Description:
------------
gcc 4.6.3
Memcache 2.2.7

Very little changes made to php.ini that shouldn't effect issue.

'./configure' '--with-apxs2=/usr/local/apache2/bin/apxs' '--with-freetype-
dir=/usr/include/freetype2/freetype' '--with-jpeg-dir=/usr/include' '--with-xsl' 
'--with-zlib' '--enable-sockets' '--with-openssl' '--with-mysql' '--with-mcrypt' 
'--enable-mbstring' '--enable-bcmath' '--enable-calendar' '--with-curl' '--with-
gd' '--with-bz2' '--enable-exif' '--enable-ftp' '--with-gettext' '--with-mhash' 
'--with-mysqli' '--enable-soap' '--enable-wddx' '--enable-zip' '--with-pdo-
mysql' '--with-gmp' '--enable-shmop'

Memcache does not seem to be storing an empty array. I know this may not seem 
needed but I'm storing response from an API that is turned into an array. A 
valid response may be empty which I would like to store.

Test script:
---------------
$mem = new Memcache();
$emptyarr = array();
$mem->add('ABCDEF12345', $emptyarr, true, 1800);

// $mem->get('ABCDEF12345') == false

Expected result:
----------------
Should return an empty array.

$mem->get('ABCDEF12345') == array();

Actual result:
--------------
Getting false.