php-memcached-dev/php-memcached — pull request #74 by blat (2013-05-01 17:35:24+00:00)
Title: Memcached::get() always return NOT_FOUND on error

From https://github.com/php-memcached-dev/php-memcached/issues/9

addServer('localhost', 5555); // Server should not exist

$result = $memcached->get('foo');
echo $memcached->getResultMessage() . "\n";

Result: `NOT FOUND`
Expected: `SERVER IS MARKED DEAD`

Note: `$memcached->get('foo', null, $cas)` works.