# uname -a
Linux zabbix-server 2.6.18-400.1.1.el5.centos.plus #1 SMP Thu Dec 18 08:14:55 EST 2014 x86_64 x86_64 x86_64 GNU/Linux

# lsb_release -a
LSB Version:	:core-4.0-amd64:core-4.0-ia32:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-ia32:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-ia32:printing-4.0-noarch
Distributor ID:	CentOS
Description:	CentOS release 5.11 (Final)
Release:	5.11
Codename:	Final

# yum info php53
Loaded plugins: fastestmirror, replace, rhnplugin
This system is receiving updates from RHN Classic or Red Hat Satellite.
Loading mirror speeds from cached hostfile
Installed Packages
Name       : php53
Arch       : x86_64
Version    : 5.3.3
Release    : 26.el5_11
Size       : 3.4 M
Repo       : installed
Summary    : PHP scripting language for creating dynamic web sites
License    : PHP and LGPLv2 and LGPLv2+
Description: PHP is an HTML-embedded scripting language. PHP attempts to make it
           : easy for developers to write dynamically generated webpages. PHP also
           : offers built-in database integration for several commercial and
           : non-commercial database management systems, so writing a
           : database-enabled webpage with PHP is fairly simple. The most common
           : use of PHP coding is probably as a replacement for CGI scripts.
           :
           : The php package contains the module which adds support for the PHP
           : language to Apache HTTP Server.

# yum info zabbix-web-mysql.x86_64
Loaded plugins: fastestmirror, replace, rhnplugin
This system is receiving updates from RHN Classic or Red Hat Satellite.
Loading mirror speeds from cached hostfile
Installed Packages
Name       : zabbix-web-mysql
Arch       : x86_64
[B]Version    : 2.2.3[/B]
Release    : 1.el5
Size       : 0.0
[B]Repo       : installed[/B]
Summary    : Zabbix web frontend for MySQL
License    : GPLv2+
Description: Zabbix web frontend for MySQL

[B]Available Packages[/B]
Name       : zabbix-web-mysql
Arch       : x86_64
[B]Version    : 2.2.8[/B]
Release    : 1.el5
Size       : 13 k
Repo       : zabbix-centos5-x86_64
Summary    : Zabbix web frontend for MySQL
License    : GPLv2+
Description: Zabbix web frontend for MySQL