how to check if directory is online php - php

Question

i have this code which will check whether (a) the store is online and (b) the directory /store is available:
<?php
// Set flag that this is a parent file
define( '_JEXEC', 1 );
define('JPATH_BASE', dirname(realpath(__FILE__)). '/../store' );
define( 'DS', DIRECTORY_SEPARATOR );
require_once ( JPATH_BASE .DS.'includes'.DS.'defines.php' );
require_once ( JPATH_BASE .DS.'includes'.DS.'framework.php' );
jimport('joomla.application.module.helper');
jimport('joomla.application.component.helper');
$mainframe =& JFactory::getApplication('site');
$filename = '../store/';
if (!$mainframe->getCfg('offline') && file_exists($filename))
{
echo "online";
}
else
{
echo "offline";
}
?>
when the i set the store as offline in my control panel it works fine, however when the directory /store has it's name changed or is deleted (becomes unavailable) the page generates a server error whereas it should echo "offline". how can i modify it so that when the directory names changes, it changes it echoes "offline"

Answer 1

You must check the directory prior to the initialization of the application, since the application relies on the directory's existence.
<?php
// Set flag that this is a parent file
define( '_JEXEC', 1 );
define('JPATH_BASE', dirname(realpath(__FILE__)). '/../store' );
if (!file_exists(JPATH_BASE)) {
echo 'Offline due to missing installation';
exit(0);
}
define( 'DS', DIRECTORY_SEPARATOR );
require_once ( JPATH_BASE .DS.'includes'.DS.'defines.php' );
require_once ( JPATH_BASE .DS.'includes'.DS.'framework.php' );
jimport('joomla.application.module.helper');
jimport('joomla.application.component.helper');
$app = JFactory::getApplication('site');
if ($app->getCfg('offline')) {
echo 'Offline due to configuration setting';
$app->close();
}
echo 'Online';