php5.5使用PHPMailer-5.2发送邮件的完整步骤

<?php
require 'PHPMailerAutoload.php';

$mail = new PHPMailer;

$mail->SMTPDebug = 3;        // Enable verbose debug output

$mail->isSMTP();          // Set mailer to use SMTP
$mail->Host = 'smtp.exmail.qq.com'; // Specify main and backup SMTP servers
$mail->SMTPAuth = true;        // Enable SMTP authentication
$mail->Username = 'xxx@qq.com';     // SMTP username
$mail->Password = 'yourpassword';       // SMTP password
$mail->SMTPSecure = 'ssl';       // Enable TLS encryption, `ssl` also accepted
$mail->Port = 465;         // TCP port to connect to

$mail->setFrom('fromWho@qq.com', 'Mailer');
$mail->addAddress('toWhom@qq.com', 'Ryan Miao');  // Add a recipient
$mail->addAddress('ellen@example.com');    // Name is optional
// $mail->addReplyTo('info@example.com', 'Information');
$mail->addCC('cc@example.com');
$mail->addBCC('bcc@example.com');

$mail->addAttachment('/var/tmp/file.tar.gz');   // Add attachments
$mail->addAttachment('/tmp/image.jpg', 'new.jpg'); // Optional name
$mail->isHTML(true);         // Set email format to HTML

$mail->Subject = 'Here is the subject';
$mail->Body = 'This is the HTML message body <b>in bold!</b>';
$mail->AltBody = 'This is the body in plain text for non-HTML mail clients';

if(!$mail->send()) {
 echo 'Message could not be sent.';
 echo 'Mailer Error: ' . $mail->ErrorInfo;
} else {
 echo 'Message has been sent';
}

php mail.php