codeigniterใช้ database แล้ว include smf ssi มัน error ครับผม

if (($modSettings = cache_get_data('modSettings', 90)) == null)
	{
		$request = db_query("
			SELECT variable, value
			FROM {$db_prefix}settings", false, false);
		$modSettings = array();
		if (!$request)
			db_fatal_error();
		while ($row = mysql_fetch_row($request))
			$modSettings[$row[0]] = $row[1];
		mysql_free_result($request);


		// Do a few things to protect against missing settings or settings with invalid values...
		if (empty($modSettings['defaultMaxTopics']) || $modSettings['defaultMaxTopics'] <= 0 || $modSettings['defaultMaxTopics'] > 999)
			$modSettings['defaultMaxTopics'] = 20;
		if (empty($modSettings['defaultMaxMessages']) || $modSettings['defaultMaxMessages'] <= 0 || $modSettings['defaultMaxMessages'] > 999)
			$modSettings['defaultMaxMessages'] = 15;
		if (empty($modSettings['defaultMaxMembers']) || $modSettings['defaultMaxMembers'] <= 0 || $modSettings['defaultMaxMembers'] > 999)
			$modSettings['defaultMaxMembers'] = 30;

		if (!empty($modSettings['cache_enable']))
			cache_put_data('modSettings', $modSettings, 90);
	}

echo '[1]';var_dump($GLOBALS['db_connection']);
if (($modSettings = cache_get_data('modSettings', 90)) == null)
	{
echo '[2]';var_dump($GLOBALS['db_connection']);
		$request = db_query("
			SELECT variable, value
			FROM {$db_prefix}settings", false, false);
		$modSettings = array();
		if (!$request)
			db_fatal_error();
		while ($row = mysql_fetch_row($request))
			$modSettings[$row[0]] = $row[1];
		mysql_free_result($request);
echo '[3]';var_dump($GLOBALS['db_connection']);

		// Do a few things to protect against missing settings or settings with invalid values...
		if (empty($modSettings['defaultMaxTopics']) || $modSettings['defaultMaxTopics'] <= 0 || $modSettings['defaultMaxTopics'] > 999)
			$modSettings['defaultMaxTopics'] = 20;
		if (empty($modSettings['defaultMaxMessages']) || $modSettings['defaultMaxMessages'] <= 0 || $modSettings['defaultMaxMessages'] > 999)
			$modSettings['defaultMaxMessages'] = 15;
		if (empty($modSettings['defaultMaxMembers']) || $modSettings['defaultMaxMembers'] <= 0 || $modSettings['defaultMaxMembers'] > 999)
			$modSettings['defaultMaxMembers'] = 30;

		if (!empty($modSettings['cache_enable']))
			cache_put_data('modSettings', $modSettings, 90);
	}
echo '[4]';var_dump($GLOBALS['db_connection']);

// Do a query.  Takes care of errors too.
function db_query($db_string, $file, $line)
{
	global $db_cache, $db_count, $db_connection, $db_show_debug, $modSettings;
	static $conn2;

	if (defined('IS_CI'))
	{
		if ( ! $conn2)
		{
			// create connection to $conn2
		}
	}



	// One more query....
	$db_count = !isset($db_count) ? 1 : $db_count + 1;

	// Debugging.
	if (isset($db_show_debug) && $db_show_debug === true)
	{
		// Initialize $db_cache if not already initialized.
		if (!isset($db_cache))
			$db_cache = array();

		if (!empty($_SESSION['debug_redirect']))
		{
			$db_cache = array_merge($_SESSION['debug_redirect'], $db_cache);
			$db_count = count($db_cache) + 1;
			$_SESSION['debug_redirect'] = array();
		}

		$db_cache[$db_count]['q'] = $db_string;
		$db_cache[$db_count]['f'] = $file;
		$db_cache[$db_count]['l'] = $line;
		$st = microtime();
	}

	// First, we clean strings out of the query, reduce whitespace, lowercase, and trim - so we can check it over.
	if (empty($modSettings['disableQueryCheck']))
	{
		$clean = '';
		$old_pos = 0;
		$pos = -1;
		while (true)
		{
			$pos = strpos($db_string, '\'', $pos + 1);
			if ($pos === false)
				break;
			$clean .= substr($db_string, $old_pos, $pos - $old_pos);

			while (true)
			{
				$pos1 = strpos($db_string, '\'', $pos + 1);
				$pos2 = strpos($db_string, '\\', $pos + 1);
				if ($pos1 === false)
					break;
				elseif ($pos2 == false || $pos2 > $pos1)
				{
					$pos = $pos1;
					break;
				}

				$pos = $pos2 + 1;
			}
			$clean .= ' %s ';

			$old_pos = $pos + 1;
		}
		$clean .= substr($db_string, $old_pos);
		$clean = trim(strtolower(preg_replace(array('~\s+~s', '~/\*!40001 SQL_NO_CACHE \*/~', '~/\*!40000 USE INDEX \([A-Za-z\_]+?\) \*/~'), array(' ', '', ''), $clean)));

		// We don't use UNION in SMF, at least so far.  But it's useful for injections.
		if (strpos($clean, 'union') !== false && preg_match('~(^|[^a-z])union($|[^[a-z])~s', $clean) != 0)
			$fail = true;
		// Comments?  We don't use comments in our queries, we leave 'em outside!
		elseif (strpos($clean, '/*') > 2 || strpos($clean, '--') !== false || strpos($clean, ';') !== false)
			$fail = true;
		// Trying to change passwords, slow us down, or something?
		elseif (strpos($clean, 'sleep') !== false && preg_match('~(^|[^a-z])sleep($|[^[a-z])~s', $clean) != 0)
			$fail = true;
		elseif (strpos($clean, 'benchmark') !== false && preg_match('~(^|[^a-z])benchmark($|[^[a-z])~s', $clean) != 0)
			$fail = true;
		// Sub selects?  We don't use those either.
		elseif (preg_match('~\([^)]*?select~s', $clean) != 0)
			$fail = true;

		if (!empty($fail))
		{
			log_error('Hacking attempt...' . "\n" . $db_string, $file, $line);
			fatal_error('Hacking attempt...', false);
		}
	}
	
	$ret = defined('IS_CI')
	? mysql_query($db_string, $conn2)
	: mysql_query($db_string, $db_connection);

	if ($ret === false && $file !== false)
		$ret = db_error($db_string, $file, $line);

	// Debugging.
	if (isset($db_show_debug) && $db_show_debug === true)
		$db_cache[$db_count]['t'] = array_sum(explode(' ', microtime())) - array_sum(explode(' ', $st));

	return $ret;
}

$db_connection
<?php include(dirname(dirname(dirname(dirname(__FILE__))))."/forum/SSI.php"); ?>
<?php ssi_recentTopics('5'); flush(); ?>
<?php $GLOBALS['db_connection2'] = $db_connection; ?>

$db_connection;
//หรือ global $db_connection;
<?php include(dirname(dirname(dirname(dirname(__FILE__))))."/forum/SSI.php"); ?>
<?php ssi_recentTopics('5'); flush(); ?>

protected static function capture($kohana_view_filename, array $kohana_view_data)
{
    // Import the view variables to local namespace
    extract($kohana_view_data, EXTR_SKIP);
 
    if (View::$_global_data)
    {
        // Import the global view variables to local namespace and maintain references
        extract(View::$_global_data, EXTR_REFS);
    }
 
    // Capture the view output
    ob_start();
 
    try
    {
        // Load the view within the current scope
        include $kohana_view_filename;
    }
    catch (Exception $e)
    {
        // Delete the output buffer
        ob_end_clean();
 
        // Re-throw the exception
        throw $e;
    }
 
    // Get the captured output and close the buffer
    return ob_get_clean();
}


public function render($file = NULL)
{
    if ($file !== NULL)
    {
        $this->set_filename($file);
    }
 
    if (empty($this->_file))
    {
        throw new Kohana_View_Exception('You must set the file to use within your view before rendering');
    }
 
    // Combine local and global data and capture the output
    return View::capture($this->_file, $this->_data);
}