Even or odd number validation with PHP

The other day, while I was writing up some PHP code, I ran into a really cool way of identifying if a number is even or odd (refer to the link further down below). I needed it as I looped the creation of a couple of divs and wanted the odd numbered ones to be floated left, the evens to the right. So I found the following article, a very simple solution: Check if a Number is Even or Odd with PHP