Sending emails through curl smtp in php_PHP tutorial-PHP Tutorial-php.cn

Sending emails through curl smtp in php_PHP tutorial

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Release： 2016-07-21 15:19:15

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I googled first and found a lot of people asking related questions but no relevant answers. I couldn’t find any related classes in phpclasses, so I started to try curl
SMTP protocol
while looking at the relevant protocols of stmp. This can be found online. If you find many related examples, you can try using telnet to connect to the mail server

Copy the code The code is as follows:

 
$ telnet Email SMTP service address 25 
Trying email service IP address... 
Connected to Email SMTP service address. 
Escape character is '^]'. 
exchange email server addressMicrosoft ESMTP MAIL Service ready at Sat, 2 Jun 2012 15:02:12 +0800 
EHLO 127.0.0.1 
-exchange Email Server Address Hello [Email Service IP Address] 
-SIZE 
-PIPELINING 
-DSN 
-ENHANCEDSTATUSCODES 
-X-ANONYMOUSTLS 
-AUTH NTLM LOGIN 
-X-EXPS GSSAPI NTLM 
-8BITMIME 
-BINARYMIME 
-CHUNKING 
-XEXCH50 
 XRDST 
AUTH LOGIN 
VXNlcm5hbWU6 
Username (base64_encode) 
UGFzc3dvcmQ6 
Password (base64_encode) 
2.7.0 Authentication successful 
MAIL FROM: outbox address 
 2.1.0 Sender OK 
RCPT TO:Inbox address
2.1.5 Recipient OK 
DATA 
Start mail input; end with . 
To send Content (there are many related specifications here) 
. 
2.6.0 <0b476f30-3b96-4e3d-84d2-395a96d34000@exchange email server address> Queued mail for delivery 
QUIT 
 2.0.0 Service closing transmission channel 
Connection closed by foreign host. 

php test code:

Copy code Code As follows:

 
header("content-type:text/html;charset=utf-8"); 
$smtp = array( 
"url " => "Email SMTP server address", 
"port" => "Email SMTP server port", // Generally 25 
"username" => "Username", 
" password" => "Password", 
"from" => "Sending address", 
"to" => "Receiving address", 
"subject" => "Test Title", 
"body" => "Test the content" 
); 
$CRLF = "rn"; 
$test = ""; 
$curl = curl_init( ); 
curl_setopt($curl, CURLOPT_URL, $smtp['url']); 
curl_setopt($curl, CURLOPT_PORT, $smtp['port']); 
curl_setopt($curl, CURLOPT_TIMEOUT, 10); 
function inlineCode($str){ 
$str = trim($str); 
return $str?'=?UTF-8?B?'.base64_encode($str).' ?= ':''; 
} 
function buildHeader($headers){ 
$ret = ''; 
foreach($headers as $k=>$v){ 
 $ret.=$k.': '.$v."n"; 
} 
return $ret; 
} 
// 
$header = array( 
' Return-path'=>'<'.$smtp['from'].'>', 
'Date'=>date('r'), 
'From'=> '<'.$smtp['from'].'>', 
'MIME-Version'=>'1.0', 
'Subject'=>inlineCode($smtp['subject' ]), 
'To'=>$smtp['to'], 
'Content-Type'=>'text/html; charset=UTF-8; format=flowed', 
 'Content-Transfer-Encoding'=>'base64' 
); 
$data = buildHeader($header).$CRLF.chunk_split(base64_encode($smtp['body'])); 
 $content = "EHLO ".$smtp["url"].$CRLF; // Hello first
$content .= "AUTH LOGIN".$CRLF.base64_encode($smtp["username"]). $CRLF.base64_encode($smtp["password"]).$CRLF; // Verify login
$content .= "MAIL FROM:".$smtp["from"].$CRLF; // Sending address 
$content .= "RCPT TO:".$smtp["to"].$CRLF; // Recipient address
$content .= "DATA".$CRLF.$data.$CRLF." .".$CRLF; // Send content
$content .= "QUIT".$CRLF; // Exit
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true); // curl receives return data
curl_setopt ($curl, CURLOPT_CUSTOMREQUEST, $content); 
$test = curl_exec($curl); 
var_dump($test); 
echo "
rn"; 
var_dump( $content); 
// End
curl_close($curl); 

The above is just the tested php
Package testing + modification took nearly 6 hours to get the product code Compatible with fsockopen and curl
In the future, I will write an smtp class compatible with fsockopen and curl to simply send emails.