Credit card trans. w/ AuthorizeNet

Anon

I am trying to set up a custom credit card processor with PHP for a client. I am told be AuthorizeNet that I need to send them a form in post format to a specific address. My first question is: how do I do this?

After my form is processed they send me back a form in post format that I need to do something with. I'm not sure what variables are being send to me so I don't think I can use $HTTP_POST_VARS. Does anyone know how to get ALL variables sent in post format in this situation? Any help is much appreciated. Thank you

Robert

Anon

to send;

in the html form
<form action="authorize.net/topage.html?mysite=robert">
etc.......

to get the POST variables:
foreach($HTTP_POST_VARS as $POSTKEY=>$POSTVAL) {
if(is_array($POSTVAL)) {

foreach ($POSTVAL as $SUBPOSTKEY=>$POSTSUBVAL) {
    $smarty->assign('POST_SUB_KEY_ARRAY' . $POSTKEY . $SUBPOSTKEY,$POSTSUBVAL);
}

}else {
$smarty->assign('POST_KEY_' . $POSTKEY,(string)$postval);
}

}//end foreach($HTTP_POST

Anon

One thing that may or may not be important that I left out. I am receiving this via the exec command, like this:

exec("$path_to_curl -d \"$cc_string\" $processing_url", $return_string);

where $return_string is the response from the other server. Any ideas are welcome on this one. I am really in a crunch for time on this so any help from anyone is greatly appreciated. Thanks

Robert