# yum list installed | grep httpd
If it is not installed, execute the following command.
# yum install httpd
# yum list installed | grep php
If it is not installed, execute the following command.
# yum install php-*5.3*
# vi /etc/php.ini
If you can't find php.ini in etc directory, you can search with the following command.
# php -i
default=path = "UTF-8" mbstring.language = English mbstring.internal_encoding = UTF-8 mbstring.http_input = auto mbstring.http_output = pass mbstring.encoding_translation = off
S.Yatsuzuka