Split and Explode problem.

Hi ! I'm trying to create a page that will display system information about my server. Thought it would be quite cool to display such info and a good place to start getting aquianted with PHP. I'm now busy trying to display what users are logged on to the system (I know not good for security reasons but the computer isn't world connected). For this I'm using the "exec("/usr/sbin/w",$arr,$result);" command. This stores the information that "w" prints in an array. The problem is that the text printed by "w" sin't that web friendly. So I thought that I could format the text myself and print it in a table. Looking around in the PHP manual, I found explode and split. These are quite cool functions, but I have a little problem with them. The "w" command is keen on using " " chars for displaying text and using explode, that gets me an array with about 36 entries in it when all I need is 8. I tried with the split function with the "[A-Za-z0-9@\t] " to get the info I wanted. This did of course work, but the last character of each word was also lost :-( Is there an easy way to get what I want or will I have to manually step through eac string and create my own array of values ?? /Jocke!