Bug in PHP after form submit

[Anon]

how come my variable is missing after i hit submit button.

is it a bug from PHP ?

i had a variable called $paper=\"book\"
after i hit submit button from FORM

the $paper value become nothing

[rulian]

when you submit a form, what ever variables that the page does not create, or that you do not define, disappear. if it's not an element in your form, either text, select or hidden, then it will not pass along with the variables in your form. You can easily solve this by adding <input type=hidden name='paper' value='$paper'> inside your form. Or if you need something more complex, assign it into a session, or a cookie, that should hold the informatin bewteen pages

[Anon]

can u let me know what should i read regarding the SESSION functioiin ?

[Anon]

The page u go to after u hit submit button, is it's extension 'php'?Does your host support 'PHP'?try to use echo in that page and see what comes.
i.e.
<?
echo "$paper";
?>

[Anon]

there are session tutorials all over the shop, webmonkey's is fairly decent

the important thing to remember is to call

start_session();

BEFORE any kind of html on the page, and it has to be on every page to make the session stay alive across those pages

use

session_register("paper_storage");
to make $paper_storage available as a session variable, then set

$paper_storage=$paper;

bingo, echo $paper_storage on any page and you will get that variable.
oh and use session_destroy(); to kill all session variables if you want to make it time out or stop somewhere

[nagasea]

okay i figure it out how to use it in my program.
Thanks Rulian, Mike & Kiddie

I use the post type=hidden for this things, and it's working