Hey,

So I found a nice post about upgrading to php 5.

http://www.lunarforums.com/index.php/topic,41213.0.html
Quote:
"
############################
# install yum:
############################
rpm -ihv --nodeps http://mirror.centos.org/centos-4/4.4/os/i386/CentOS/RPMS/yum-2.4.3-1.c4.noarch.rpm
rpm -ihv --nodeps http://mirror.centos.org/centos-4/4.4/os/i386/CentOS/RPMS/python-elementtree-1.2.6-

4.2.1.i386.rpm
rpm -ihv --nodeps http://mirror.centos.org/centos-4/4.4/os/i386/CentOS/RPMS/python-urlgrabber-2.9.8-2.noarch.rpm
yum makecache

###########################
# enable centosplus
###########################
   vim /etc/yum.repos.d/CentOS-Base.repo
   enabled=1

###########################
# install gcc
###########################
yum remove glibc-dummy-centos-4
yum install gcc
yum install gcc-c++

###########################
# upgrade httpd from 2.0.52 -> 2.0.59, php5 mysql5
###########################
yum update httpd
yum update php"

But even after following those direction up to the portion about php5 I get this error:
Error: Missing Dependency: php-common = 5.1.6-3.el4s1.5 is needed by package php-xml

And my phpinfo() still says php4

How do I fix it? I need php5 to run an API. Any help would be appreciate, thanks.

you need to stop apache 1st then upgrade php etc.