php uses pear_smtp to send emails, pear_smtp sends emails

PHP’s own mail function is a pain in the ass, and even after configuring sendmail under win, it still cannot send emails. Using third-party pear/mail can directly connect to the mail sending server through SMTP. Such as (smtp.163.com). There is no need to install sendmail or other similar software on this machine.
Make sure the PEAR Mail package is installed.

<&#63;php 
 require_once "vendor/autoload.php"; 
  
 $from = "test<test@163.com>"; 
 $to = "test <test@outlook.com>"; 
 $subject = "Hi!"; 
 $body = "Hi,\n\nHow are you&#63;"; 
  
 $host = "smtp.163.com"; 
$port = "25"; 
 $username = "test@163.com"; 
 $password = "test123"; 
  
 $headers = array ('From' => $from, 
  'To' => $to, 
  'Subject' => $subject); 
 $smtp = Mail::factory('smtp', 
  array ('host' => $host, 
   'port' => $port, 
   'auth' => true, 
  // 'debug'=>true, 
   'username' => $username, 
   'password' => $password)); 
  
 $mail = $smtp->send($to, $headers, $body); 
  
 if (PEAR::isError($mail)) { 
  echo("<p>" . $mail->getMessage() . "</p>"); 
 } else { 
  echo("<p>Message successfully sent!</p>"); 
 } 
 &#63;>

This is a non-encrypted method.
Most PHPer uses the mail function to send emails, but we can use other SMTP servers to send emails. It is recommended to use PEAR's mail package to send emails.

 $subject = "This mail is sent from SMTP.";
$mail_body = "This is the body of the mail which is sent using SMTP.";
$from = "From: From Name <fromaddress@xpertdeveloper.com>"; 
$to = "To: To Name <toaddress@xpertdeveloper.com>"; 
$receiver = "toaddress@xpertdeveloper.com"; 
 
// Setting up the headers
$headers["From"] = $from; 
$headers["To"] = $to; 
$headers["Subject"] = $subject; 
$headers["Reply-To"] = "reply@address.com"; 
$headers["Content-Type"] = "text/plain; charset=ISO-2022-JP"; 
$headers["Return-path"] = "returnpath@address.com"; 
 
// Setting up the SMTP setting
$smtp_info["host"] = "smtp.server.com"; 
$smtp_info["port"] = "25"; 
$smtp_info["auth"] = true; 
$smtp_info["username"] = "smtp_user"; 
$smtp_info["password"] = "smtp_password"; 
 
// Creating the PEAR mail object :
$mail_obj =& Mail::factory("smtp", $smtp_info); 
 
// Sending the mail now
$mail_sent = $mail_obj->send($receiver, $headers, $mail_body); 
 
// If any error the see for that here:
if (PEAR::isError($mail_sent)) { print($mail_sent->getMessage());}

The third case:

Before using the following source code, please configure the pear path and download the net_smtp package
Choose different setting methods according to your operating system in the php.ini file

; UNIX: "/path1:/path2" 
include_path = ".:./php/pear"
;
; Windows: "\path1;\path2"
;include_path = ".;c:\php\pear"
require 'Net/SMTP.php';
$host = '126.com';//smtp服務(wù)器的ip或域名
$username= 'arcow';//登陸smtp服務(wù)器的用戶名
$password= 'secret';//登陸smtp服務(wù)器的密碼
$from = 'arcow@126.com';  //誰發(fā)的郵件
$rcpt = array('test@test.com', 'arcow@126.com');//可設(shè)多個接收者
$subj = "Subject: 你是誰\n";//主題
$body = "test it";//郵件內(nèi)容
/* 建立一個類 */
if (! ($smtp = new Net_SMTP($host))) {
  die("無法初始化類Net_SMTP!\n");
}
/* 開始連接SMTP服務(wù)器*/
if (PEAR::isError($e = $smtp->connect())) {
  die($e->getMessage() . "\n");
}
/* smtp需要身份驗(yàn)證 */
$smtp->auth($username,$password,"PLAIN");
/*設(shè)置發(fā)送者郵箱 */
if (PEAR::isError($smtp->mailFrom($from))) {
  die("無法設(shè)置發(fā)送者郵箱為 <$from>\n");
}
/* 設(shè)置接收郵件者 */
foreach ($rcpt as $to) {
  if (PEAR::isError($res = $smtp->rcptTo($to))) {
    die("郵件無法投遞到 <$to>: " . $res->getMessage() . "\n");
  }
}
/* 開始發(fā)送郵件內(nèi)容 */
if (PEAR::isError($smtp->data($subj . "\r\n" . $body))) {
  die("Unable to send data\n");
}
/* 斷開連接 */
$smtp->disconnect();
echo "發(fā)送成功！";
&#63;>

The above is the entire content of this article. Three cases of PHP using pear_smtp to send emails. I hope it will be helpful for everyone to learn PHP programming.

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