Database info not showing from my loop - php

Question

I new to php and learning and need some advice on shoing my database info within a loop which includes html, My page is blank so am wondering why my php isnt valid:
<?php include 'incudes/connect_db.php'; ?>
<div class="topbar">
<div class="topbarblock1">Dashboard</div>
<div class="topbarblock2">Username</div>
</div>
<br><br>
<div class="middle">
<div class="middleblock1">Dashboard</div>
<div class="middleblock2">
<div class="container">
<?php
$result = mysqli_query($con,"SELECT * FROM users");
while($row = mysqli_fetch_array($result)) {
?>
<h2>
User Management
<hr />
</h2>
</div>
<div class="containermain">
<table>
<tr>
<th class="th1">User Id</th>
<th class="th2">Username</th>
<th class="th3">Email Address</th>
<th class="th4">Details</th>
</tr>
<tr>
<td class="td1">#</td>
<td class="td2"><?php echo $row['username']; ?></td>
<td class="td3"><?php $row['email']; ?></td>
<th class="td4">Edit</th>
</tr>
</table>
</div>
</div>
</div>
<?php
}
?>
I'm not looking for a straight out answer I am looking for some advice on how this should be laid out and learn best practices.

Answer 1

Change the line that says
<td class="td3"><?php $row['email']; ?></td>
to
<td class="td3"><?php echo $row['email']; ?></td>
PHP will try to interpret the variable as some sort of command/statement otherwise and subsequently fail.
Also rethink where you wrap the loop as I previously mentioned, or else your HTML is going to end up wonky (you'll see this after you've fixed the code.)
You should also program by using error_reporting(E_ALL); at the start of your code so you can fix simple mistakes on your own