Description:
------------
I can't make compression work in v1.3 (didn't try earlier versions).. :/

Whenever I store something compressed I get a null/false when I try to get it back...

I have zlib-support enabled in PHP.  Running PHP 5.0.2-dev (cvs). I've also tried with 5.0.1 but the same problem exists...  Running memcached 1.1.11.

Reproduce code:
---------------
#!/usr/bin/php
<?php

$cache = memcache_connect('127.0.0.1', 11211);

$x = array( "Testing ...", 1, 2, 3);
echo gettype($x) . "\n";
print_r($x) . "\n";

$cache->set('testing', $x, MEMCACHE_COMPRESSED, 0);
$x = $cache->get('testing');

echo gettype($x) . "\n";
print_r($x) ."\n";


Expected result:
----------------
array
Array
(
    [0] => Testing ...
    [1] => 1
    [2] => 2
    [3] => 3
)

array
Array
(
    [0] => Testing ...
    [1] => 1
    [2] => 2
    [3] => 3
)

Actual result:
--------------
array
Array
(
    [0] => Testing ...
    [1] => 1
    [2] => 2
    [3] => 3
)
boolean