03.FacebookPosts

<?php
date_default_timezone_set("Europe/Sofia");
$text = $_GET['text'];
$articles = preg_split('/\s*\n/', $text, -1, PREG_SPLIT_NO_EMPTY);

$articleDetails = [];
foreach ($articles as $article) {
    $articleDetails[] = preg_split('/\s*;\s*/', $article , -1, PREG_SPLIT_NO_EMPTY);
}

//sort by date
usort($articleDetails, function($a, $b) {
    return strtotime($a[1]) < strtotime($b[1]) ? 1 : -1;
});

$output = "";
for ($i = 0; $i < count($articleDetails); $i++) {
    $date = strtotime($articleDetails[$i][1]);
    $date = date("j F Y", $date);
    $output .= "<article><header>";
    $output .= "<span>" . htmlspecialchars($articleDetails[$i][0]) . "</span>";
    $output .= "<time>" . $date . "</time></header>";
    $output .= "<main><p>" . htmlspecialchars($articleDetails[$i][2]) . "</p></main>";
    $output .= "<footer><div class=\"likes\">" . htmlspecialchars($articleDetails[$i][3]) . " people like this</div>";
    //check if there are any comments
    if (isset($articleDetails[$i][4])) {
        $comments = explode('/', $articleDetails[$i][4]);
        $output .= "<div class=\"comments\">";
        for ($j = 0; $j < count($comments); $j++) {
            $output .= "<p>" . htmlspecialchars(trim($comments[$j])) . "</p>";
        }
        $output .= "</div>";
    }
    $output .= "</footer></article>";
}
echo $output;