sudo apt-get install php5-memcache
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
  php5-memcache
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 44.8 kB of archives.
After this operation, 135 kB of additional disk space will be used.
Get:1 http://packages.dotdeb.org/ squeeze-php54/all php5-memcache amd64 5.4.7-1~dotdeb.0 [44.8 kB]
Fetched 44.8 kB in 0s (219 kB/s)
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
Selecting previously unselected package php5-memcache.
(Reading database ... 64094 files and directories currently installed.)
Unpacking php5-memcache (from .../php5-memcache_5.4.7-1~dotdeb.0_amd64.deb) ...
Processing triggers for php5-fpm ...
[ ok ] Restarting PHP5 FastCGI Process Manager: php5-fpm.
Setting up php5-memcache (5.4.7-1~dotdeb.0) ...
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory

Creating config file /etc/php5/mods-available/memcache.ini with new version
Preserving user changes to /etc/php5/mods-available/memcache.ini (renamed from /etc/php5/conf.d/memcache.ini)...
/var/lib/dpkg/info/php5-memcache.postinst: 22: local: not in a function
dpkg: error processing php5-memcache (--configure):
 subprocess installed post-installation script returned error exit status 2
Processing triggers for php5-fpm ...
[ ok ] Restarting PHP5 FastCGI Process Manager: php5-fpm.
Errors were encountered while processing:
 php5-memcache
E: Sub-process /usr/bin/dpkg returned an error code (1)



carl@linuxlounge:~$ sudo apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = (unset),
        LC_ALL = (unset),
        LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
Setting up php5-memcache (5.4.7-1~dotdeb.0) ...
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
/var/lib/dpkg/info/php5-memcache.postinst: 22: local: not in a function
dpkg: error processing php5-memcache (--configure):
 subprocess installed post-installation script returned error exit status 2
Processing triggers for php5-fpm ...
[ ok ] Restarting PHP5 FastCGI Process Manager: php5-fpm.
Errors were encountered while processing:
 php5-memcache
E: Sub-process /usr/bin/dpkg returned an error code (1)