I ran Gabriel's test above and had different results. I did find differences in the objects. For instance:
'val' => string(7) "4542.32"
'valD' => double(4542.32)
But, I think this could be resolved. Fairly easily.
The main issue with the test was that one port is used. I ran another instance of memcached on a different port and changed the code slightly. I used this code and had better success:
$servers = array(array('localserv', 11212));
$memcache = new Memcache;
$memcacheD = new Memcached;
$memcache->addServer('localserv', 11211);
$memcacheD->addServers($servers);
$memcacheD->setOption(Memcached::OPT_BINARY_PROTOCOL, true);
$checks = array(
123,
4542.32,
'a string',
true,
array(123, 'string'),
(object)array('key1' => 'value1'),
);
foreach ($checks as $i => $value) {
print "Checking WRITE with Memcache\n";
$key = 'cachetest' . $i;
$memcache->set($key, $value);
usleep(100);
$val = $memcache->get($key);
$valD = $memcacheD->get($key);
if ($val !== $valD) {
print "Not compatible!";
var_dump(compact('val', 'valD'));
} else {
print "WAS COMPAT\n";
}
print "Checking WRITE with MemcacheD\n";
$key = 'cachetest' . $i;
$memcacheD->set($key, $value);
usleep(100);
$val = $memcache->get($key);
$valD = $memcacheD->get($key);
if ($val !== $valD) {
print "Not compatible!";
var_dump(compact('val', 'valD'));
} else {
print "WAS COMPAT\n";
}
}