Błąd PHP

Wystąpienie błędu

            {
                $indexesString .= "['{$indexes[$i]}']";
            }
        }

        $anonymousFunction = create_function('$array', "
            if(isset(\$array$indexesString))
                return \$array$indexesString;
            else
                return null;
        ");

        return $anonymousFunction($this->_config);
    }
}

Backtrace

#	Method	File	Line
10	System\Handler\PHPError\PHPErrorHandler->showError()	/parowozownia/System/Framework/Config/Config.php	111
9	System\Framework\Config\Config->getConfig()	/parowozownia/System/HTTP/Session/DatabaseSessionStorage.php	90
8	System\HTTP\Session\DatabaseSessionStorage->__construct()
7	ReflectionClass->newInstanceArgs()	/parowozownia/System/DependencyInjection/ServiceManager.php	310
6	System\DependencyInjection\ServiceManager->_getClassWhithVariablesParameters()	/parowozownia/System/DependencyInjection/ServiceManager.php	260
5	System\DependencyInjection\ServiceManager->getService()	/parowozownia/System/DependencyInjection/ServiceManager.php	305
4	System\DependencyInjection\ServiceManager->_getClassWhithVariablesParameters()	/parowozownia/System/DependencyInjection/ServiceManager.php	260
3	System\DependencyInjection\ServiceManager->getService()	/parowozownia/System/Framework/Kernel.php	109
2	System\Framework\Kernel->init()	/parowozownia/System/Framework/Kernel.php	121
1	System\Framework\Kernel->run()	/parowozownia/index.php	96

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