Jquery cart data send to e-mail - php

Question

I want to send the data from the order to the email + contact form send.
I do not know how to send cart data to an email with a contact form
function load_cart_data()
{
$.ajax({
url:"fetch_cart.php",
method:"POST",
dataType:"json",
success:function(data)
{
$('#cart_details').html(data.cart_details);
$('.total_price').text(data.total_price);
$('.badge').text(data.total_item);
}
});
}
Cart ....
<?php
//fetch_cart.php
session_start();
$total_price = 0;
$total_item = 0;
$output = '
<div class="table-responsive" id="order_table">
<table class="table table-bordered table-striped">
<tr>
<th width="40%">Product Name</th>
<th width="10%">Quantity</th>
<th width="20%">Price</th>
<th width="15%">Total</th>
<th width="5%">Action</th>
</tr>
';
if(!empty($_SESSION["shopping_cart"]))
{
foreach($_SESSION["shopping_cart"] as $keys => $values)
{
$output .= '
<tr>
<td>'.$values["product_name"].'</td>
<td>'.$values["product_quantity"].'</td>
<td align="right">$ '.$values["product_price"].'</td>
<td align="right">$ '.number_format($values["product_quantity"] * $values["product_price"], 2).'</td>
<td><button name="delete" class="btn btn-danger btn-xs delete" id="'. $values["product_id"].'">Remove</button></td>
</tr>
';
$total_price = $total_price + ($values["product_quantity"] * $values["product_price"]);
$total_item = $total_item + 1;
}
$output .= '
<tr>
<td colspan="3" align="right">Total</td>
<td align="right">$ '.number_format($total_price, 2).'</td>
<td></td>
</tr>
';
}
else
{
$output .= '
<tr>
<td colspan="5" align="center">
Your Cart is Empty!
</td>
</tr>
';
}
$output .= '</table></div>';
$data = array(
'cart_details' => $output,
'total_price' => '$' . number_format($total_price, 2),
'total_item' => $total_item
);
echo json_encode($data);
?>
email send
<?php
$namebusiness = $_POST['namebusiness'];
$firstname = $_POST['firstname'];
$lastname = $_POST['lastname'];
$adress = $_POST['adress'];
$city = $_POST['city'];
$psc = $_POST['psc'];
$state = $_POST['state'];
$phone = $_POST['phone'];
$visitor_email = $_POST['email'];
$data = $_POST['data'];
$message = $_POST['cart_details'];
$email_subject = "Order";
$email_body = "Name Of Business: $namebusiness.\n "."First name: $firstname.\n "."Last name: $lastname.\n"."E-mail: $visitor_email.\n"."Adress: $adress.\n "."City: $city.\n "."Post Code / ZIP: $psc.\n "."State: $state.\n "."Phone number: $phone.\n";
$to = "patrikl123#seznam.cz";
$to = $_POST['email'];
$headers = 'From: domaci#potrebyhanka.cz' . "\r\n" .
'Reply-To: domaci#potrebyhanka.cz' . "\r\n" .
'Content-type: text/html; charset=UTF-8' . "\r\n".
'X-Mailer: PHP/' . phpversion();
mail($to, $email_subject,$message,$email_body,$headers);
header("Content-type: text/html; charset=UTF-8");
header("Location: index.php");
//https://stackoverflow.com/questions/30802674/retrieve-data-from-cart-and-send-using-mail
?>