关于PHP发送邮件问题

$mail = new PHPMailer; 
$mail->isSMTP();        
$mail->Host = 'smtp.163.com';   
$mail->SMTPAuth = true;
$mail->CharSet='UTF-8';     
$mail->Username = '[e-mail]';  
$mail->Password = 'XXX';   
$mail->Port = 25;   
$mail->From = '[e-mail]';            
$mail->FromName = 'XXXX';     
$mail->addAddress('[e-mail]');      
$mail->WordWrap = 50;                              
$mail->isHTML(true);                     
$mail->Subject = '发送邮件测试';
$mail->Body    = 'XXXX';
if(!$mail->send()) {
    echo '邮件发送失败.';
    echo '错误信息: ' . $mail->ErrorInfo;
} else {
    echo '邮件发送成功';
}

回复内容：

$mail = new PHPMailer; 
$mail->isSMTP();        
$mail->Host = 'smtp.163.com';   
$mail->SMTPAuth = true;
$mail->CharSet='UTF-8';     
$mail->Username = '[e-mail]';  
$mail->Password = 'XXX';   
$mail->Port = 25;   
$mail->From = '[e-mail]';            
$mail->FromName = 'XXXX';     
$mail->addAddress('[e-mail]');      
$mail->WordWrap = 50;                              
$mail->isHTML(true);                     
$mail->Subject = '发送邮件测试';
$mail->Body    = 'XXXX';
if(!$mail->send()) {
    echo '邮件发送失败.';
    echo '错误信息: ' . $mail->ErrorInfo;
} else {
    echo '邮件发送成功';
}

https://github.com/kokororin/posutoba/tree/master/src/System/Library/Vendor/PHPMailer

Vendor('PHPMailer.PHPMailerAutoload');
$mail = new \PHPMailer();

用thinkphp框架的吧，把SMTP那个类文件的命名空间改为和你的phpmailer类一样的命名空间就好了，前几天刚刚配置过