Error while using materialize css table - php

Question

I have a php file designed to retrieve information from database. The problem is that if i use a normal table tags like the following it would work and show the page for me.
<?php /*Template Name: contactread */
get_header();
$servername = "localhost";
$username = "***** (for security purpose only)";
$password = "*****";
$dbname = "*****";
// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
$query = "SELECT * FROM contact";
$result = mysqli_query($conn,$query);
echo "<table class='table'>
<tr>
<th class='tda' style='border-bottom: 1px solid #313131; border-top: 1px solid #313131; border-right: 1px solid #313131;'>نام</th>
<th class='tda' style='border-bottom: 1px solid #313131; border-top: 1px solid #313131; border-right: 1px solid #313131;'>ایمیل</th>
<th class='tda' style='border-bottom: 1px solid #313131; border-top: 1px solid #313131; border-right: 1px solid #313131;'>پیام</th>
</tr>";
while($row = mysqli_fetch_array($result))
{
echo "<tr>";
echo "<td class='tda' style='border-bottom: 1px solid #313131; border-right: 1px solid #313131;'>" . $row['name'] . "</td>";
echo "<td class='tda' style='border-bottom: 1px solid #313131; border-right: 1px solid #313131;'>" . $row['email'] . "</td>";
echo "<td class='tda' style='border-bottom: 1px solid #313131; border-right: 1px solid #313131;'>" . $row['message'] . "</td>";
echo "</tr>";
}
echo "</table>";
mysqli_close($conn);
?>
And When i use it like the following which is calling everything from the framework, it gives me the http 500 error. (I included the entire page for showing the first type of table so you have the idea of the page, however i dont see a reason to re write it all again)
echo "<table>
<thead>
<tr>
<th>نام</th>
<th>ایمیل</th>
<th>پیام</th>
</tr>
</thead>
<tbody>";
while($row = mysqli_fetch_array($result))
{
echo <tr>
echo <td>. $row['name'] .</td>
echo <td>. $row['email'] .</td>
echo <td>. $row['message'] .</td>
echo </tr>
}
echo "</tbody>
</table>";
Can someone help me why is this making the error? I couldnt find anything helpful in the internet.
EDIT: I have added materialize-css css files with the link in the header and i have included the header as well.

Answer 1

Simple mistake. You are not wrapping the data you want to echo in quotes, so try doing it like this.
while($row = mysqli_fetch_array($result))
{
echo "<tr>";
echo "<td>$row[name]</td>";
echo "<td>$row[email]</td>";
echo "<td>$row[message]</td>";
echo "</tr>";
}