PHP MAIL SMTP 郵件發送
2022-12-12
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電子郵件是架設網站不可或缺的工具之一，多數人會用 PHPmailer 這個方便的類，但是網路上找到的教學，都是使用 composer 安裝的，因為我功力太弱了，搞了幾次都沒成功很快就放棄了，因為只是要簡單的發信功能，沒有要傳送附件功能， ECSHOP 中的發信程式支援 PHPmail 及 SMTP，也能用 HTML 格式的內文，對多數程式小白來說已經足夠，底下是所有的檔案內容...
mail.php
<?php
/**
* 郵件發送
*
* @param: $name[string] 接收人姓名
* @param: $email[string] 接收人郵件地址
* @param: $subject[string] 郵件標題
* @param: $content[string] 郵件內容
* @param: $type[int] 0 普通郵件， 1 HTML郵件
* @param: $notification[bool] true 要求回執， false 不用回執
*
* @return boolean
*/
function send_mail($name, $email, $subject, $content, $type = 1, $notification=false)
{
include_once "mail_config.php";
// 使用mail函式發送郵件
if ($mail_service == 0 && function_exists('mail'))
{
// 郵件的頭部資訊
$content_type = ($type == 0) ? 'Content-Type: text/plain; charset=' . $charset : 'Content-Type: text/html; charset=' . $charset;
$headers = array();
$headers[] = 'From: "' . '=?' . $charset . '?B?' . base64_encode($shop_name) . '?='.'" <' . $smtp_mail . '>';
$headers[] = $content_type . '; format=flowed';
if ($notification)
{
$headers[] = 'Disposition-Notification-To: ' . '=?' . $charset . '?B?' . base64_encode($shop_name) . '?='.'" <' . $smtp_mail . '>';
}
$res = @mail($email, '=?' . $charset . '?B?' . base64_encode($subject) . '?=', $content, implode("\r\n", $headers));
if (!$res)
{
$msg['message'] = '郵件發送失敗，請檢查您的郵件伺服器設置！';
$msg['status'] = false;
return $msg;
}
else
{
$msg['message'] = $email;
$msg['status'] = true;
return $msg;
}
}
// 使用smtp服務發送郵件
else
{
// 郵件的頭部資訊
$content_type = ($type == 0) ?
'Content-Type: text/plain; charset=' . $charset : 'Content-Type: text/html; charset=' . $charset;
$content = base64_encode($content);
$headers = array();
$headers[] = 'Date: ' . gmdate('D, j M Y H:i:s', time()+3600*8);
$headers[] = 'To: "' . '=?' . $charset . '?B?' . base64_encode($name) . '?=' . '" <' . $email. '>';
$headers[] = 'From: "' . '=?' . $charset . '?B?' . base64_encode($shop_name) . '?='.'" <' . $smtp_mail . '>';
$headers[] = 'Subject: ' . '=?' . $charset . '?B?' . base64_encode($subject) . '?=';
$headers[] = $content_type . '; format=flowed';
$headers[] = 'Content-Transfer-Encoding: base64';
$headers[] = 'Content-Disposition: inline';
if ($notification)
{
$headers[] = 'Disposition-Notification-To: ' . '=?' . $charset . '?B?' . base64_encode($shop_name) . '?='.'" <' . $smtp_mail . '>';
}
// 獲得郵件伺服器的參數設定
$params['host'] = $smtp_host;
$params['port'] = $smtp_port;
$params['user'] = $smtp_user;
$params['pass'] = $smtp_pass;
if (empty($params['host']) || empty($params['port']))
{
// 如果沒有設定主機和埠直接返回 false
$msg['message'] = '郵件伺服器設置資訊不完整';
$msg['status'] = false;
return $msg;
}
else
{
// 發送郵件
if (!function_exists('fsockopen'))
{
//如果fsockopen被禁用，直接返回
$msg['message'] = '伺服器已禁用 fsocketopen 函數。';
$msg['status'] = false;
return $msg;
}
include_once('smtp.php');
static $smtp;
$send_params['recipients'] = $email;
$send_params['headers'] = $headers;
$send_params['from'] = $smtp_mail;
$send_params['body'] = $content;
if (!isset($smtp))
{
$smtp = new smtp($params);
}
if ($smtp->connect() && $smtp->send($send_params))
{
$msg['message'] = $email;
$msg['status'] = true;
return $msg;
}
else
{
$err_msg = $smtp->error_msg();
if (empty($err_msg))
{
$err = '未知錯誤';
}
else
{
if (strpos($err_msg, 'Failed to connect to server') !== false)
{
$err = '無法連接到郵件伺服器'. $params['host'] . ':' . $params['port'];
}
else if (strpos($err_msg, 'AUTH command failed') !== false)
{
$err = '郵件伺服器驗證帳號或密碼不正確';
}
elseif (strpos($err_msg, 'bad sequence of commands') !== false)
{
$err = '伺服器拒絕發送該郵件';
}
else
{
$err = $err_msg;
}
}
$msg['message'] = $err;
$msg['status'] = false;
return $msg;
}
}
}
}
smtp.php
<?php
/**
* SMTP 郵件類
*/
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 $pass;
/**
* 參數為一個陣列
* host SMTP 伺服器的主機 預設：localhost
* port SMTP 伺服器的埠 預設：25
* helo 發送HELO命令的名稱 預設：localhost
* user SMTP 伺服器的帳號 預設：空值
* pass SMTP 伺服器的登陸密碼 預設：空值
* timeout 連線超時的時間 預設：5
* @return bool
*/
function __construct($params = array())
{
if (!defined('CRLF'))
{
define('CRLF', "\r\n", true);
}
$this->timeout = 10;
$this->status = SMTP_STATUS_NOT_CONNECTED;
$this->host = 'localhost';
$this->port = 25;
$this->auth = false;
$this->user = '';
$this->pass = '';
$this->errors = array();
foreach ($params AS $key => $value)
{
$this->$key = $value;
}
$this->helo = $this->host;
// 如果沒有設定帳號則不驗證
$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 $obj;
}
else
{
if (!empty($GLOBALS['_CFG']['smtp_ssl']))
{
$this->host = "ssl://" . $this->host;
}
$this->connection = @fsockopen($this->host, $this->port, $errno, $errstr, $this->timeout);
if ($this->connection === false)
{
$this->errors[] = 'Access is denied.';
return false;
}
@socket_set_timeout($this->connection, 0, 250000);
$greeting = $this->get_data();
if (is_resource($this->connection))
{
$this->status = 2;
return $this->auth ? $this->ehlo() : $this->helo();
}
else
{
log_write($errstr, __FILE__, __LINE__);
$this->errors[] = 'Failed to connect to server: ' . $errstr;
return false;
}
}
}
/**
* 參數為陣列
* recipients 接收人的陣列
* from 發件人的地址，也將作為回覆地址
* headers 頭部資訊的陣列
* body 郵件的主體
*/
function send($params = array())
{
foreach ($params AS $key => $value)
{
$this->$key = $value;
}
if ($this->is_connected())
{
// 伺服器是否需要驗證
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);
$body = substr($body, 0, 1) == '.' ? '.' . $body : $body;
$this->send_data($headers);
$this->send_data('');
$this->send_data($body);
$this->send_data('.');
return (substr($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 ' . $this->helo)
AND substr($error = $this->get_data(), 0, 3) === '250' )
{
return true;
}
else
{
$this->errors[] = 'HELO command failed, output: ' . trim(substr($error, 3));
return false;
}
}
function ehlo()
{
if (is_resource($this->connection)
AND $this->send_data('EHLO ' . $this->helo)
AND substr($error = $this->get_data(), 0, 3) === '250' )
{
return true;
}
else
{
$this->errors[] = 'EHLO command failed, output: ' . trim(substr($error, 3));
return false;
}
}
function auth()
{
if (is_resource($this->connection)
AND $this->send_data('AUTH LOGIN')
AND substr($error = $this->get_data(), 0, 3) === '334'
AND $this->send_data(base64_encode($this->user)) // Send username
AND substr($error = $this->get_data(),0,3) === '334'
AND $this->send_data(base64_encode($this->pass)) // Send password
AND substr($error = $this->get_data(),0,3) === '235' )
{
return true;
}
else
{
$this->errors[] = 'AUTH command failed: ' . trim(substr($error, 3));
return false;
}
}
function mail($from)
{
if ($this->is_connected()
AND $this->send_data('MAIL FROM:<' . $from . '>')
AND substr($this->get_data(), 0, 2) === '250' )
{
return true;
}
else
{
return false;
}
}
function rcpt($to)
{
if ($this->is_connected()
AND $this->send_data('RCPT TO:<' . $to . '>')
AND substr($error = $this->get_data(), 0, 2) === '25')
{
return true;
}
else
{
$this->errors[] = trim(substr($error, 3));
return false;
}
}
function data()
{
if ($this->is_connected()
AND $this->send_data('DATA')
AND substr($error = $this->get_data(), 0, 3) === '354' )
{
return true;
}
else
{
$this->errors[] = trim(substr($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))
{
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 $line{3} !== ' ')
{
$line = fgets($this->connection, 512);
$return .= $line;
}
return trim($return);
}
else
{
return '';
}
}
/**
* 獲得最後一個錯誤資訊
*
* @access public
* @return string
*/
function error_msg()
{
if (!empty($this->errors))
{
$len = count($this->errors) - 1;
return $this->errors[$len];
}
else
{
return '';
}
}
}
mail_config.php
<?php $smtp_host = 'localhost';// 郵件主機域名 預設:localhost $smtp_port = '25';// 連接埠(預設)，Gmail 456 $smtp_user = 'xxx@xxxxx.xxx'; // SMTP 帳號 $smtp_pass = '********';// SMTP 密碼 $mail_service = '1';// 寄件方式 1(SMTP) 或 0(PHP mail) $shop_name = '網站名稱';// 寄件者姓名或網站名稱 $smtp_mail = 'xxx@xxxxx.xxx';// 寄件者郵件地址 $charset = 'utf-8';// 郵件編碼
修改 mail_config.php 填入正確的郵件資訊
將 mail.php、smtp.php、mail_config.php 放在同一個資料夾內
調用方法：
發信時需要四個參數：
<?php
$name = '收件人姓名';
$email = '收件者信箱';
$subject = '郵件主旨';
$content = '郵件內文';
include_once "mail.php";
$msg = send_mail($name, $email, $subject, $content);
if($msg['status'] == true){
echo '<h1 style="color:green">'.$msg.' 發送成功!</h1>';
}else{
echo '<h1 style="color:red">'.$msg.'</h1>';
}
如果你對PHP MAIL SMTP 郵件發送有任何問題請到討論區發帖。