데이터베이스에서 CodeIgniter 언어 파일을 동적으로 생성하려면 어떻게 해야 합니까?

<code class="sql">CREATE TABLE lang_token (
    id INT NOT NULL AUTO_INCREMENT,
    category TEXT NOT NULL,
    description TEXT NOT NULL,
    lang TEXT NOT NULL,
    token TEXT NOT NULL,
    PRIMARY KEY (id)
);</code>

<code class="php">function updatelangfile($my_lang) {
    $query = $this->db->where('lang', $my_lang)->get('lang_token');

    $langstr = "<?php 
    $lang = array();
    ";

    foreach ($query->result() as $row) {
        $langstr .= "$lang['{$row->category}_{$row->description}'] = \"{$row->token}\";\n";
    }

    write_file('./application/language/' . $my_lang . '/general_lang.php', $langstr);
}</code>

<code class="php">function __construct() {
    parent::__construct();
    $this->load->helper('file');
    $this->lang->load('general', 'english');
}</code>