Session variables

I'm experimenting with sessions and note that you seem to able pass a query result id via an include but not via an <a href=...>. Is this correct or have I got it wrong? Do I need to do something to $session[result] before passing it via <a href>? Example scripts: session.phtml: $connection = mysql_connect($DBHost,$DBUser,$DBPass); mysql_select_db("$DB"); session_start(); session_register("session"); $session["result"]=mysql_query("select * from $TA"); $rows = mysql_num_rows($session[result]); echo "Rows in session = $rows<BR>"; echo "<a href ='sessionrows.phtml?rows=$rows'>Pass</a><BR>"; echo "<a href ='sessionresultid.phtml?resultid=$session[result]'>Send</a><BR>"; include ("sessionresult.phtml"); sessionrows.phtml: echo "<br> Rows in sessionrows = $rows"; sessionresultid.phtml: $rows = mysql_num_rows($resultid); echo "<br> Rows in sessionresultid = $rows"; sessionresult.phtml: $rows = mysql_num_rows($session[result]); echo "Rows in sessionresult = $rows<BR>"; Output from session.phtml reads: Rows in session = 7 Pass Send Rows in sessionresult = 7 Clicking on Pass outputs "Rows in sessionrows = 7" as expected. But Clicking on Send outputs the "Warning: Supplied argument is not a valid MySQL result resource ..." error. I also get this when I click Back from either sessionrows.phtml or sessionresultid.phtml. Again not sure why? Any help gratefully received. Mick Lloyd mjl@consultingrooms.com Tel: +44 (0)1684 560224