Clearing Session Variable 1

[ZOR]

If I have this:

$_SESSION['DB6'] = $_POST['DB6']

Then how do I do this:

$_SESSION['DB6'] = ""

or

$_SESSION['DB6'] = 0

Regards

 

[sleipnir214]

If you want the variable to go away completely, try:

unset ($_SESSION['DB6']);

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[ZOR]

Many thanks sleipner, will try that, only problem then is can I check for the variable $_SESSION['DB6'] not being there when I produce a documented list of variables and their values if greater then 0 or "".

At the moment I do this:

if ($_SESSION['DB6']>0) {
echo "Fuji Digital Betacam DBC-6 Qty =".$_SESSION['DB6']."<br>\n";
}
if ($_SESSION['DB12']>0) {
echo "Fuji Digital Betacam DBC-12 Qty =".$_SESSION['DB12']."<br>\n";
}

Which is an orderly list.

Many thanks

 

[sleipnir214]

if you have done an unset() on a variable and you then reference that variable in a condition as you are doing here:

if ($_SESSION['DB6']>0) {

then PHP will generate a warning about the fact that the array index no longer exists.

When I'm checking for the existence or non-existence of a variable I use isset():

if (isset($_SESSION['DB6'])) {

or array_key_exists():

if (array_key_exists('DB6', $_SESSION)) {


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TANSTAAFL!!

 

[ZOR]

Thanks very much sleipnir, just what I wanted, another star.