How to send 2 emails with only one PHP contact form - php

Question

I'm learning PHP and coding and am looking for a way to send 2 email confirmation with this PHP code. I tried to duplicate my mail function but didn't work. I'm not sure I have to duplicate the SMTP part too or not.
What can I try next?
<?php
use PHPMailer\PHPMailer\PHPMailer;
if ( isset ($_POST['name']) and isset ($_POST['email']) and isset ($_POST['message']) ){
$url = $_POST['url'];
$name = $_POST['name'];
$email = $_POST['email'];
$phone = $_POST['phone'];
$rappel = $_POST['period'];
$message = $_POST['message'];
$address = $_POST['address'];
$ville = $_POST['city'];
$net = $_POST['net'];
$tv = $_POST['tv'];
$tel = $_POST['tel'];
$file_attach = $_FILES['file']['tmp_name'];
$file_attach_name = $_FILES['image']['name'];
$msg = '';
if (array_key_exists('email', $_POST)) {
date_default_timezone_set('Etc/UTC');
require 'vendor/autoload.php';
$mail = new PHPMailer;
$mail->isSMTP();
$mail->SMTPDebug = 0;
$mail->Host = 'smtp.gmail.com';
$mail->Port = 587;
$mail->SMTPSecure = 'tls';
$mail->SMTPAuth = true;
$mail->Username = "xxx#xxx.com";
$mail->Password = "";
$mail->setFrom('xxx#xxx.com');
$mail->addReplyTo('$email', '$name');
$cnt=count($_FILES['file']['name']);
if($cnt > 0){
for($i=0;$i<$cnt;$i++){
$mail->AddAttachment($_FILES['file']['tmp_name'][$i], $_FILES['file']['name'][$i],'base64',$_FILES['file']['type'][$i]);
}
}
if ($mail->addReplyTo($_POST['email'], $_POST['name'])) {
//Set the subject line
$mail->Subject = 'Message de votre site ' . $client . ' - ' . $name;
//Keep it simple - don't use HTML
$mail->isHTML(true);
$mail->CharSet = 'UTF-8';
//Build a simple message body
$mail->Body = file_get_contents('rd-mailform.tpl');
$mail->Body = str_replace(
["<!-- #{StartName} -->", "<!-- #{Name} -->"],
["Nom:", $_POST['name']],
$mail->Body);
$mail->Body = str_replace(
["<!-- #{StartPhone} -->", "<!-- #{Phone} -->"],
["Téléphone:", $_POST['phone']],
$mail->Body);
$mail->Body = str_replace(
["<!-- #{StartEmail} -->", "<!-- #{Email} -->"],
["Email:", $_POST['email']],
$mail->Body);
$mail->Body = str_replace(
["<!-- #{StartRappel} -->", "<!-- #{Rappel} -->"],
["Période de rappel:", $_POST['period']],
$mail->Body);
$mail->Body = str_replace(
["<!-- #{MessageStart} -->", "<!-- #{Message} -->"],
["Message:", $_POST['message']],
$mail->Body);
$mail->Body = $mail->Body."Adresse IP de l'expéditeur: $ssIPAddress / Localisation <a href='http://ipinfodb.com/ip_locator.php?ip=$ssIPAddress'>ici</a>, <a href='http://www.ip-tracker.org/ip-to-location.php?ip=$ssIPAddress'>ici</a> et <a href='http://whatismyipaddress.com/ip/$ssIPAddress'>ici</a></p>";
//Send the message, check for errors
if (!$mail->send()) {
echo "Mailer Error: " . $mail->ErrorInfo;
}
}
print "<meta http-equiv=\"refresh\" content=\"0;URL=success.php\">";
}
}
?>