打开你电脑里的PHP.INI文件,找到如下位置,添加红线部分的内容,路径就是你PHPMailer存放的位置:

保存,重启apache. 
然后借用readme里的一个例子,稍微改一下就可以用了,由于只做最简单的测试,很多东西我注释掉了。 
send.php 
 代码如下:
require("class.phpmailer.php"); 
$mail = new PHPMailer(); 
$address = $_POST['address']; 
$mail->IsSMTP(); // set mailer to use SMTP 
$mail->Host = "mail.songzi.org"; // specify main and backup server 
$mail->SMTPAuth = true; // turn on SMTP authentication 
$mail->Username = "phpmailer@songzi.org"; // SMTP username 
$mail->Password = "******"; // SMTP password 
$mail->From = "phpmailer@songzi.org"; 
$mail->FromName = "songzi"; 
$mail->AddAddress("$address", ""); 
//$mail->AddAddress(""); // name is optional 
//$mail->AddReplyTo("", ""); 
//$mail->WordWrap = 50; // set word wrap to 50 characters 
//$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 = "PHPMailer测试邮件"; 
$mail->Body = "Hello,这是松子的测试邮件"; 
$mail->AltBody = "This is the body in plain text for non-HTML mail clients"; 
if(!$mail->Send()) 
{ 
echo "Message could not be sent. 
"; 
echo "Mailer Error: " . $mail->ErrorInfo; 
exit; 
} 
echo "Message has been sent"; 
?> 
test.php 
 代码如下:
 
 phpmailer Unit Test
 请你输入
收信的邮箱地址: