Passing vars in a link ?

From: Pjotr Wedersteers (x33159_at_westerterp.com)
Date: 08/31/04 

Date: Tue, 31 Aug 2004 18:22:53 +0200

Hello again,

I have now several consecutive forms in my site which nicely pass variables
in POST, so they won't show up in the header.
Now I have a page people reach after submitting all kinds of information,
from where I offer a link users can click on.
Let's say I have collected several strings and I have put these in an array
and serialized that.

$var[0]='John Doe';
$var[1]='2345 Livnigston Ave';
$var[2]='Boston';
$var[3]='Plumber';
$data = serialize ($var);

When the user clicks the (only) link on this page, all this serialized data
needs to be passed along to the new page.
I did this:

(...)
// $data contains the serialized array
echo "<a href='action.php?data=$data'>go here</a>";

First question: using this method the $data is passed via GET. I would
prefer to keep using POST, and not have ugly tell-tale headers. Is that
possible using PHP? How? [I'd rather not use sessions here which would avoid
the entire datapassing issue.]

Second question: when I echo back $data in the action.php script, it seems a
chunk of the string is missing. Is that due to a limit in length ? How long
a string can be passed as a single var ? Different for GET vs POST ? Like it
is unserialize returns FALSE, which makes sense, as the data is incomplete.

Help appreciated. If you need more specifics, I'm happy to elaborate.
Pjotr

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