Posted by Erwin Moller on 12/05/06 11:50

Nico wrote:

> Dear all,
>
> I created the following php form.
>
> <FORM METHOD="POST" ACTION="prova.php">
> <b>Combination</b><br><br>
> Element 1: <INPUT NAME="el1" TYPE="TEXT">
> <BR>
> Element 2: <INPUT NAME="el2" TYPE="TEXT">
> <br>
> <INPUT TYPE="SUBMIT" VALUE"Submit">
> </FORM>
> <br>
> Combination<br><br>
>
> <?php
> $combination[] = ($_REQUEST["el1"].$_REQUEST["el2"]);
> print_r($combination);
> $combinations[] = $combination;
> print_r($combinations);
> ?>
>
> When I fill the two text fields of the form in the browser, the inserted
> text is included in the array $combination and then $combination is
> included in the array $combinations.
> When I reload the page, I fill again the two text fields and the new
> inserted text overwrites the old inserted text. This is a problem.
> I'd like that the array "combinations" includes both the old inserted
> text and the new inserted text, but I don't know how to do this.
> Can you help me please?
> Many thanks.
>
> Best,
> Nico

Hi Nico,

The problem lies in the fact that you expect your array to exist next time
you call the page.
This is NOT the case.
PHP is invoked per request, and all variables are initialized fresh each
invocation. PHP does NOT remember what you did in your last script.

If you want PHP to remember values from one invocation to the next, use
sessions.
Learn more about them here:
http://nl3.php.net/manual/en/ref.session.php

Regards,
Erwin Moller

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