PHP programming forum. Ask questions or help people concerning PHP code. Don't understand a function? Need help implementing a class? Don't understand a class? Here is where to ask. Remember to do your homework!
You make the layout using HTML and CSS. PHP is a language that runs on the server. You can use it to access files and databases on the server using PHP. You can also generate HTML to send to the browser.
CSS is the acronym for cascading style sheets. I get the impression that you just want to build a HTML page that has the header and two columns. And, you want the two columns to be the width of the stripes on you background image. Correct?
Have you searched the web for "CSS two column layout" ? If that does not help, we can walk through how to create you page here if you like.