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PHP Installation Tutorial: We know, PHP have 2 major version that dominate. Although we should use 'modern' version (PHP5), but PHP4 still more dominate at hosting services. In this post, We will try to install 2 version in one computer.

For this practice, we use appserv php package installer. You can download 2 version PHP4 and PHP5 at appservnetwork. For PHP4, you can download appserv 2.4.xx version. For PHP5, you can download appser 2.5.xx version.

First, install appserv 2.4.xx. It is really easy. Just open installer file and follow instruction. But, give attention at server information page. You will be asked port for http. Default, using 80. I suggest you change this port, example 8040 (Next PHP5 installation, we use 8050). Go a head, until finished.

Now, install appserv 2.5.xx. You just follow instruction after open installer file. Stop at server information. Change port 80 to (example)8050. Go a head.

It is realy easy. Now, you have two version PHP in your computer. You just call by pointing your browser to:

http://localhost:8040/ -> for PHP4
or
http://localhost:8050/ -> for PHP5

unfortunately (or fortunately), they use one (same) mysql database server. You will get mysql version 5.