Multiple PHP pages in One

[bschwartz]

I'm not sure the best way to ask this question since I am still learning PHP, but here goes.

I've got a number of functions setup, and I have an "action" variable that I am trying to use to make the page execute a certain set of functions based on my action variable. (Hope that makes sense)

My question is, how can I get this action variable to check when a user the submit button, and also check certain criteria on the form?

Thanks for any suggestions!!!

if ($_POST['action'] != "") {
  $action = $_POST['action'];
}

if ($action == "") {
// retrieve data from database to use in working space -- and continue to step1 with the form, etc.
  database_errors();
  database_open();
  check_variables ();
  database_queries();
  database_close();
  $action = "step1";
} else {
// trying to setup environment with previous form data here.
  get_superglobal_vars_from_POST( --A BUNCH OF VARIABLES--);
}

//Step 1 - Blank form
if ($action=="step1") {
  html_header();
	print "This is step 1";
  form_logo();
  form_employee();
  form_work_order();
  form_work_order();
  form_work_order();
  form_work_order();
  form_work_order();
  form_work_order();
  html_table_form_footer();
  check_variables ();
  html_footer();
}

// More steps in a similar fashion...

[alanzhao]

maybe this;

if (!empty($_POST['action'])) {
    $action = $_POST['action'];
} else {
    $action = "default_step";
}


switch ($action) {
           case "default_step":
                     function1();
                     function2();
            break;
            case "step2":
                     function1();
                     function2();
            break;
            default:

                break;
}