In some cases, it may be needed to extract files with an additional p switch:

  tar -zxvpf pmwiki-latest.tgz

This document needs some clarification. At one point it says to create an index.php file with the text:

 <?php include('pmwiki.php');  

A few lines down, it says to create a file with the text:

 <?php include_once('pmwiki.php');  

I'm unsure which is correct.

Both will work exactly the same way in this case. In other cases, like recipes in the Cookbook?, we use include_once(); . --Petko? September 07, 2009, at 04:16 PM