FileInfo not working in php 5.3.3

I'm making a simple call to finfo_open() and I get:

"Call to undefined function finfo_open()"

Isn't FileInfo packaged with php 5.3.3 (Unix). Do I need to turn it on in php.ini?

Thanks

It looks like you could get it enabled but you're missing some constants. These are the values from my system:

FILEINFO_NONE = 0
FILEINFO_SYMLINK = 2
FILEINFO_MIME = 1040
FILEINFO_MIME_TYPE = 16
FILEINFO_MIME_ENCODING = 1024
FILEINFO_DEVICES = 8
FILEINFO_CONTINUE = 32
FILEINFO_PRESERVE_ATIME = 128
FILEINFO_RAW = 256

Maybe it helps.

Depends really, the php on your server might have been compiled without it for some reason.

create a new .php file and put the infamous <? phpinfo(); ?> and check to see if that extension is compiled in.