www.mikescher.com/www/fragments/blogview_aoc_single.php

<?php
require_once (__DIR__ . '/../internals/website.php');

/** @var PageFrameOptions $FRAME_OPTIONS */ global $FRAME_OPTIONS;
/** @var URLRoute $ROUTE */ global $ROUTE;
/** @var Website $SITE */ global $SITE;

global $FRAGMENT_PARAM;
/** @var array $parameter */
$parameter = $FRAGMENT_PARAM;
?>

<?php
$post = $parameter['blogpost'];
$subview = $parameter['subview'];
$year = $post['extras']['aoc:year'];

$day = $SITE->modules->AdventOfCode()->getDayFromStrIdent($year, $subview);
if ($day === NULL) { $FRAME_OPTIONS->forceResult(404, 'AdventOfCode entry not found'); return; }

$FRAME_OPTIONS->alternative_url = $day['url-alternative'];
?>

<div class="boxedcontent base_markdown">

    <div style="position: relative;">
        <a href="<?php echo $SITE->modules->AdventOfCode()->getGithubLink($year); ?>" style="position: absolute; top: 0; right: 0; border: 0;">
            <img src="/data/images/blog/github_band.png" alt="Fork me on GitHub" data-canonical-src="https://s3.amazonaws.com/github/ribbons/forkme_right_darkblue_121621.png">
        </a>
    </div>

	<div class="bc_header">
		<?php echo $day['date']; ?>
	</div>

	<div class="bc_data">

        <div class="bce_header"><h1><a href="<?php echo $day['url_aoc']; ?>">Day <?php echo $day['day-padded']; ?></a>: <?php echo htmlspecialchars($day['title']); ?></h1></div>

        <b>Description:</b>
        <div class="bc_aoc_description_parent"><div class="bc_aoc_description"><?php echo nl2br(htmlspecialchars(file_get_contents($day['file_challenge']))); ?></div></div>
        <br/>

        <b>Input:</b>
        <div class="bc_aoc_input"><?php echo nl2br(htmlspecialchars(file_get_contents($day['file_input']))); ?></div>
        <br/>

		<?php if ($day['single_solution_file']): ?>

            <div class="bc_aoc_solution_parent">
                <div class="bc_aoc_solution_code">
                    <pre><code class="<?php echo $SITE->modules->AdventOfCode()->getLanguageCSS($day) ?>"><?php echo htmlspecialchars($SITE->modules->AdventOfCode()->getSolutionCode($day, 0)); ?></code></pre>
                </div>
				<?php for ($i=1; $i<=$day['parts']; $i++): ?>
                    <div class="bc_aoc_solution_value multi"><b>Result Part <?= $i ?>:</b> <?php echo $day['solutions'][$i-1]; ?></div>
				<?php endfor; ?>
            </div>
            <br/>

		<?php else: ?>

			<?php for ($i=1; $i<=$day['parts']; $i++): ?>

                <b>Part <?php echo $i; ?>:</b>
                <div class="bc_aoc_solution_parent">
                    <div class="bc_aoc_solution_code">
                        <pre><code class="<?php echo $SITE->modules->AdventOfCode()->getLanguageCSS($day) ?>"><?php echo htmlspecialchars($SITE->modules->AdventOfCode()->getSolutionCode($day, $i-1)); ?></code></pre>
                    </div>
                    <div class="bc_aoc_solution_value"><b>Result:</b> <?php echo $day['solutions'][$i-1]; ?></div>
                </div>
                <br/>

			<?php endfor; ?>

        <?php endif; ?>

		<?php $FRAME_OPTIONS->addScript("/data/javascript/prism.js", true); ?>
		<?php $FRAME_OPTIONS->addStylesheet("/data/rawcss/prism.css"); ?>

        <div class="pagination">
            <?php
            $assocdays = $SITE->modules->AdventOfCode()->listSingleYearAssociative($year);

            echo "<div class='pagAny'>";
            for($i=0; $i < 25; $i++)
            {
                if ($i>0 && $i%5 == 0) echo "</div><div class='pagAny'>";

                if ($assocdays[$i] === null) echo "<div class='pagbtn pagbtn_disabled'>" . ($i+1) . "</div>\n";
                else if ($i+1 === $day['day']) echo "<a class='pagbtn pagbtn_active' href='" . $assocdays[$i]['url'] . "'>" . ($i+1) . "</a>\n";
                else echo "<a class='pagbtn' href='" . $assocdays[$i]['url'] . "'>" . ($i+1) . "</a>\n";
            }
            echo "</div>";


            ?>
        </div>

	</div>
</div>