Capturing a sql query

I'm trying to capture a sql query and save it to the
database.  Not as a stored procedure , more a URL
parameter string , to be called up at will.

I have this code that I believe will take the URL,
just not sure how to go about grabbing it.  I think
maybe a hidden form with POST.

I'm open to any ideas or help. :)

$ReturnPage = isset($_SERVER["REQUEST_URI"]) ?
$_SERVER["REQUEST_URI"] : "";
if(!strlen($ReturnPage)) {
$ReturnPage = isset($_SERVER["SCRIPT_NAME"]) ?
$_SERVER["SCRIPT_NAME"] : "";
$QueryString = CCGetQueryString("QueryString", "");
if($QueryString !== "")
$ReturnPage .= "?" . $QueryString;

Thank you,
Stuart