barcode.php

<div data-role="page" id="barcode">
    <div data-role="header">
        <h1>XLX Dashboard</h1>
    </div>

            <?php
                include 'includes/menu.php';
                $barcode = $_POST['barcode'];
                $barcodesearch = $handler->query("SELECT * FROM customers WHERE barcode='$barcode'");
                while($row = $barcodesearch->fetch(PDO::FETCH_ASSOC)) {
                    $name = $row['name'];
                    $balance = $row['balance'];
                }
            ?>
    <div data-role="content">
        <p>Barcode = <?php echo $barcode;?></p>
        <p>Name = <?php echo $name;?></p>
        <p>Balance = $<?php echo $balance;?></p>
    </div>
    <div data-role="footer">
        <h4>XLX Glen Iris</h4>
    </div>
</div>