PHP Mailer Multiple email - php

Question

I have a form in my website. When the user fills out the form, I want an email to be sent to me with data entered in the form and also a thank you email for the person filling the form.
This is the code I am using:
<?php
function sendEmail($subject, $body) {
require 'phpmailer/PHPMailerAutoload.php';
$mail = new PHPMailer();
$mail->IsSMTP();
$mail->SMTPDebug = 0;
$mail->SMTPAuth = true;
$mail->SMTPSecure = "ssl"; // does tls works with port 25
$mail->Host = 'smtp.zoho.com'; // is this the correct
$mail->Port = 465;
$mail->Username = "noreply#domain.org";
$mail->Password = "mypassword";
$mail->SetFrom("noreply#domain.org");
$mail->Subject = $subject;
$mail->Body = $body;
$mail->IsHTML(true);
$mail->AddAddress('data#domain.org');
if(!$mail->Send()) {
$mail->ErrorInfo;
echo "<script>alert('Error Occured sending the enquiry. Please try again')</script>";
}
else
{
echo "<script>window.location.href='http://domain.com/index.html'</script>";
}
}
?>
<?php
function sendEmail($subject, $body) {
require 'phpmailer/PHPMailerAutoload.php';
$mail = new PHPMailer();
$mail->IsSMTP();
$mail->SMTPDebug = 3;
$mail->SMTPAuth = true;
$mail->SMTPSecure = "ssl"; // does tls works with port 25
$mail->Host = 'smtp.zoho.com'; // is this the correct
$mail->Port = 465;
$mail->Username = "noreply#domain.org";
$mail->Password = "mypassword";
$mail->SetFrom("noreply#domain.org");
$mail->Subject = $subject;
$mail->Body = $body;
$mail->IsHTML(true);
$mail->AddAddress(''.$_POST['emailAddr'].''); // **
emailAddr is the name for email field in the form and I wish to send email to this email address.
$mail->Subject = 'Thank you for contacting Domain';
$mail->Body = 'Thanks for getting in touch. Your message has been received and will be processed as soon as possible.';
if(!$mail->Send()) {
$mail->ErrorInfo;
echo "<script>alert('Error Occured sending the enquiry. Please try again')</script>";
}
else
{
echo "<script>window.location.href='http://domain.com/index.html'</script>";
}
}
?>