PHP, MySQL, Win2k, and IIS

arioch

Hello,

I have PHP 4.06 and MySQL 3.23 installed on a Win2k SP2 Professional server running IIS5.0. Everything works just fine, but for one thing. The PHP environment doesn't preregister or allow reference to nondefined variables at runtime, either environment or script specific.

For example, when I try to check for the existence of the environment variable QUERY_STRING using the following code

if (!$QUERY_STRING) { code };

if ($QUERY_STRING == "") { code };

I get an undefined variable warning. When I check the PHP environment with phpinfo() there is no QUERY_STRING variable listed. However, when I run phpinfo() on an Apache server, QUERY_STRING is listed, albeit empty.

If I try to do the same with script variables, the same thing happens.

I also get warnings when I try to reference an undefined index in an array.

The script continues to process as normal, I just don't want to see the warning message. I turned off warnings in php.ini, but now I don't get ANY warnings at all.

Does anyone know how to reference variables that are undefined, whether environment or local, on IIS like Apache does?

Thanks!

mithril

Chris,

Variables like QUERY_STRING, REQUEST_URI, etc. are actually Apache variables created as an easier method of accessing some of the HTTP_SERVER_VARS environment variables and IIS doesn't create them. Rather on IIS, and Apache, you access them like so: $HTTP_SERVER_VARS["QUERY_STRING"]. I tend to write most of my code referencing the variables that way since it eases the transition if I need to run on IIS. The warnings are being reported due to the error reporting settings in your php.ini file. To reduce the amount of reporting, or log to an error file, as you should in a production environment you can change this level in php.ini. You can also override this on a script execution level using the ini_set() method. On a varible level you can prevent errors from being printed using the "@" symbol. For example:

   if (!@$QUERY_STRING) { code };

   if (@$QUERY_STRING == "") { code };

HTH.

geoff

arioch

I will try as you suggest, I hope it does the trick!