[Solved] Incrementing and resetting a PHP session variable

by


You write PHP in the middle of some JavaScript functions as if you expect it to be executed by the JavaScript itself.

If you remove the HTML/JS output, you can see what actually happens on the server as soon as you load the page (I assume your code snippets are in order):

session_start();
if (!isset($_SESSION['score'])) 
    $_SESSION['score'] = 0;

if (!isset($_SESSION['skipped'])) 
    $_SESSION['skipped'] = FALSE;

if($_SESSION['skipped'] == TRUE){
    $_SESSION['score'] = 0;
    $_SESSION['skipped'] = !$_SESSION['skipped'];
}
$x = $_SESSION['score'] + 1;
$_SESSION['score'] = $x;

$q = TRUE;
$_SESSION['skipped'] = $q;

On the first page load with an empty session, this will set $_SESSION['score'] to 0 (because it’s not set yet), then increment it to 1, then set $_SESSION['skipped'] to true.

On subsequent page loads, it will set $_SESSION['score'] to 0 (because skipped is set), then increment it again to 1 and finally setting skipped to true again (you see: nothing changed)

1

solved Incrementing and resetting a PHP session variable