awo-hamburg-intranet/module/ticketcenter/services/ticketcenter.api.php

<?php
error_reporting(E_ERROR | E_PARSE | E_CORE_ERROR | E_COMPILE_ERROR);
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);

session_start();
$currDir = __DIR__;
$rootDir = dirname(dirname(dirname($currDir)));
$mysydeDir = $rootDir . '/mysyde';

require_once($rootDir .  '/vendor/autoload.php');
require_once($rootDir . "/mysyde/frontend/frontend_functions.inc.php");

$envDir = $rootDir . '/config';
$envFilePath = $envDir . '/.env';
if (is_dir($envDir) && file_exists($envFilePath) && is_file($envFilePath) && is_readable($envFilePath)) {
    $dotenv = new \Dotenv\Dotenv($envDir);
    $dotenv->load();
}
$common = $mysydeDir ."/common/common_functions.inc.php";
require_once($common);

$connEnv = (local_environment()) ? $mysydeDir."/dc.config.php" : $mysydeDir."/dc-server.config.php";

require_once($connEnv);

db_connect();


switch ($_POST['action']) {
    case 'get_tickets':
        get_tickets();
        break;
    default:
        echo json_encode(['error' => 'Invalid action']);
        break;
}

function get_tickets() {
    $contact = $_SESSION['main_contact'];
    $contact_json = json_encode($contact);

    return json_encode(['contact' => $contact_json]);
}