A simple newbie question

Hello. I started writing PHP today.
I added the following code at a php page.
<?php
if($_SESSION["dbpwd"]=="")
{
print("EMPTY!");
$_SESSION["dbpwd"]="TEST";
print(" SET TO ".$_SESSION["dbpwd"]);
}
else
{
print($_SESSION["dbpwd"]);
}
?>
I thought if I refreshed the page, then dbpwd would set to "TEST" and
"TEST" would be displayed. But it didn't work. What's wrong? I'd like
to keep some variables that only are good for the sessioin.

check your php.ini settings for sessions. if all seems to be okay then
make sure you are initializing sessions at the start of your php
scripts. like...session_start() or equivilent function. also check
how your sessions are being saved (on the server, cookies). if
cookies, check browser settings to make sure you are allowing cookies
to be saved on your machine.

wrote:
> Hello. I started writing PHP today.
> I added the following code at a php page.
> <?php
> if($_SESSION["dbpwd"]=="")
> {
> print("EMPTY!");
> $_SESSION["dbpwd"]="TEST";
> print(" SET TO ".$_SESSION["dbpwd"]);
> }
> else
> {
> print($_SESSION["dbpwd"]);
> }
> ?>
> I thought if I refreshed the page, then dbpwd would set to "TEST" and
> "TEST" would be displayed. But it didn't work. What's wrong? I'd like
> to keep some variables that only are good for the sessioin.