Structure of Gmail PHPMailer using PHP

<?php

use PHPMailer\PHPMailer\PHPMailer;

use PHPMailer\PHPMailer\Exception;

require 'vendor/autoload.php';

if(isset($_POST['send']))

{

$to_id = $_POST['toid'];

$subject = $_POST['subject'];

$message = $_POST['message'];

$mail = new PHPMailer(true);

$mail->isSMTP();

$mail->Host = 'smtp.gmail.com';

$mail->SMTPAuth = true;

$mail->Username = 'your@gmail.com';

$mail->Password = 'YourPassword';

$mail->SMTPSecure = 'tls';

$mail->Port = 587;

$mail->setFrom('vedprakash151994@gmail.com', 'Ved Prakash N');

$mail->addAddress($to_id);

$mail->Subject = $subject;

$mail->Body = $message;

if(!$mail->send())

{

$error = "Mailer Error: " .$mail->ErrorInfo;

echo "<div class=display> '.$error.' </div>";

}

else

{

echo " <div class=display> Message Sent </div>";

}

}

else

{

echo "<div class=display> Please Enter Valid Data </div> ";

}

?>