How to install PHP5.2 into newest versions of Ubuntu

install-php53.sh

#!/bin/bash

## read http://askubuntu.com/questions/61101/downgrade-php-to-php5-2
## read http://www.alexweber.com.br/en/tutorials/how-install-php-52-ubuntu-1010-lucid-and-1104-natty

# sudo apt-add-repository ppa:andphe/php
# sudo apt-get update

## find sources.list and replace your dist name by "lucid" for this ppa
## read http://serverfault.com/questions/52029/how-to-force-downgrade-of-packages-on-ubuntu-karmic
## read https://help.ubuntu.com/community/PinningHowto#Apt.2BAC8-Dpkg
## see https://launchpad.net/~andphe/+archive/ppa/+packages

PACKAGES="libapache2-mod-php5 php5-common php5-cli php5 php-pear php5-cgi php5-curl php5-dbg php5-dev php5-gd php5-gmp php5-ldap php5-mhash php5-mysql php5-odbc php5-pgsql php5-pspell php5-recode php5-snmp php5-sqlite php5-sybase php5-tidy php5-xmlrpc php5-xsl"

for PACKAGE in $(echo $PACKAGES | tr " " "\n")
do
    echo "[INSTALLING $PACKAGE]"
    apt-get install "$PACKAGE=5.2.17.dfsg.1-0ubuntu0ppa3~lucid"
    
    echo "[HOLDING VERSION OF $PACKAGE]"
    echo "$PACKAGE" hold | dpkg --set-selections
    echo
    echo
    echo
done

apt-get update
apt-get upgrade

/etc/init.d/apache2 restart