'.htmlentities($str).''; } } } set_time_limit(0); //清空並關閉輸出緩存 ob_end_clean(); flush(); //將輸出發送給客戶端瀏覽器 $mail_list = "add.txt"; $fp = fopen($mail_list,'r'); while(!feof($fp)){ $list[] = trim(fgets($fp)); } //$email = '[email protected]'; // an optional sender $sender = '[email protected]'; // instantiate the class $SMTP_Validator = new SMTP_validateEmail(); // turn on debugging if you want to view the SMTP transaction $SMTP_Validator->debug = true; // do the validation foreach($list as $k=>$who){ if($who != ''){ $results = $SMTP_Validator->validate(array($who),$sender); // view results //echo 'ok'; echo $who.' 是'.($results[$who] ? '有效的' :'無效的')."\n"; if($results[$who]){ file_put_contents('result.txt',$who. "\r\n", FILE_APPEND); } // send email? if ($results[$who]) { //mail($email, 'Confirm Email', 'Please reply to this email to confirm', 'From:'.$sender."\r\n"); // send email } else { //file_put_contents('result.txt',$who. "\r\n", FILE_APPEND); //echo 'The email addresses you entered is not valid'; } } }
php驗證郵件地址的有效性
SMTP和STMP命令
具體SMTP指令問題不做深究 有興趣者可參考http://www.magicwinmail.com/technic_smtp.php
Smtp(Simple Mail Transfer
Protocol)協議是爲保證電子郵件的可靠和高效傳輸，TCP/IP協議的應用層中包含有SMTP協議，但是事實上其與傳輸系統和機制無關，只要一個
可靠的數據流通道，該協議可以工作在TCP上，也可以工作在NCP,NITS等協議上，在TCP上，其使用端口25進行傳輸。STMP的重要特點是可以交
互的通信系統中傳發郵件。
SMTP提供了一種郵件傳輸的機制，當接受方和發送方都種子 一
個網絡上時，可以把郵件直接傳給對方，當雙方不在同一網絡上時，需要通過一個或幾個中間服務器轉發。STMP首先由發送方提供聲請，要求與控接方SMTP
建立雙向通道，接收方可以是最後接件人也可以是中間轉發的服務器，接收服務器確認可以建立連接後，雙發就可以開始通信。
發送方SMTP向接受方發出Mail命令，告知發送方的身份，如果回答OK。發送方再發出RCPT命令，告知收件人的身份，接收方SMTP確認是否接收或轉發，如果同意就回答OK,接下來幾可以進程數據傳輸拉。
那SMTP 的命令是什麼拉？STMP中定義15個命令，其中SMTP工作的基本的命令有7個，HELO,MAILFROM,RCPT TO,DATA,REST,NOOP和QUIT;
下面我們介紹一下這幾個命令：
HELO：發送方問候接收方，後面是發件人的服務器地址或標誌；
MAILFROM：開始發送郵件，起後面跟隨發送郵件發送方 的地址；
RCPT TO：接受方收件人的郵箱
DATA：接收方把把該命令之後的數據作爲發送數據；
REST：接收方復位；
NOOP：這個命令不影響任何參數，只是要求接收回答OK,不會影響緩衝區的數據；
OUIT；SMTP要求接受方需要回答OK;然後中斷傳輸在接到這個命令並回答OK前，接受方不得中斷連接，即使傳輸出現錯誤。
setEmails($emails);
}
if ($sender) {
$this->setSenderEmail($sender);
}
}
//解析郵箱地址
function _parseEmail($email)
{
$parts = explode('@', $email);
$domain = array_pop($parts);
$user= implode('@', $parts);
return array($user, $domain);
}
/**
* 設置受事郵件地址
* @param $emails Array List of Emails
*/
function setEmails($emails)
{
foreach ($emails as $email) {
list($user, $domain) = $this->_parseEmail($email);
if (!isset($this->domains[$domain])) {
$this->domains[$domain] = array();
}
$this->domains[$domain][] = $user;
}
}
/**
* Set the Email of the sender/validator
* @param $email String
*/
function setSenderEmail($email)
{
$parts = $this->_parseEmail($email);
$this->from_user = $parts[0];//郵箱地址
$this->from_domain = $parts[1];//郵箱域名
}
/**
* Validate Email Addresses
* @param String $emails Emails to validate (recipientemails)
* @param String $sender Sender's Email
* @return Array Associative List of Emails and theirvalidation results
*/
function validate($emails = false, $sender = false)
{
$results = array();
if ($emails) {
//設置受事郵件地址
$this->setEmails($emails);
}
if ($sender) {
//設置發信人
$this->setSenderEmail($sender);
}
// query the MTAs on each Domain
foreach($this->domains as $domain=>$users) {
$mxs = array();
// current domain being queried
$this->domain = $domain;
// retrieve SMTP Server via MX query on domain
list($hosts, $mxweights) = $this->queryMX($domain);
// retrieve MX priorities
for($n = 0; $n < count($hosts); $n++){
$mxs[$hosts[$n]] = $mxweights[$n];
}
asort($mxs);
// last fallback is the original domain
$mxs[$this->domain] = 0;
$this->debug(print_r($mxs, 1));
$timeout = $this->max_conn_time;
// try each host
while(list($host) = each($mxs)) {
// 用fsockopen鏈接受事地址STMP服務器
$this->debug("try $host:$this->port\n");
if ($this->sock = fsockopen($host, $this->port, $errno, $errstr, (float) $timeout)) {
stream_set_timeout($this->sock, $this->max_read_time);
break;
}
}
//did we get a TCP socket
if ($this->sock) {
$reply = fread($this->sock, 2082);
$this->debug("<<<\n$reply");
preg_match('/^([0-9]{3}) /ims', $reply,$matches);
$code = isset($matches[1]) ? $matches[1] : '';
if($code != '220') {
// MTA gave an error...
foreach($users as $user) {
$results[$user.'@'.$domain] = false;
}
continue;
}
// say helo
$this->send("HELO ".$this->from_domain);
// tell of sender
$this->send("MAIL FROM: <".$this->from_user.'@'.$this->from_domain.">");
// ask for each recepient on this domain
foreach($users as $user) {
// ask of recepient 請求受事郵件地址
$reply = $this->send("RCPT TO: <".$user.'@'.$domain.">");
// get code and msg from response 獲得返回碼
preg_match('/^([0-9]{3}) /ims', $reply,$matches);
$code = isset($matches[1]) ? $matches[1] : '';
if ($code == '250') {
// you received 250 so the email address was accepted 250表示已收信
$results[$user.'@'.$domain] =true;
}
elseif ($code == '451' || $code == '452') {
// you received 451 so the email address was greylisted (or some temporary error occured on the MTA) - so assume is ok
$results[$user.'@'.$domain] =true;
}
else {
$results[$user.'@'.$domain] =false;
}
}
// reset before quit
$this->send("RSET");
// quit
$this->send("quit");
// close socket
fclose($this->sock);
}
}
return $results;
}
//向受事服務器發送指令
function send($msg) {
fwrite($this->sock, $msg."\r\n");
$reply = fread($this->sock, 2082);
$this->debug("END\n$msg\n");
$this->debug("START\n$reply");
return $reply;
}
/**
* Query DNS server for MX entries getmxrr()函數取得指定網址 DNS 記錄之 MX 字段。
* @return
*/
function queryMX($domain) {
$hosts = array();
$mxweights = array();
if (function_exists('getmxrr')) {
getmxrr($domain, $hosts, $mxweights);
}
else {
// windows, we need Net_DNS
require_once 'Net/DNS.php';
$resolver = new Net_DNS_Resolver();
$resolver->debug = $this->debug;
// nameservers to query
$resolver->nameservers = $this->nameservers;
$resp = $resolver->query($domain, 'MX');
if ($resp) {
foreach($resp->answer as $answer) {
$hosts[] = $answer->exchange;
$mxweights[] = $answer->preference;
}
}
}
return array($hosts, $mxweights);
}
/**
* Simple function to replicate PHP 5 behaviour.http://php.net/microtime
*/
function microtime_float()
{
list($usec, $sec) = explode(" ", microtime());
return ((float)$usec + (float)$sec);
}
function debug($str)
{
if ($this->debug) {
echo '
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