GetOpName - Hhvm — ContextQMD

:::info[Note] This is a point-in-time snapshot of the API documentation from January 2026. Going forward, we will not be maintaining a public copy of these references, and recommend users to refer to the built-in signature helpers available in the Hack LSP instead for complete and up-to-date information. :::

Translate an mc_op_* numeric code to something human-readable

Hack

public static function getOpName(
  int $op,
): string;

Parameters

int $op

Returns

string - - The name of the op

Examples

The following example shows how to use MCRouter::getOpName to get the English readable name for an MCRouter operation given as an integer.

Here is the list of the current mappings:

Integer	Constant	Returned String
0	MCRouter::mc_op_unknown	unknown
1	MCRouter::mc_op_echo	echo
2	MCRouter::mc_op_quit	quit
3	MCRouter::mc_op_version	version
4	MCRouter::mc_op_servererr	servererr
5	MCRouter::mc_op_get	get
6	MCRouter::mc_op_set	set
7	MCRouter::mc_op_add	add
8	MCRouter::mc_op_replace	replace
9	MCRouter::mc_op_append	append
10	MCRouter::mc_op_prepend	prepend
11	MCRouter::mc_op_cas	cas
12	MCRouter::mc_op_delete	delete
13	MCRouter::mc_op_nops	nops
14	MCRouter::mc_op_incr	incr
15	MCRouter::mc_op_decr	decr
16	MCRouter::mc_op_flushall	flushall
17	MCRouter::mc_op_flushre	flushre
18	MCRouter::mc_op_stats	stats
19	MCRouter::mc_op_verbosity	verbosity
20	MCRouter::mc_op_lease_get	lease-get
21	MCRouter::mc_op_lease_set	lease-set
22	MCRouter::mc_op_shutdown	shutdown
23	MCRouter::mc_op_end	end
24	MCRouter::mc_op_metaget	metaget
25	MCRouter::mc_op_exec	exec
26	MCRouter::mc_op_gets	gets
27	MCRouter::mc_op_get_service_info	get-service-info

basic-usage.hack

function get_simple_mcrouter(): \MCRouter {
  $servers = Vector {\getenv('HHVM_TEST_MCROUTER')};
  $mc = \MCRouter::createSimple($servers);
  return $mc;
}

function get_op_name(int $op_num): string {
  return \MCRouter::getOpName($op_num);
}

<<__EntryPoint>>
async function run(): Awaitable<void> {
  $mc = get_simple_mcrouter();

  // You can pass raw integers
  \var_dump(get_op_name(3));
  \var_dump(get_op_name(9));
  \var_dump(get_op_name(-1));
  \var_dump(get_op_name(0));
  \var_dump(get_op_name(100));

  // You can pass MCRouter constants
  \var_dump(get_op_name(\MCRouter::mc_op_servererr));
  \var_dump(get_op_name(\MCRouter::mc_op_exec));
  \var_dump(get_op_name(\MCRouter::mc_op_unknown));

  // You can pass something from an exception too
  try {
    $val = await $mc->get('KEYDOESNOTEXISTIHOPEREALLY');
  } catch (\MCRouterException $ex) {
    \var_dump($ex->getOp());
    \var_dump(get_op_name($ex->getOp()));
  }
}
```.hhvm.expectf
string(7) "version"
string(6) "append"
string(7) "unknown"
string(7) "unknown"
string(7) "unknown"
string(9) "servererr"
string(4) "exec"
string(7) "unknown"
int(5)
string(3) "get"
```.example.hhvm.out
string(7) "version"
string(6) "append"
string(7) "unknown"
string(7) "unknown"
string(7) "unknown"
string(9) "servererr"
string(4) "exec"
string(7) "unknown"
int(5)
string(3) "get"
```.skipif
\Hack\UserDocumentation\API\Examples\MCRouter\skipif();