The variables you mention are used to build the $where_form_is variable. I have yet to find where this variable is used. I did at one point delete this line from the process.php file when I got the same errors. I detected no unusual behavior or other errors. Since then I have created more forms but have not had to delete this line. These variables are gathered from your server so the issue is with your server software.
Go ahead and delete the line it should still work. Follow up with a question to your ISP to see if they can help resolve the error.
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Notice: Undefined variable: SERVER_NAME in D:\Inetpub\wwwroot\forms\process.php on line 25
Notice: Undefined variable: PHP_SELF in D:\Inetpub\wwwroot\forms\process.php on line 25
Shows up after form submitted on the Thank You page.....is installed on IIS with PHP 4.3.8
The variables you mention are used to build the $where_form_is variable. I have yet to find where this variable is used. I did at one point delete this line from the process.php file when I got the same errors. I detected no unusual behavior or other errors. Since then I have created more forms but have not had to delete this line. These variables are gathered from your server so the issue is with your server software.
Go ahead and delete the line it should still work. Follow up with a question to your ISP to see if they can help resolve the error.