--enable-track_vars on Windows

rfkm

I need to have php configured with --enable-track_vars in order for some scripts to work. I'm using version 5.0.2 build 2600 on Windows XP SP2. The 'Configure Command' from phpinfo is:
cscript /nologo configure.js "--enable-snapshot-build" "--with-gd=shared"

In php.ini, I have added:
track_vars = On

My scripts work on a Linux system when the 'Configure Command' from phpinfo has '--enable-track_vars' so I know it isn't the scripts.

Any ideas how to configure the binary installation of Windows to includ this feature?

Thanks

tsinka

Hi,

first of all track_vars is always enabled as of PHP 4.0.3. But I tested that and t seems like there's a bug in PHP on Windows.

The following script for example prints an empty array on my Windows system:

<?PHP
print_r($HTTP_ENV_VARS);
?>

The following script prints the array correctly:

<?PHP
$a=$_ENV;
print_r($HTTP_ENV_VARS);
?>

I do nothing with $ENV ... just assign it to a variable. After that $HTTP_ENV_VARS is printed correctly. So it seems like you need e.g. to access $ENV once in any way in order to make the PHP module to fill the $HTTP_ENV_VARS array.

I have PHP 5.0.1 installed. I don't know if that problem also exists in PHP 4.x

Thomas

tsinka

Ok,

I was able to solve the problem by changing

variables_order = "GPCS"
to
variables_order = "EGPCS"

in php.ini.

If you don't add E (Environment) then the $HTTP_ENV_VARS array will not be set automatically. But it will be filled as soon as you acces the environment variables with $_ENV.

I'm still not sure if that should be seen as a bug ...

EDIT: shame on me ... I should've read the manual

.... If certain variables in variables_order are not set, their appropriate PHP predefined arrays are also left empty.....

Thomas

rfkm

Well, I guess I was wrong. My problem doesn't seem to be the track_vars variable. The errors I'm seeing are:

undefined variable: var not found in otherfile.php

Warning: cannot modify header information -- headers already sent in otherfile.php

Again, this same script is running on a Linux box with Apache2 and php439 with no errors. My system is WinXP with Apache2 and php439.

Why am I so different?

tsinka

Ok,

in that case check if the setting of register_globals is different on both systems. Additionally, check for any differences regarding the setting of error_reporting.

Where does the undefined variable come from ? Is it a POST or GET variable (form or query string) ?

The header error message is caused by the "undefined variable" warning because that it output sent to the browser and you can't send any headers if any output has been sent to the browser prior to the header function call.

Thomas