help with foreach()

[taantle]

I'm trying to loop through a multi-dimensional array and I keep getting this error:

Warning: Invalid argument supplied for foreach() in foo.php on line 17

I am developing a shopping cart and want to put each purchases item in an array in the $SESSION. I have tried a hundred different ways of looping the $SESSION and none seem to work. Here are some snippets:

Add an Item:

    $_SESSION['Products'][$_POST['ProductID']]['NUM'] = 1;
    $_SESSION['NUMITEMS']++;

Display Cart:

foreach ($_SESSION['Products'] as $i ) {
echo "Current value $i<br>";
}

[planetsim]

foreach ($_SESSION['Products'] as $key => $i ) {
  echo "Current value $i<br>";
}

Try that.

[taantle]

Thank you, that worked. Now my sessions are expiring too soon but that's a different problem altogether.... Thank you!