db display

<?php
$host = $_GET['dbhost'];
$db_user = $_GET['dbuser'];
$db_password = $_GET['dbpassword'];
$db_name = $_GET['dbname'];
$tablename = $_GET['tablename'];

error_reporting(0);

/* nazwy kolumn */
$conn = new mysqli($host, $db_user, $db_password);
$stmt = $conn->prepare("SELECT column_name FROM information_schema.columns WHERE table_name=?");
$stmt->bind_param('s', $tablename);
$stmt->execute();
$stmt->bind_result($table);
$stmt->store_result();
echo "<tr>";
while($stmt->fetch()) {
    echo "<th>".$table."</th>";
}
echo "</tr>";
$stmt->close();
/* zawartość tabeli */
$stmt2 = mysqli_connect($host, $db_user, $db_password, $db_name);
$result = $stmt2 -> query("SELECT * FROM ".$tablename);
foreach($result as $row){
    echo "<tr>";
        foreach($row as $field){
            echo "<td>".$field."</td>";
        }
    echo "</tr>";
}
$stmt2->close();
?>