Trouble with eaccelerator and Klein

[tarampampam]

I have installed Apache + PHP on production server:

$ httpd -v
Server version: Apache/2.4.6 (CentOS)
Server built:   Nov 19 2015 21:43:13

$ php -v
PHP 5.4.16 (cli) (built: Jun 23 2015 21:17:27)
Copyright (c) 1997-2013 The PHP Group
Zend Engine v2.4.0, Copyright (c) 1998-2013 Zend Technologies
    with eAccelerator v1.0-dev, Copyright (c) 2004-2012 eAccelerator, by eAccelerator

And i catched an error:

PHP Fatal error:  require(): Failed opening required '' (include_path='.:/usr/share/pear:/usr/
share/php') in /{path}/vendor/klein/klein/src/Klein/Klein.php on line 382

While opening any page. On line 382 we can find:

    public function with($namespace, $routes)
    {
        $previous = $this->route_factory->getNamespace();

        $this->route_factory->appendNamespace($namespace);

        if (is_callable($routes)) {
            if (is_string($routes)) {
                $routes($this);
            } else {
                call_user_func($routes, $this);
            }
        } else {
            require $routes;
         // ^^^^^^^^^^^^^^^^
        }

        $this->route_factory->setNamespace($previous);
    }

Ok. Lets look into my code:

// App::Router() = class Router extends \Klein\Klein {}
App::Router()->with('/', function () {
  App::Router()->respond('', function () {
    // ...
  });
  App::Router()->respond('pages/[*:page].[*:ext]?', function ($request) {
    // ...
  });
});

So, to function with($namespace, $routes) must be passed anonymous function (callable).

Just for testing i added var_dump(is_callable($routes)); die(); after $this->route_factory->appendNamespace($namespace); in function with($namespace, $routes).

Testing on local server (Windows, Apache 2.2.31, PHP 5.3.29 without eaccelerator):

bool(true)

Testing on test server (CentOS, Apache 2.4.6, PHP 5.4.16 without eaccelerator):

bool(true)

Testing on production server (CentOS, Apache 2.4.6, PHP 5.4.16 with eaccelerator):

bool(false)

False? WTF? As a quick fix i added to .htaccess:

<IfModule mod_php5.c>
  php_flag eaccelerator.enable 0
  php_flag eaccelerator.optimizer 0
</IfModule>

And then all works nornally. But - whats happend? And how i can fix this without disableing php eaccelerator?

Update 1:
eAccelerator not compatible with anonymous function/closure under php 5.4.6

Update 2:
Added this code to project init:

if (ini_get('eaccelerator.enable')) {
  ini_set('eaccelerator.enable', 0);
  ini_set('eaccelerator.optimizer', 0);
}

Update 3:
eAccelerator removed from production server. Installed ZendOPcache:

$ nano /etc/php.d/eaccelerator.ini
# comment all lines
$ yum install php-pecl-zendopcache
$ service httpd restart