }
 
 
 function smtp_send($helo, $from, $to, $header, $body = "")
 {
  if (!$this->smtp_putcmd("HELO", $helo)) 
  {
   return $this->smtp_error("sending HELO mand");
  }
 
  #auth
  if($this->auth)
  {
   if (!$this->smtp_putcmd("AUTH LOGIN", base64_encode($this->user))) 
   {
 return $this->smtp_error("sending HELO mand");
   }
   if (!$this->smtp_putcmd("", base64_encode($this->pass))) 
   {
 return $this->smtp_error("sending HELO mand");
   }
  }
  if (!$this->smtp_putcmd("MAIL", "FROM:<".$from.">")) 
  {
   return $this->smtp_error("sending MAIL FROM mand");
  }
  if (!$this->smtp_putcmd("RCPT", "TO:<".$to.">")) 
  {
   return $this->smtp_error("sending RCPT TO mand");
  }
  if (!$this->smtp_putcmd("DATA"))
  {
   return $this->smtp_error("sending DATA mand");
  }
  if (!$this->smtp_message($header, $body)) 
  {
   return $this->smtp_error("sending message");
  }
  if (!$this->smtp_eom())
  {
   return $this->smtp_error("sending . [EOM]");
  }
  if (!$this->smtp_putcmd("QUIT")) 
  {
   return $this->smtp_error("sending QUIT mand");
  }
  return TRUE;
 }
 
 function smtp_sockopen($address)
 {
  if ($this->relay_host == "") 
  {
   return $this->smtp_sockopen_mx($address);
  } 
  else
  {
   return $this->smtp_sockopen_relay();
  }
 }
 
 function smtp_sockopen_relay()
 {
  $this->log_rite("Trying to ".$this->relay_host.":".$this->smtp_port."n");
  $this->sock = @fsockopen($this->relay_host, $this->smtp_port, $errno, $errstr, $this->time_out);
  if (!($this->sock && $this->smtp_ok())) 
  {
   $this->log_rite("Error: Cannot connenct to relay host ".$this->relay_host."n");
   $this->log_rite("Error: ".$errstr." (".$errno.")n");
   return FALSE;
  }
  $this->log_rite("Connected to relay host ".$this->relay_host."n");
  return TRUE;;
 }
 
 function smtp_sockopen_mx($address)
 {
  $domain = preg_replace("^.+@([^@]+)$", "1", $address);
  if (!@getmxrr($domain, $MXHOSTS)) 
  {
   $this->log_rite("Error: Cannot resolve MX "".$domain.""n");
   return FALSE;
  }
  foreach ($MXHOSTS as $host) 
  {
   $this->log_rite("Trying to ".$host.":".$this->smtp_port."n");
   $this->sock = @fsockopen($host, $this->smtp_port, $errno, $errstr, $this->time_out);
   if (!($this->sock && $this->smtp_ok())) 
   {
 $this->log_rite("Warning: Cannot connect to mx host ".$host."n");
 $this->log_rite("Error: ".$errstr." (".$errno.")n");
 continue;
   }
   $this->log_rite("Connected to mx host ".$host."n");
   return TRUE;
  }
  $this->log_rite("Error: Cannot connect to any mx hosts (".implode(", ", $MXHOSTS).")n");
  return FALSE;
 }
 
 function smtp_message($header, $body)
 {
  fputs($this->sock, $header."rn".$body);
  $this->smtp_debug("> ".str_replace("rn", "n"."> ", $header."n> ".$body."n> "));
  return TRUE;
 }
 
 function smtp_eom()
 {
  fputs($this->sock, "rn.rn");
  $this->smtp_debug(". [EOM]n");
  return $this->smtp_ok();
 }
 
 function smtp_ok()
 {
  $response = str_replace("rn", "", fgets($this->sock, 512));
  $this->smtp_debug($response."n");
  if (!preg_match("/^[23]/", $response)) 
  {
   fputs($this->sock, "QUITrn");
   fgets($this->sock, 512);
   $this->log_rite("Error: Remote host returned "".$response.""n");
   return FALSE;
  }
  return TRUE;
 }
 
 function smtp_putcmd($cmd, $arg = "")
 {
  if ($arg != "") 
  {
   if($cmd=="") 
   {
 $cmd = $arg;
   }
   else
   {
 $cmd = $cmd." ".$arg;
   }
  }
  fputs($this->sock, $cmd."rn");
  $this->smtp_debug("> ".$cmd."n");
  return $this->smtp_ok();
 }
 
 function smtp_error($string)
 {
  $this->log_rite("Error: Error ourred hile ".$string.".n");
  return FALSE;
 }
 
 function log_rite($message)
 {
  $this->smtp_debug($message);
  if ($this->log_file == "")
  {
   return TRUE;
  }
  $message = date("M d H:i:s ").get_current_user()."[".getmypid()."]: ".$message;
  if (!@file_exists($this->log_file) || !($fp = @fopen($this->log_file, "a"))) 
  {
   $this->smtp_debug("Warning: Cannot open log file "".$this->log_file.""n");
   return FALSE;;
  }
  flock($fp, LOCK_EX);
  fputs($fp, $message);
  fclose($fp);
  return TRUE;
 }
 
 function strip_ment($address)
 {
  $ment = "/([^()])/";
  hile (preg_match($ment, $address)) 
  {
   $address = preg_replace($ment, "", $address);
  }
  return $address;
 }
 
 function get_address($address)
 {
  $address = preg_replace("/([ trn])+/", "", $address);
  $address = preg_replace("/^.<(.+)>.$/", "1", $address);
  return $address;
 }
 
 function smtp_debug($message)
 {
  if ($this->debug) 
  {
   echo $message;
  }
 }
 
}
?>

调用

debug = TRUE;
//发送邮件
$smtp->sendmail($smtpemailto, $smtpusermail, $mailsubject, $mailbody, $mailtype);
 
?>

代码链接

sendmail