[Resolved] Passing an array though $_POST

[thefile]

Ok, pardon me if I screw this up, this is my first post here.

I'm trying to pass an associative array to the next page though $_POST.
<?
$save_array = array(
first_name=>$first_name,
last_name=>$last_name);
?>
.
.
.
<input type="hidden" name="save" value="<? echo $save_array;?>">

....in the target file:
<?
$save_array = $_POST["save"];
echo $save_array[first_name][0];
echo $save_array[last_name][0];
?>

I get nothing.

[laserlight]

you will probably need to use serialize() on the array first.

[thefile]

I read the on-line PHP manual for serialize(). The notes recommend that I use base64_encode or url_encode on the serialized data before passing it through $_POST.
Will I be able to associate the array data after unserialize() ?

[Pig]

Yes, just use the corresponding reverse functions to unserialize. Read the user contributed notes. I believe you don't have un-url encode, but I might be smoking crack.