table.php

<?php
// Require array $teams
require_once __DIR__ . "/resources/data.php";

// Create array with table headings
//$headings = ['team'=>'Team', 'nickname'=>'Nickname', 'city'=>'City', 'league'=>'League', 'last-time-champions'=>'Last time champion', 'URL'];
$headings = ['Team', 'Nickname', 'City', 'League', 'Last time champions', 'URL'];
?>
<table>
    <thead>
        <tr>
            <?php
            // Create first row of table with column headings from $headings array
            foreach ($headings as $heading) :
            ?>
                <th><?= $heading; ?></th>
            <?php
            endforeach;
            ?>
        </tr>
    </thead>
    <tbody>

        <?php
        // Loop through secondary array, create one table row for each team
        foreach ($teams as $teamname => $team) :
        ?>
            <tr>
                <!-- Use current key value to get team names -->
                <td><?= $teamname; ?></td>
                <td>
                    <?php
                    // Check if current team has key 'nickname', if so print nickname, else <td> will be empty
                    if (array_key_exists('nickname', $team)) {
                        echo $team['nickname'];
                    }
                    ?>
                </td>
                <!-- Get rest of values from $team array -->
                <td><?= $team['city']; ?></td>
                <td><?= $team['league']; ?></td>
                <td><?= $team['last-time-champions']; ?></td>
                <td><a href="<?= $team['url']; ?>"><?= $team['url']; ?></a></td>
            </tr>
        <?php
        endforeach;
        ?>
    </tbody>
</table>