Hello, I need some help to diagnose and determine what is causing this problem and (most importantly) how to correct it. Here is the error. (I get a whole bunch just like this.. always the "undefined index: [i]variable_name[/i]" [quote]PHP Notice: Undefined index: [b]pasv [/b] in C:\xxx_path_xxx\domain.org\zzzzz\autoinstaller.php on line 87[/quote] Here is the code on line 87: [code]if ($_GET['pasv'] == "on") { $_SESSION['ftp_passive'] = "on"; }[/code] I believe the php error is caused because php is trying to "use" an undefined variable (called [i]pasv[/i]) for the first time, and the php config is somehow set to produce this warning. This is becoming more and more common to see now, and it seems to happen when my users have to re-install PHP. So I think there is some setting in a more recent "default' php installation which is causing this. Does anyone have any idea what setting or configuration value can be set in PHP to "turn off" this warning? (I tried setting the error_reporting(0); but that did not stop it.) Or must I rewrite my entire PHP program to "declare" all variable before they are used? Thanks for any help.