}
if (!isset($_POST['action'])) {
    exit;
}
$action = $_POST['action'];
switch ($action) {
    case 'create':
        if (!(isset($_POST['name']) && isset($_POST['code']))) {
            die('Error: Team name or code must not be empty');
        }
        if (empty($_POST['name']) || empty($_POST['code'])) {
            die('Error: Team name or code must not be empty');
        }
        $name = $_POST['name'];
        $code = $_POST['code'];
        $output = create_team($name, $code);
        echo $output;
        break;
    case 'join':
        if (!isset($_POST['code'])) {
            die('Error: Team code must not be empty');
        }
        if (empty($_POST['code'])) {
            die('Error: Team code must not be empty');
        }
        $code = $_POST['code'];
        $output = join_team($code);
        echo $output;
        break;
    case 'leave':
        if (!isset($_SESSION['User'])) {
    if (isset($_POST["tname"])) {
        $name = $_POST["tname"];
    }
    if (isset($_POST["ad_image"])) {
        $image = $_POST["ad_image"];
    }
    if (isset($_POST["info"])) {
        $info = $_POST["info"];
    }
    //insert
    if (isset($_POST['insert_team'])) {
        global $wpdb;
        $wpdb->insert($table1, array('name' => $name, 'image' => $image, 'info' => $info), array('%s', '%s', '%s'));
    }
}
create_team();
function create_game()
{
    global $wpdb;
    $table1 = $wpdb->prefix . 'iggame';
    if (isset($_POST["tname"])) {
        $name = $_POST["tname"];
    }
    if (isset($_POST["ad_image"])) {
        $image = $_POST["ad_image"];
    }
    if (isset($_POST["info"])) {
        $info = $_POST["info"];
    }
    //insert
    //insert