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php a simple smtp class_PHP tutorial

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WBOYOriginal
2016-07-21 15:53:591057browse

smtp.class.php

Copy code The code is as follows:


define('SMTP_STATUS_NOT_CONNECTED', 1, TRUE); 
define('SMTP_STATUS_CONNECTED', 2, TRUE); 

class smtp 


var $connection; 
var $recipients; 
var $headers; 
var $timeout; 
var $errors; 
var $status; 
var $body; 
var $from; 
var $host; 
var $port; 
var $helo; 
var $auth; 
var $user; 
var $pass; 
var $debug; 

/**
* Parameter is an array
* host SMTP server host Default: localhost
* port SMTP server port Default: 25
* helo Name of sending HELO command Default: localhost
* user SMTP server username Default: NULL
* pass SMTP server login password Default: NULL
* timeout connection timeout time Default: 5
* @return bool
*/ 

function smtp($params = array()) 


if(!defined('CRLF')) define('CRLF', “rn”, TRUE); 

$this->timeout = 5; 
$this->status = SMTP_STATUS_NOT_CONNECTED; 
$this->host = ‘localhost'; 
$this->port = 25; 
$this->auth = FALSE; 
$this->user = ”; 
$this->pass = ”; 
$this->errors = array(); 
$this->debug = false; 
foreach($params as $key => $value) 

$this->$key = $value; 


$this->helo = $this->host; 

// 如果没有设置用户名则不验证 
$this->auth = (” == $this->user) ? FALSE : TRUE; 


function connect($params = array()) 


if(!isset($this->status)) 

$obj = new smtp($params); 

if($obj->connect()) 

$obj->status = SMTP_STATUS_CONNECTED; 


return $obj; 


else 


$this->connection = fsockopen($this->host, $this->port, $errno, $errstr, $this->timeout); 
socket_set_timeout($this->connection, 0, 250000); 

$greeting = $this->get_data(); 

if(is_resource($this->connection)) 

$this->status = 2; 
return $this->auth ? $this->ehlo() : $this->helo(); 

else 

$this->errors[] = ‘Failed to connect to server: ‘.$errstr; 
return FALSE; 




/**
* The parameter is an array
* recipients array of recipients
* from sender’s address, which will also be used as the reply address
* headers array of header information
* body body of the email
*/ 

function send($params = array()) 


foreach($params as $key => $value) 

$this->set($key, $value); 


if($this->is_connected()) 

// 服务器是否需要验证 
if($this->auth) 

if(!$this->auth()) return FALSE; 


$this->mail($this->from); 

if(is_array($this->recipients)) 

foreach($this->recipients as $value) 

$this->rcpt($value); 


else 

$this->rcpt($this->recipients); 


if(!$this->data()) return FALSE; 

$headers = str_replace(CRLF.'.', CRLF.'..', trim(implode(CRLF, $this->headers))); 
$body = str_replace(CRLF.'.', CRLF.'..', $this->body); 
$body = $body[0] == ‘.' ? ‘.'.$body : $body; 

$this->send_data($headers); 
$this->send_data(”); 
$this->send_data($body); 
$this->send_data('.'); 

return (substr(trim($this->get_data()), 0, 3) === ‘250′); 

else 

$this->errors[] = ‘Not connected!'; 
return FALSE; 



function helo() 

if(is_resource($this->connection) 
AND $this->send_data('HELO ‘.$this->helo) 
AND substr(trim($error = $this->get_data()), 0, 3) === ‘250′ ) 

return TRUE; 


else 

$this->errors[] = ‘HELO command failed, output: ‘ . trim(substr(trim($error),3)); 
return FALSE; 



function ehlo() 

if(is_resource($this->connection) 
AND $this->send_data('EHLO ‘.$this->helo) 
AND substr(trim($error = $this->get_data()), 0, 3) === ‘250′ ) 

return TRUE; 

else 

$this->errors[] = ‘EHLO command failed, output: ‘ . trim(substr(trim($error),3)); 
return FALSE; 



function auth() 

if(is_resource($this->connection) 
AND $this->send_data('AUTH LOGIN') 
AND substr(trim($error = $this->get_data()), 0, 3) === ‘334′ 
AND $this->send_data(base64_encode($this->user)) // Send username 
AND substr(trim($error = $this->get_data()),0,3) === ‘334′ 
AND $this->send_data(base64_encode($this->pass)) // Send password 
AND substr(trim($error = $this->get_data()),0,3) === ‘235′ ) 

return TRUE; 

else 

$this->errors[] = ‘AUTH command failed: ‘ . trim(substr(trim($error),3)); 
return FALSE; 



function mail($from) 


if($this->is_connected() 
AND $this->send_data('MAIL FROM:<'.$from.'>') 
AND substr(trim($this->get_data()), 0, 2) === ‘250′ ) 

return TRUE; 

else 

return FALSE; 



function rcpt($to) 

if($this->is_connected() 
AND $this->send_data('RCPT TO:<'.$to.'>') 
AND substr(trim($error = $this->get_data()), 0, 2) === ‘25′ ) 

return TRUE; 

else 

$this->errors[] = trim(substr(trim($error), 3)); 
return FALSE; 



function data() 


if($this->is_connected() 
AND $this->send_data('DATA') 
AND substr(trim($error = $this->get_data()), 0, 3) === ‘354′ ) 

return TRUE; 

else 

$this->errors[] = trim(substr(trim($error), 3)); 
return FALSE; 



function is_connected() 

return (is_resource($this->connection) AND ($this->status === SMTP_STATUS_CONNECTED)); 


function send_data($data) 

if(is_resource($this->connection)) 

if($this->debug) 
echo nl2br($data.CRLF); 
return fwrite($this->connection, $data.CRLF, strlen($data)+2); 

else 

return FALSE; 



function &get_data() 


$return = ”; 
$line = ”; 

if(is_resource($this->connection)) 

while(strpos($return, CRLF) === FALSE OR substr($line,3,1) !== ‘ ‘) 

$line = fgets($this->connection, 512); 
$return .= $line; 

if($this->debug===true) 
echo nl2br($return.CRLF); 
return $return; 


else 

return FALSE; 



function set($var, $value) 

$this->$var = $value; 
return TRUE; 

} // End of class 
?> 

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