Can anyone tell me if this example would be considered a secure method for authentication using sessions. The login page is a form to validate the user and begin the session. The second bit of code is at the top of every page to authenticate the user. I can't figure out if this is the best way. Thanks login page: --------------------------------------- if($action=="validate"){ // Form submitted so check userid and password against database $query="SELECT memberid,name,lastname from members WHERE userid = '$userid' and password = '$password'"; $result=mysql($database,$query); $rows=mysql_num_rows($result); if ($rows == 0){ $err_no=100; // bad userid or password header("Location:login.php?err_no=$err_no"); exit(); }else{ // Input validated issue session id $rs=mysql_fetch_array($result); $name=$rs["name"]; $lastnamename=$rs["lastname"]; $memberid=$rs["memberid"]; session_register("name"); session_register("lastname"); session_register("memberid"); header("Location:mem_welcome.php"); exit(); } } if ($err_no==100){ $login_header="User ID or Password do not match"; }else if ($err_no==200){ $login_header="Please Log In Again"; }else { $login_header="Please Log In"; } <html> Print out the login form here </html top of page to authenticate user: ---------------------------------------------------- session_register("memberid"); if (!isset($memberid) && !isset($PHPSESSID)){ $err_no=200; header("Location:login.php?err_no=$err_no"); exit(); } -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]