Yii 1.1 index.php file with output buffering

yii-index.php

<?php

$yii    = dirname(__FILE__) . '/framework/yii.php';
$config = dirname(__FILE__) . '/protected/config/main.php';

if (isset($_SERVER['REMOTE_ADDR']) && in_array($_SERVER['REMOTE_ADDR'], array('127.0.0.1'))) {
    defined('YII_DEBUG') or define('YII_DEBUG', true);
    ini_set('display_errors', 'on');
    error_reporting(E_ALL);
}
else {
    defined('YII_DEBUG') or define('YII_DEBUG', true);
}
defined('YII_TRACE_LEVEL') or define('YII_TRACE_LEVEL',3);

require_once($yii);
date_default_timezone_set('Europe/Warsaw');

$app = Yii::createWebApplication($config);

$app->onBeginRequest = function($event) {
    return ob_start('ob_gzhandler');
};
$app->onEndRequest = function($event) {
    return @ob_end_flush();
};

$app->run();