I made use of this guide on Apple's web site to enable PHP on my small computer however i lost my Apache configuration files in process. I went this script that we available on Google to revive Apache on Mac OS X:

#!/bin/sh
# run with ./apache_refresh.sh
#If permissions error do: chmod u+x filename.sh
#WARNING THIS MAY DELETE OR CHANGE YOUR APACHE SETTING SO BACKUP IF YOU HAVE ANYTHING YOU WANT TO SAVE


echo "*******************************   Starting Apache Server Refresh - Leopard"

#make a temp directory to work with, you can change this if you choose
echo "*******************************   Creating the source folder"
mkdir ~/Desktop/apache-temp
cd ~/Desktop/apache-temp

#get current apache version, update or change if necessary 
echo "*******************************   Downloading Apache Server"
curl -O http://www.gtlib.gatech.edu/pub/apache/httpd/httpd-2.2.11.tar.gz

#if you change the apache version above be sure to change it here as well
echo "*******************************   Extracting Apache Server"
tar xzvf httpd-2.2.11.tar.gz
cd httpd-2.2.11

#you can change the default install paths, "Darwin" is the default leopard install, if you don't know what this means then don't change this!
echo "*******************************   Configuring Darwin Layout"
./configure --enable-layout=Darwin \
--enable-mods-shared=all \
--with-ssl=/usr \
--with-mpm=prefork \
--disable-unique-id \
--enable-ssl \
--enable-dav \
--enable-cache \
--enable-proxy \
--enable-logio \
--enable-deflate \
--with-included-apr \
--enable-cgi \
--enable-cgid \
--enable-suexec

#make the files
echo "*******************************   Compiling Apache Server"
make

#install the files
echo "*******************************   Installing Apache Server"
sudo make install

#backup hosts file
echo "*******************************   Backing up hosts file"
cd /private/etc
sudo cp hosts hosts.backup

#delete hosts file
echo "*******************************   Deleting Hosts File"
sudo rm hosts

echo "*******************************   Creating New Hosts File"
cd ~/Desktop/apache-temp
cat > hosts << EOF
##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting.  Do not change this entry.
##
127.0.0.1   localhost
255.255.255.255 broadcasthost
::1             localhost 
fe80::1%lo0 localhost
EOF

#move new hosts file to /etc dir
echo "*******************************   Moving Hosts Filer"
sudo mv ~/Desktop/apache-temp/hosts /etc

#set hosts file permissions
echo "*******************************   Setting Hosts File Permissions"
cd /private/etc
sudo chown root hosts

#backup httpd.conf file
echo "*******************************   Backing up httpd.conf File"
cd /private/etc/apache2
sudo cp httpd.conf httpd.conf.backup

#delete to httpd.conf file
echo "*******************************   Deleting httpd.conf File"
sudo rm httpd.conf

#copy httpd.conf file from originals folder
echo "*******************************   Copying New httpd.conf File"
cd original
sudo cp httpd.conf /private/etc/apache2/httpd.conf

#backup httpd-vhosts.conf file
echo "*******************************   Backing up httpd-vhosts.conf File"
cd /private/etc/apache2/extra
sudo cp httpd-vhosts.conf httpd-vhosts.conf.backup

#copy httpd-vhosts.conf file from originals extra folder
echo "*******************************   Copying New httpd-vhosts.conf File"
cd /private/etc/apache2/original/extra
sudo cp httpd-vhosts.conf /private/etc/apache2/extra/httpd-vhosts.conf

#remove the temp folder
echo "*******************************   Remove the temp folder"
rm -R ~/Desktop/apache-temp

echo "*******************************   Starting Apache Server"
sudo apachectl start

echo "*******************************   Done"

Apache was restored, however the httpd.conf file in /etc/apache2 does not appear to appear such as the httpd.conf Leopard includes. Consequently I can not follow the majority of the Leopard specific guides on the web. Can there be in whatever way through which I possibly could restore Apache 2 + PHP to Leopard defaults?

things i wound up doing after i were built with a similar situation ended up being to pull the files I desired from the pkg files around the OS X install disk. In my opinion the appropriate files reside in a package named BSD, which you'll extract using unpkg. Then, discover the files you would like and copy these to the installed locations manually.

Use Pacifist together with your Leopard disk. It is good at re-installing specific items of the body.