Проблемка с ini

<?php
if (!defined('_BR_'))
define('_BR_',chr(13).chr(10));
class ini {
private static $filename;
private static $arr = array();
public function __construct($file = ''){
if (!empty($file)){
if (file_exists($file) && is_readable($file)){
self::$filename = $file;
self::loadarray($file);
}
}
}
public static function loadarray($filename){
$arr = parse_ini_file($filename, true);
self::$arr = $arr;
return $arr;
}
public function read($key, $path = ''){
if(!empty($path)) self::loadarray($path);
$arr = self::$arr;
if (isset($arr[$key]))
return $arr[$key];
else
return false;
}
public function write($key, $value = '', $path = ''){
if(!empty($path)) self::loadarray($path);
$arr = self::$arr;
self::$arr[$key] = $value;
}
public function deletekey($key){
if (isset(self::$arr[$key]))
unset(self::$arr[$key]);
}
public function updatefile(){
$result = '';
foreach(self::$arr as $key=>$value){
$result .= $key .' = "'.$value .'";'. _BR_;
}
$result .= _BR_;
file_put_contents(self::$filename, $result);
return true;
}
}