Help on Warning: extract() expects first argument to...

Hi all!

I've got a problem with an upload php script.
The script which gets called from an upload - file page returns the following warning:

Warning: extract() expects first argument to be an array in [...] at line [xx]

The code at this line:

extract($_FILES['userfile'],EXTR_PREFIX_ALL,'uf');

The same code runs fine on my machine (windows with an older php version), but someone who uses my script gets this warning.

I would be glad if someone could help me with this message!
Maybe it has something to do with the $_FILES variable in newer php versions?

Thanks in advance

Hotkey

my firs thought would be that variable doesnt exist.

maybe because they are using an older version of php when _FILES didnt exist

or maybe their host doesnt allow file uploads/php.ini set in some way that prevents _FILES from being set.

i would give them this
<?php phpinfo(); ?>

and tell them to upload it, and let you take a look at the config.

Thanks 4 answer.
I'll try /let them try this!