code:https://github.com/haoleiqin/PHP_Email_OneFile/tree/main

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<?php

class Email
{
/**
* @param Type reqData["title"] 邮件subject 主题
* @param Type reqData["content"] 邮件内容
* @param Type reqData["fromname"] 发件人姓名
* @param Type reqData["receiver"] 收件人邮箱
* @return boolean 发送成功会返回true,失败false
*/
public function qqComMailSend($reqData = null)
{
if (empty($reqData)) {
$reqData = $_REQUEST;
}
$mail = new Lib_Smtp();
$PHPMailer = array(
'host' => 'smtp.exmail.qq.com',//qq邮箱使用smtp.qq.com,qq企业邮箱使用smtp.exmail.qq.com
'username' => 'abc@abc.com',//邮箱登陆账号
'password' => '123456',//邮箱登陆密码,也有可能是独立密码,就是开启pop3/smtp时的授权码
'port' => 465,//默认25,腾云服务器屏蔽25端口,所以用的465
'ssl' => true,//是否开启ssl,用465就得开启
'from' => 'abc@abc.com'//发件人
);
$reqData["fromname"] = $reqData["fromname"]?$reqData["fromname"]:$PHPMailer["from"];
$mail->setServer($PHPMailer["host"], $PHPMailer["username"], $PHPMailer["password"], $PHPMailer["port"], $PHPMailer["ssl"]);
$mail->setFrom($PHPMailer["from"]); //发送者邮箱
$mail->setFromName($reqData["fromname"]); //发送者姓名
$mail->setReceiver($reqData["receiver"]); //接收者邮箱
//$mail->addAttachment(""); //Attachment 附件
$mail->setMail($reqData["title"], $reqData["content"]); //标题和内容
return $mail->send();
}
}

class Lib_Smtp
{
/**
* @var string 邮件传输代理用户名
* @access private
*/
private $_userName;

/**
* @var string 邮件传输代理密码
* @access private
*/
private $_password;

/**
* @var string 邮件传输代理服务器地址
* @access private
*/
private $_sendServer;

/**
* @var int 邮件传输代理服务器端口
* @access private
*/
private $_port;

/**
* @var string 发件人
* @access protected
*/
protected $_from;

/**
* @var string 发件人姓名
* @access protected
*/
protected $_from_name;

/**
* @var string 收件人
* @access protected
*/
protected $_to;

/**
* @var string 抄送
* @access protected
*/
protected $_cc;

/**
* @var string 秘密抄送
* @access protected
*/
protected $_bcc;

/**
* @var string 主题
* @access protected
*/
protected $_subject;

/**
* @var string 邮件正文
* @access protected
*/
protected $_body;

/**
* @var string 附件
* @access protected
*/
protected $_attachment;

/**
* @var reource socket资源
* @access protected
*/
protected $_socket;

/**
* @var reource 是否是安全连接
* @access protected
*/
protected $_isSecurity;

/**
* @var string 错误信息
* @access protected
*/
protected $_errorMessage;

protected $_debug = false;
/*输出调试信息*/
private function debug($msg)
{
if ($this->_debug) {
echo $msg, '<br>', "\n";
}
}
public function setDebug($val = true)
{
$this->_debug = $val;
}

/**
* 设置邮件传输代理,如果是可以匿名发送有邮件的服务器,只需传递代理服务器地址就行
* @access public
* @param string $server 代理服务器的ip或者域名
* @param string $username 认证账号
* @param string $password 认证密码
* @param int $port 代理服务器的端口,smtp默认25号端口
* @param boolean $isSecurity 到服务器的连接是否为安全连接,默认false
* @return boolean
*/
public function setServer($server, $username = "", $password = "", $port = 25, $isSecurity = false)
{
$this->_sendServer = $server;
$this->_port = $port;
$this->_isSecurity = $isSecurity;
$this->_userName = empty($username) ? "" : base64_encode($username);
$this->_password = empty($password) ? "" : base64_encode($password);
return true;
}

/**
* 设置发件人
* @access public
* @param string $from 发件人地址
* @return boolean
*/
public function setFrom($from)
{
$this->_from = $from;
return true;
}

/**
* 设置发件人姓名
* @access public
* @param string $from 发件人地址
* @return boolean
*/
public function setFromName($fromName)
{
$this->_from_name = $fromName;
return true;
}


/**
* 设置收件人,多个收件人,调用多次.
* @access public
* @param string $to 收件人地址
* @return boolean
*/
public function setReceiver($to)
{
if (isset($this->_to)) {
if (is_string($this->_to)) {
$this->_to = array($this->_to);
$this->_to[] = $to;
return true;
} elseif (is_array($this->_to)) {
$this->_to[] = $to;
return true;
} else {
return false;
}
} else {
$this->_to = $to;
return true;
}
}

/**
* 设置抄送,多个抄送,调用多次.
* @access public
* @param string $cc 抄送地址
* @return boolean
*/
public function setCc($cc)
{
if (isset($this->_cc)) {
if (is_string($this->_cc)) {
$this->_cc = array($this->_cc);
$this->_cc[] = $cc;
return true;
} elseif (is_array($this->_cc)) {
$this->_cc[] = $cc;
return true;
} else {
return false;
}
} else {
$this->_cc = $cc;
return true;
}
}

/**
* 设置秘密抄送,多个秘密抄送,调用多次
* @access public
* @param string $bcc 秘密抄送地址
* @return boolean
*/
public function setBcc($bcc)
{
if (isset($this->_bcc)) {
if (is_string($this->_bcc)) {
$this->_bcc = array($this->_bcc);
$this->_bcc[] = $bcc;
return true;
} elseif (is_array($this->_bcc)) {
$this->_bcc[] = $bcc;
return true;
} else {
return false;
}
} else {
$this->_bcc = $bcc;
return true;
}
}

/**
* 设置邮件附件,多个附件,调用多次
* @access public
* @param string $file 文件地址
* @return boolean
*/
public function addAttachment($file)
{
if (!file_exists($file)) {
$this->_errorMessage = "file " . $file . " does not exist.";
return false;
}
if (isset($this->_attachment)) {
if (is_string($this->_attachment)) {
$this->_attachment = array($this->_attachment);
$this->_attachment[] = $file;
return true;
} elseif (is_array($this->_attachment)) {
$this->_attachment[] = $file;
return true;
} else {
return false;
}
} else {
$this->_attachment = $file;
return true;
}
}

/**
* 设置邮件信息
* @access public
* @param string $body 邮件主题
* @param string $subject 邮件主体内容,可以是纯文本,也可是是HTML文本
* @return boolean
*/
public function setMail($subject, $body)
{
$this->_subject = $subject;
$this->_body = base64_encode($body);
return true;
}

/**
* 发送邮件
* @access public
* @return boolean
*/
public function send()
{
$command = $this->getCommand();

$this->_isSecurity ? $this->socketSecurity() : $this->socket();

foreach ($command as $value) {
$result = $this->_isSecurity ? $this->sendCommandSecurity($value[0], $value[1]) : $this->sendCommand($value[0], $value[1]);
if ($result) {
continue;
} else {
return false;
}
}

//其实这里也没必要关闭,smtp命令:QUIT发出之后,服务器就关闭了连接,本地的socket资源会自动释放
$this->_isSecurity ? $this->closeSecutity() : $this->close();
return true;
}

/**
* 返回错误信息
* @return string
*/
public function error()
{
if (!isset($this->_errorMessage)) {
$this->_errorMessage = "";
}
return $this->_errorMessage;
}

/**
* 返回mail命令
* @access protected
* @return array
*/
protected function getCommand()
{
$separator = "----=_Part_" . md5($this->_from . time()) . uniqid(); //分隔符

$command = array(
array("HELO sendmail\r\n", 250)
);
if (!empty($this->_userName)) {
$command[] = array("AUTH LOGIN\r\n", 334);
$command[] = array($this->_userName . "\r\n", 334);
$command[] = array($this->_password . "\r\n", 235);
}

//设置发件人
$command[] = array("MAIL FROM: <" . $this->_from . ">\r\n", 250);
$fromname_command = "";
if(!empty($this->_from_name)){
$fromname_command = " =?utf-8?B?". base64_encode($this->_from_name)."?= ";
}
$header = "FROM:".$fromname_command." <" . $this->_from . ">\r\n";

//设置收件人
if (is_array($this->_to)) {
$count = count($this->_to);
for ($i = 0; $i < $count; $i++) {
$command[] = array("RCPT TO: <" . $this->_to[$i] . ">\r\n", 250);
if ($i == 0) {
$header .= "TO: <" . $this->_to[$i] . ">";
} elseif ($i + 1 == $count) {
$header .= ",<" . $this->_to[$i] . ">\r\n";
} else {
$header .= ",<" . $this->_to[$i] . ">";
}
}
} else {
$command[] = array("RCPT TO: <" . $this->_to . ">\r\n", 250);
$header .= "TO: <" . $this->_to . ">\r\n";
}

//设置抄送
if (isset($this->_cc)) {
if (is_array($this->_cc)) {
$count = count($this->_cc);
for ($i = 0; $i < $count; $i++) {
$command[] = array("RCPT TO: <" . $this->_cc[$i] . ">\r\n", 250);
if ($i == 0) {
$header .= "CC: <" . $this->_cc[$i] . ">";
} elseif ($i + 1 == $count) {
$header .= ",<" . $this->_cc[$i] . ">\r\n";
} else {
$header .= ",<" . $this->_cc[$i] . ">";
}
}
} else {
$command[] = array("RCPT TO: <" . $this->_cc . ">\r\n", 250);
$header .= "CC: <" . $this->_cc . ">\r\n";
}
}

//设置秘密抄送
if (isset($this->_bcc)) {
if (is_array($this->_bcc)) {
$count = count($this->_bcc);
for ($i = 0; $i < $count; $i++) {
$command[] = array("RCPT TO: <" . $this->_bcc[$i] . ">\r\n", 250);
if ($i == 0) {
$header .= "BCC: <" . $this->_bcc[$i] . ">";
} elseif ($i + 1 == $count) {
$header .= ",<" . $this->_bcc[$i] . ">\r\n";
} else {
$header .= ",<" . $this->_bcc[$i] . ">";
}
}
} else {
$command[] = array("RCPT TO: <" . $this->_bcc . ">\r\n", 250);
$header .= "BCC: <" . $this->_bcc . ">\r\n";
}
}

//主题
$header .= "Subject: " . $this->_subject . "\r\n";
if (isset($this->_attachment)) {
//含有附件的邮件头需要声明成这个
$header .= "Content-Type: multipart/mixed;\r\n";
} elseif (false) {
//邮件体含有图片资源的需要声明成这个
$header .= "Content-Type: multipart/related;\r\n";
} else {
//html或者纯文本的邮件声明成这个
$header .= "Content-Type: multipart/alternative;\r\n";
}

//邮件头分隔符
$header .= "\t" . 'boundary="' . $separator . '"';
$header .= "\r\nMIME-Version: 1.0\r\n";
$header .= "\r\n--" . $separator . "\r\n";
$header .= "Content-Type:text/html; charset=utf-8\r\n";
$header .= "Content-Transfer-Encoding: base64\r\n\r\n";
$header .= $this->_body . "\r\n";
$header .= "--" . $separator . "\r\n";

//加入附件
if (isset($this->_attachment) && !empty($this->_attachment)) {
if (is_array($this->_attachment)) {
$count = count($this->_attachment);
for ($i = 0; $i < $count; $i++) {
$header .= "\r\n--" . $separator . "\r\n";
$header .= "Content-Type: " . $this->getMIMEType($this->_attachment[$i]) . '; name="' . basename($this->_attachment[$i]) . '"' . "\r\n";
$header .= "Content-Transfer-Encoding: base64\r\n";
$header .= 'Content-Disposition: attachment; filename="' . basename($this->_attachment[$i]) . '"' . "\r\n";
$header .= "\r\n";
$header .= $this->readFile($this->_attachment[$i]);
$header .= "\r\n--" . $separator . "\r\n";
}
} else {
$header .= "\r\n--" . $separator . "\r\n";
$header .= "Content-Type: " . $this->getMIMEType($this->_attachment) . '; name="' . basename($this->_attachment) . '"' . "\r\n";
$header .= "Content-Transfer-Encoding: base64\r\n";
$header .= 'Content-Disposition: attachment; filename="' . basename($this->_attachment) . '"' . "\r\n";
$header .= "\r\n";
$header .= $this->readFile($this->_attachment);
$header .= "\r\n--" . $separator . "\r\n";
}
}

//结束邮件数据发送
$header .= "\r\n.\r\n";


$command[] = array("DATA\r\n", 354);
$command[] = array($header, 250);
$command[] = array("QUIT\r\n", 221);

return $command;
}

/**
* 发送命令
* @access protected
* @param string $command 发送到服务器的smtp命令
* @param int $code 期望服务器返回的响应吗
* @return boolean
*/
protected function sendCommand($command, $code)
{
//debug('Send command:' . $command . ',expected code:' . $code );
//发送命令给服务器
try {
if (socket_write($this->_socket, $command, strlen($command))) {

//当邮件内容分多次发送时,没有$code,服务器没有返回
if (empty($code)) {
return true;
}

//读取服务器返回
$data = trim(socket_read($this->_socket, 1024));
//debug( 'response:' . $data);

if ($data) {
$pattern = "/^" . $code . "/";
if (preg_match($pattern, $data)) {
return true;
} else {
$this->_errorMessage = "Error:" . $data . "|**| command:";
return false;
}
} else {
$this->_errorMessage = "Error:" . socket_strerror(socket_last_error());
return false;
}
} else {
$this->_errorMessage = "Error:" . socket_strerror(socket_last_error());
return false;
}
} catch (Exception $e) {
$this->_errorMessage = "Error:" . $e->getMessage();
}
}

/**
* 发送命令
* @access protected
* @param string $command 发送到服务器的smtp命令
* @param int $code 期望服务器返回的响应吗
* @return boolean
*/
protected function sendCommandSecurity($command, $code)
{
//debug('Send command:' . $command . ',expected code:' . $code );
try {
if (fwrite($this->_socket, $command)) {
//当邮件内容分多次发送时,没有$code,服务器没有返回
if (empty($code)) {
return true;
}
//读取服务器返回
$data = trim(fread($this->_socket, 1024));
//debug( 'response:' . $data );

if ($data) {
$pattern = "/^" . $code . "/";
if (preg_match($pattern, $data)) {
return true;
} else {
$this->_errorMessage = "Error:" . $data . "|**| command:";
return false;
}
} else {
return false;
}
} else {
$this->_errorMessage = "Error: " . $command . " send failed";
return false;
}
} catch (Exception $e) {
$this->_errorMessage = "Error:" . $e->getMessage();
}
}

/**
* 读取附件文件内容,返回base64编码后的文件内容
* @access protected
* @param string $file 文件
* @return mixed
*/
protected function readFile($file)
{
if (file_exists($file)) {
$file_obj = file_get_contents($file);
return base64_encode($file_obj);
} else {
$this->_errorMessage = "file " . $file . " dose not exist";
return false;
}
}

/**
* 获取附件MIME类型
* @access protected
* @param string $file 文件
* @return mixed
*/
protected function getMIMEType($file)
{
if (file_exists($file)) {
$mime = mime_content_type($file);
if (!preg_match("/gif|jpg|png|jpeg/", $mime)) {
$mime = "application/octet-stream";
}
return $mime;
} else {
return false;
}
}

/**
* 建立到服务器的网络连接
* @access private
* @return boolean
*/
private function socket()
{
//创建socket资源
$this->_socket = socket_create(AF_INET, SOCK_STREAM, getprotobyname('tcp'));

if (!$this->_socket) {
$this->_errorMessage = socket_strerror(socket_last_error());
return false;
}

socket_set_block($this->_socket); //设置阻塞模式

//连接服务器
if (!socket_connect($this->_socket, $this->_sendServer, $this->_port)) {
$this->_errorMessage = socket_strerror(socket_last_error());
return false;
}
$str = socket_read($this->_socket, 1024);
if (!strpos($str, "220")) {
$this->_errorMessage = $str;
return false;
}

return true;
}

/**
* 建立到服务器的SSL网络连接
* @access private
* @return boolean
*/
private function socketSecurity()
{
$remoteAddr = "tcp://" . $this->_sendServer . ":" . $this->_port;
$this->_socket = stream_socket_client($remoteAddr, $errno, $errstr, 30);
if (!$this->_socket) {
$this->_errorMessage = $errstr;
return false;
}

//设置加密连接,默认是ssl,如果需要tls连接,可以查看php手册stream_socket_enable_crypto函数的解释
stream_socket_enable_crypto($this->_socket, true, STREAM_CRYPTO_METHOD_SSLv23_CLIENT);

stream_set_blocking($this->_socket, 1); //设置阻塞模式
$str = fread($this->_socket, 1024);
if (!strpos($str, "220")) {
$this->_errorMessage = $str;
return false;
}

return true;
}

/**
* 关闭socket
* @access private
* @return boolean
*/
private function close()
{
if (isset($this->_socket) && is_object($this->_socket)) {
$this->_socket->close();
return true;
}
$this->_errorMessage = "No resource can to be close";
return false;
}

/**
* 关闭安全socket
* @access private
* @return boolean
*/
private function closeSecutity()
{
if (isset($this->_socket) && is_object($this->_socket)) {
stream_socket_shutdown($this->_socket, STREAM_SHUT_WR);
return true;
}
$this->_errorMessage = "No resource can to be close";
return false;
}
}