NarKampenTake2/ServerFiles/Categories.php

<?php

$HOST = 'nordh.xyz';
$USERNAME = 'narKampen';
$PASSWORD = '9Bq.6[AcTc2ADwN-';
$DATABASE = 'narKampen';
$PORT = '3306';

$secretKey = 'TheNarKampenSecretKey';

try {
    $dbh = new PDO(
        'mysql:host=' . $HOST . ';dbname=' . $DATABASE,
        $USERNAME,
        $PASSWORD
    );
} catch (PDOException $e) {
    echo '<h1>An error har occured. </h1><pre>', $e->getMessage(), '</pre>';
}

$sth = $dbh->query("SELECT c.*, count(qtc.categoryId) as questionCount " .
"FROM Category c INNER JOIN QuestionToCategory qtc ON qtc.categoryId = c.id " .
"GROUP BY c.id;");

$sth->setFetchMode(PDO::FETCH_ASSOC);

$result = $sth->fetchAll();
if (count($result) > 0) {
    echo json_encode($result, JSON_UNESCAPED_UNICODE);
}