Класс Conf

class Conf extends \Cms\Site\Base { … }

    var $file = null;

    var $data = null;

    function __construct($open = true) {
        parent::__construct();
        if ($open === false) return;
        elseif ($open === null || $open === true) $open = "cms/conf.php";
        $this->init($open);
    }

    function init($file = null) {
        $root = $this->root();
        if (isset($file)) $this->file = $file;
        else $file = $this->file;
        if ($file[0] != "/" && strlen($root)) $this->file = $file = "$root/$file";
        if (is_array($data = @include($file))) {
            $this->data = $data;
            return true;
        } else {
            $this->addError("Невозможно прочитать файл «{$file}»");
        }
    }

    function get($key, $default = null) {
        return isset($this->data[$key]) ? $this->data[$key] : $default;
    }

    function set($key, $value = null) {
        return $this->data[$key] = $value;
    }

    function save() {
        if (@file_put_contents($file = $this->file, $this->export($this->data)) !== false) {
            @chmod($file, 0666);
            return true;
        } else {
            $this->addError("Невозможно записать файл «{$file}»");
        }
    }

    function export($data) {
        $a = array();
        foreach ($data as $k => $v) if (substr($k, 0, 5) != "_old_") $a[$k] = $v;
        return '<' . '?php' . ' return' . "\n" . var_export($a, true) . ';' . "\n";
    }