Hey,

When using rawCommand with RedisCluster you pass the key or a host/port combination as the initial argument, which tells RedisCluster where to deliver the query:

Example:

$rc = new RedisCluster(NULL, ['127.0.0.1:7000']);

$ret = $rc->rawCommand('mykey', 'zadd', 'mykey', 'nx', 1, 'foo');
var_dump($ret);

So it uses the first argument above mykey to send (in my case) the query to port 7002.

127.0.0.1:7002> zrange mykey 0 -1 withscores
1) "foo"
2) "1"

I could be missing something though. 😃

Hi michael,

Thanks for the reply.
Passing key as the 1st argument indeed work. 👍

I had tried to pass the cluster node info as 1st argument of rawCommand() on my previous test.
Ex.
$rc->rawCommand('127.0.0.1:700', 'zadd', 'mykey', 'nx', 1, 'foo');
$rc->rawCommand(array('127.0.0.1'. '7000'), 'zadd', 'mykey', 'nx', 1, 'foo');
Both failed w/ false or SIGSEG.

Just recheck the phpredis source and find out the port part must be passed as LONG to make it work.
NG : array('127.0.0.1', '7000')
OK : array('127.0.0.1', 7000)
I had been spoiled by php's loosing typing for awhile... Orz

One more thing to be noticed.
The host, port mapping must be correct to make rawCommand() work.
If I changed array('127.0.0.1', 7000) to array('127.0.0.1', 7001), I'll get a SIGSEG.

The following is the strace result for SIGSEG, it seemed the rawCommand implement didn't handle "MOVED" response nicely.
Maybe this topic should be renamed to "SIGSEG if passing wrong array(host, port) to redisCluser->rawCommand()" . XD

connect(4, {sa_family=AF_INET, sin_port=htons(7001), sin_addr=inet_addr("127.0.0.1")}, 16) = -1 EINPROGRESS (Operation now in progress)
poll([{fd=4, events=POLLIN|POLLOUT|POLLERR|POLLHUP}], 1, 60000) = 1 ([{fd=4, revents=POLLOUT}])
getsockopt(4, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
fcntl(4, F_SETFL, O_RDWR) = 0
setsockopt(4, SOL_TCP, TCP_NODELAY, [1], 4) = 0
poll([{fd=4, events=POLLIN|POLLPRI|POLLERR|POLLHUP}], 1, 0) = 0 (Timeout)
sendto(4, "*3\r\n$3\r\nSET\r\n$9\r\nRCTest:ZS\r\n$44\r"..., 79, MSG_DONTWAIT, NULL, 0) = 79
poll([{fd=4, events=POLLIN|POLLPRI|POLLERR|POLLHUP}], 1, 0) = 0 (Timeout)
poll([{fd=4, events=POLLIN|POLLERR|POLLHUP}], 1, 60000) = 1 ([{fd=4, revents=POLLIN}])
recvfrom(4, "-MOVED 12795 127.0.0.1:7000\r"..., 8192, MSG_DONTWAIT, NULL, NULL) = 33
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++
Segmentation fault

Fixed SIGSEG, thanks @responder-tw