Email Function With smtp

<?php

$name= $_REQUEST['name'] ;
$email= $_REQUEST['email'] ;
$comments= $_REQUEST['comments'] ;

require("/home/uparw/public_html/demo6/14/PHPMailer-master/class.phpmailer.php");

$mail = new PHPMailer;

// For Useing Domian mail
$mail->isSMTP();                                      // Set mailer to use SMTP
$mail->SMTPDebug = 0;
$mail->Host = 'localhost';  // Specify main and backup server
$mail->SMTPAuth = true;                               // Enable SMTP authentication
$mail->Username = 'ali@uparw.com';                            // SMTP username
$mail->Password = 'password';                           // SMTP password
$mail->SMTPSecure = 'tls';                            // Enable encryption, 'ssl' also accepted

// For Gmail
//$mail->SMTPAuth = true; // authentication enabled
//$mail->SMTPSecure = 'ssl'; // secure transfer enabled REQUIRED for GMail
//$mail->Host = "smtp.gmail.com";
//$mail->Port = 465; // or 587
//$mail->IsHTML(true);
//$mail->Username = "aliuparrow@gmail.com";
//$mail->Password = "password";


$mail->From = 'ali@uparw.com';
$mail->FromName = $name;
$mail->addAddress('alisiddique2011@gmail.com', 'Ali Siddique');  // Add a recipient
//$mail->addAddress('alisiddique2011@gmail.com');               // Name is optional
//$mail->addReplyTo('alisiddique2011@gmail.com', 'Ali');
//$mail->addCC('cc@example.com');
//$mail->addBCC('bcc@example.com');

//$mail->WordWrap = 50;                                 // Set word wrap to 50 characters
//$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 = 'Query From healthjourney ';
$mail->Body    = 'Email: ' . $email . '<br />' . 'Comment: ' . $comments;
$mail->AltBody = 'Email: ' . $email . '<br />' . 'Comment: ' . $comments;

//if(!$mail->send()) {
   //echo 'Message could not be sent.';
   //echo 'Mailer Error: ' . $mail->ErrorInfo;
  // exit;
//}
  $output = '';
    if(!$mail->Send())
    {
       $output .= "Mailer Error: ". $mail->ErrorInfo;
    }
    else
    {
       ob_clean();
       header('Location: thankyou.html');
       exit();
    }
    echo $output;
?>