PHP5.2 for ubuntu

New ubuntu come with PHP5.3. If you need php5.2 to run your old application you have 3 ways.

1) use karmic repository
http://randyfay.com/node/63

2) use .deb
http://thejibe.com/blog/10/10/php-5210-debs-ubuntu-1010-maverick

3) use launchpad respository
https://launchpad.net/~txwikinger/+archive/php5.2