yum list installed | grep php
php.i386                            5.3.10-5.el5.art                   installed
php-cli.i386                        5.3.10-5.el5.art                   installed
php-common.i386                     5.3.10-5.el5.art                   installed
php-devel.i386                      5.3.10-5.el5.art                   installed
php-gd.i386                         5.3.10-5.el5.art                   installed
php-imap.i386                       5.3.10-5.el5.art                   installed
php-mbstring.i386                   5.3.10-5.el5.art                   installed
php-mysql.i386                      5.3.10-5.el5.art                   installed
php-pdo.i386                        5.3.10-5.el5.art                   installed
php-pear.noarch                     1:1.8.1-2.el5.centos               installed
php-soap.i386                       5.3.10-5.el5.art                   installed
php-xml.i386                        5.3.10-5.el5.art                   installed
php-zend-guard-loader.i386          5.5.0-3.el5.art                    installed

php -v
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/modules/apc.so' - /usr/lib/php/modules/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php/modules/apc.so' - /usr/lib/php/modules/apc.so: cannot open shared object file: No such file or directory in Unknown on line 0
PHP 5.3.10 (cli) (built: Feb  3 2012 08:09:39) 
Copyright (c) 1997-2012 The PHP Group
Zend Engine v2.3.0, Copyright (c) 1998-2012 Zend Technologies
    with Zend Guard Loader v3.3, Copyright (c) 1998-2010, by Zend Technologies