section.php

<?php
session_start();
require_once('class.php');
$user = new User();
if (!$user->isLoggedIn()) {
    header("Location:login_html.php");
}
echo "Welcome ".$_SESSION['user']."<br>";
echo "<a href='redirect.php'>Logout</a> <br>";
echo "<strong>".$_GET['section']." Section". "</strong><br>";
echo "<a href=".'post_html.php?section='.$_GET['section'].">Create Topic</a> <br>";
$sectionid = $user->getSectionId($_GET['section']);
$topics = $user->getTopics($sectionid);
if(mysqli_num_rows($topics) > 0){
    while($row=mysqli_fetch_assoc($topics)){
        extract($row);
        $time = date('d-m-Y \a\t h:iA',"$time_submitted");
        echo "<hr> <br>";
        echo "<strong><a href='thread.php?refid=$topicid'>$topic </a></strong><br>";
        echo "By $poster on $time <br>";
        echo "<hr>";
    }
}
else{
    echo "No topics created yet";
}