.php file read whole script?

[Mudsaf]

Hello, i'm wondering could i make index page with ALOT of functions depending on get parameter.

 

Example

if (isset($_GET['para1'])) {Readthis}if (isset($_GET['para2'])) {Ignorethis}//So does php page read all scripts and data inside them or just para1 if my browser has ?para1=blaa at URL. So better to seperate pages or could i merge them all "kinda" in 1 spot?

[justsomeguy]

You can put them in one script if you want to. It might be difficult to maintain that down the line, but there's not really a technical limitation with doing that.