Didn't work.
I've installed a fresh box and restored last valid backup.
But still can't use Zend Optiomizer.
After installing xcache nothing changed, the same "Zend Optimizer not installed".
php -v
PHP 5.3.28 (cli) (built: May 6 2014 10:13:47)
Copyright (c) 1997-2013 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2013 Zend Technologies
with XCache v3.1.0, Copyright (c) 2005-2013, by mOo
with XCache Optimizer v3.1.0, Copyright (c) 2005-2013, by mOo
with XCache Cacher v3.1.0, Copyright (c) 2005-2013, by mOo
with XCache Coverager v3.1.0, Copyright (c) 2005-2013, by mOo
sh /script/sysinfo
A. Kloxo-MR: 6.5.0.f-2014051901
B. OS: CentOS release 6.5 (Final) i686
C. Apps:
1. MySQL: mysql55-5.5.37-1.ius.el6.i686
2. PHP: php53u-5.3.28-3.ius.el6.i686
3. Httpd: httpd-2.2.27-1.el6.i686
4. Lighttpd: --uninstalled--
5. Nginx: --uninstalled--
6. Qmail: qmail-toaster-1.03-1.3.38.mr.el6.i386
- with: courier-imap-toaster-4.1.2-1.3.16.mr.el6.i386
7. Dns: bind-9.9.5-1.el6.i686
D. Php-type (for Httpd/proxy): php-fpm_event
E. Memory:
total used free shared buffers cached
Mem: 1893 1668 224 0 225 1026
-/+ buffers/cache: 416 1477
Swap: 4063 0 4063