Comment 15 for bug 439407

I have this bug too. I updated from Ubuntu 9.04 to Ubuntu 9.10 Beta. All was OK on 9.04, but now with 9.10 I can't unzip a file on my local server. Here are some infos:

The code <?php var_dump(function_exists("gzopen")); ?> displays:
bool(false)

$ uname -a
Linux ordi 2.6.31-14-generic #46-Ubuntu SMP Tue Oct 13 16:47:59 UTC 2009 i686 GNU/Linux

$ php -m
[PHP Modules]
bcmath
bz2
calendar
ctype
date
dba
dom
exif
filter
ftp
gd
gettext
hash
iconv
json
libxml
mbstring
mcrypt
mime_magic
mysql
mysqli
ncurses
openssl
pcntl
pcre
PDO
pdo_mysql
posix
readline
Reflection
session
shmop
SimpleXML
soap
sockets
SPL
standard
sysvmsg
sysvsem
sysvshm
tokenizer
wddx
xml
xmlreader
xmlwriter
zip
zlib

[Zend Modules]