Personally I'm lazy, but I'd probably go with something along the lines of
$filename = sprintf("step%d.php", (int)($_SESSION['step']) );
require ( file_exists($filename) ? $filename : "step1.php" );
same results in two lines of code - was one line, but I split it into
two lines to make it more readable, although tbh in production code,
I'd add an array_key_exists, to make sure that $_SESSION['step'],
actually exists. It also scales up to as many steps as you like, so
long as they're all in the stepNUMBER.php format. I don't think there
is any need for both a %d formatter and (int) typecasting, but it's
generally best to take every reasonable precaution when you're
including/requireing files.
On 5/12/05, dan <info@xxxxxxxxxxxxxxxx> wrote:
> Hello, all -
>
> I've been researching how to handle forms properly, and I think I
> figured out a way that might be beneficial for me to use. It is as follows:
>
> (index.php)
>
> session_start();
> if (isset($_SESSION['step'])) {
> switch $_SESSION['step'] {
> case "1":
> require('step1.php');
> break;
> case "2":
> require('step2.php');
> break;
> case "3":
> require('step3.php');
> break;
> // add more case statements here if I need to
> default:
> require('step1.php');
> break;
> }
> } else {
> $_SESSION['step'] = '1';
> require('step1.php');
> }
>
> Each stepX.php file would look something similar to this:
>
> (step1.php)
>
> // if submitted, check data for completeness
> // if complete, set 'step' to 2, to be used as argument to index.php
> $_SESSION['step'] = '2'
> // redirect back to index.php, use new value of 'step' to direct
> header('Location: http://somesite.com/index.php');
> // else display form data
>
> Now, this is, really, one of my first experiences with doing forms. I
> just want to know if I can/should/would anticipate any problems down the
> road while doing this. I think it would work quite well, but I've only
> been doing this for a short while.
>
> Thanks!
> -dant
>
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