site/wiki/index.php

<?php 
$title = "tilde.club wiki";
include __DIR__."/../header.php";
?>

<h1 id="fancyboi">the tilde.club wiki</h1>

	<div class="grid">
		<div class="row">

			<div class="col">

<p>here's the articles on our wiki:</p>
<ul>
        <?php 
              $category_to_articles = [];
              foreach (glob("source/*.md") as $file) {
                $article = basename($file, ".md");
		$title = preg_match("/title: (.*)/i", file_get_contents($file), $matches) ? $matches[1] : $article;
		$category = preg_match("/category: (.*)/i", file_get_contents($file), $matches) ? $matches[1] : 'default';
		if (array_key_exists($category, $category_to_articles)) {
			array_push($category_to_articles[$category], [$article, $title]);
		} else {
			$category_to_articles[$category] = [[$article, $title]];
		}
                ksort($category_to_articles);
              }
        ?>
	<?php foreach ($category_to_articles as $category => $articles)	{ ?>
		<li><?=$category?></li>
			<ul>
        <?php
		$article_titles = [];
		$article_names = [];
		foreach ($articles as $article) {
			array_push($article_names, $article[0]);
                        array_push($article_titles, $article[1]);
		}
		$name_to_title = array_combine($article_names, $article_titles);
                asort($name_to_title);
		foreach ($name_to_title as $name => $title) { ?>
                          <li><a href="/wiki/<?=$name?>.html"><?=$title?></a></li>
	<?php   } ?>
			</ul>

        <?php } ?>
</ul>
	</div>
</div>

<?php include "../footer.php"; ?>