yes i do know how to insert statements this is mine
mysql_select_db("lachlanmcgrath", $con);
$sql="INSERT INTO tracker (Date, Time, Amonia, Nitrite, Nitrate, PH, Salinity, Tempreture)
VALUES
('$_POST[Date]','$_POST[Time]','$_POST[Amonia]','$_POST[Nitrite]','$_POST[Nitrate]','$_POST[PH]','$_POST[salinity]','$_POST[Tempreture]')";
if (!mysql_query($sql,$con))
{
die('Error: ' . mysql_error());
}
echo "1 record added";
mysql_close($con);
?>
I'm trying to get at, with the insert what would i put into there for it to insert the logged in user_id