class.upload.php is a powerful and mature PHP class to manage uploaded files, and manipulate images in many ways. The script is available under a GPL license.
He can write a one line php file that will display the phpinfo like:
phpinfo(); ?>
As for the chroot environment, dunno what he's talking about as there's not something like that for PHP, so the answer would be no.
He may be thinking about safe mode though, as you know, php 4 is using safe mode, but php5 does not.
They could also be asking about open_base_dir which is common for upload gadgets, they need to use move_uploaded_file() instead of trying to read the temp directory directly. This is common for older scripts.
As for the chroot environment, dunno what he's talking about as there's not something like that for PHP, so the answer would be no.
He may be thinking about safe mode though, as you know, php 4 is using safe mode, but php5 does not.
They could also be asking about open_base_dir which is common for upload gadgets, they need to use move_uploaded_file() instead of trying to read the temp directory directly. This is common for older scripts.
What error is he getting?