Dynamic variable problem

jodie

Hi folks, my first post on this board, but hopefully not my last!

I'm building a Flash-based app at the moment, and have run into a bit of a problem with the PHP scripting. It's probably a no-brainer, but I'm tired, and a fresh mind on the case might sort the problem quicker!

I'm setting a variable dynamically, and then assigning it a value. The problem comes when I try to extract this value; how do I get hold of it?

When I code echo $$varName, I get absolutely nothing back in Flash, but if I change this to $varName, I get the variable's name (i.e. categories2)

Does anyone have an idea of what trick I'm missing?

Here's my code:

$varName = "categories" . $i;
$$varName = $_POST[$$varName];
$rsp = $$varName;

Your help would be grately appreciated, as it's getting late here in England!

Jodie

Houdini

You are passing by reference why?

jodie

It's ok now, solved the problem!

Decided to opt for extract() and then just made sure all my vars had unique IDs coming out of Flash.

Passing by reference, as I'll never be sure how many vars I'm dealing with, but I think the workaround does the trick.

Cheers!

jodie

I'm further down the line with my code than I was the last time I posted, but I've encountered another problem. My FOR loop doesn't appear to execute unless I add a numerical value as the condition (as opposed to a variable).

Example:

extract($_POST, EXTR_PREFIX_SAME, "myVar");

// $expectedItems is created, with a value of 8

for($i=0; $i<$expectedItems; $i++){
$varName1 = "itemIdArray" . $i;
$varName2 = "itemCatArray" . $i;
$varName3 = "itemTitleArray" . $i;
$varName4 = "itemDescArray" . $i;
$varName5 = "itemLocationArray" . $i;
$varName6 = "itemImgArray" . $i;

    // Do some stuff with these variables

}[/COLOR]

If I swap $expecteItems for the value '10' in the loop conidtion, the loop runs 10 times, as would be expected. So why doesn't it work with the variable, which clearly has a value of '8'??? I'm thinking this must be a problem with the typing of the variable, but I though variables in PHP weren't strictly typed?

I'm nearly there, and any help would be gratefully received!