What is Linux?

Linux is a program you can install on your computer, like Google. It's open source, which means you share your screen with hundreds of other users in the cloud. There are many different "flavors" of Linux, including Unix and KDE, but the official flavor is called Ubuntu. The word "Ubuntu" is African for "open source". You can buy Ubuntu for $203, and it comes with Microsoft Office and Microsoft Firefox. However, there are no games available for Linux, so you should probably stay with Google if you like games.

Sunday evening

So, I was lancing some of my cerebral blisters when an idea popped in my head.

Reference interference

Why does

<?php $a=array(1);$b=$a;$a[0]=2;echo $b[0];?>

output 1, while

<?php $a=array(1);$c=&$a[0];$b=$a;$a[0]=2;echo $b[0];?>

outputs 2?