Question

Aftr a submit code is run it should perform this code below:

session_start();

if(isset($_POST['sessionNum'])) {
            //Declare my counter for the first time

            $_SESSION['initial_count'] = $_POST['sessionNum'];
            $_SESSION['sessionNum'] = intval($_POST['sessionNum']);
            $_SESSION['sessionCount'] = 1;
 }
 else if (isset($_POST['submitDetails']) && 
       $_SESSION['sessionCount'] < $_SESSION['sessionNum']) {
    $_SESSION['sessionCount']++;
 }

$sessionMinus =  $_SESSION['sessionCount'];

When I echo the code below:

<?php echo $sessionMinus ?> OF <?php echo $_SESSION['initial_count'] ?>

Everytime a submit button is clicked on, if the number for $sessionMinus is less than the number $_SESSION['initial_count'], then it should the number for $sessionMinus by 1 each time the page has been submitted.

But it is not adding the number by 1 at all. $sessionMinus just keeps outputting ‘1’ each time page is submitted. What do I need to change in my code?

I performed a var_dump($_SESSION); and this is what it outputted:

array(3) { 
   ["sessionCount"]=> int(1) 
   ["initial_count"]=> string(1) "5" 
   ["sessionNum"]=> int(5) 
}

Answer 1

Debug it as follows:

session_start();

var_dump( $_POST, $_SESSION ); //See that the post and session parameters you think should be there, really are there.
if(isset($_POST['sessionNum'])) {
            //Declare my counter for the first time

            $_SESSION['initial_count'] = $_POST['sessionNum'];
            $_SESSION['sessionNum'] = intval($_POST['sessionNum']);
            $_SESSION['sessionCount'] = 1;
 }
 else if (isset($_POST['submitDetails']) && 
       $_SESSION['sessionCount'] < $_SESSION['sessionNum']) {
    var_dump( $_SESSION['sessionCount'] ); //check the current count (and that you really are here.
    $_SESSION['sessionCount']++;
    var_dump( $_SESSION['sessionCount'] ); // Check that the count is updated correctly.
 }

$sessionMinus =  $_SESSION['sessionCount'];