[PHP] What type of PHP5 shall I install to learn PHP5 together with Apache, Please specify the Apache type too Since There are Two Apache types also

I am Using Ubuntu 11.04 Desktop as my OS.Below are the two types of PHP5 available for installation php5 - server-side, HTML-embedded scripting language (metapackage) php5-cgi - server-side, HTML-embedded scripting language (CGI binary) I got the above by running the command "apt-cache search PHP

[PHP] After editing only the httpd.conf PHP 5.2.12 works in Apache2.2 on WindowsXP Professional 2002 SP 3, Can this be?

I Edited only the httpd.conf file and the changes I made were Added: LoadModule php5_module "C:/PHP/php-5.2.12/php5apache2_2.dll" Changed DocumentRoot and Directory from htdocs to test: DocumentRoot "C:/Program Files/Apache Software Foundation/Apache2.2/test" and Added the following AddType app

[PHP] What is the difference between the two streams 5.3 and 5.2 versions and What is the need for maintaining two streams?

Since there are two stable versions 5.3 and 5.2 .What is the difference between these two streams and What is the need for maintaining two streams?