Observable from function

[nicraMarcin]

Hi,

$devices = ['192.168.10.11','192.168.10.21','192.168.10.22','192.168.10.23', ...];

function getSnmp($ip, $community, $oid) {
 $snmp = new SNMP(SNMP::VERSION_2C, $ip, $community);
  return $res = $snmp->get($oid);
}

foreach ($devices as $device){
 return getSnmp($device['ip'], public, 'OID');
}

I have this synchronous code. I'm trying various methods to create this as asynchronous but I couldn't manage with it.
Could anybody help me create observable from this function getSnmp() ?

[David Dan]

@nicraMarcin if SNMP() is not async, RxPHP won't make it async.

[nicraMarcin]

I know that SNMP isn't async but snmp is only example and this can be any function which takes some time to execute. for example http (curl) or something like that:

function test($x) {
  sleep(rand(1,10);
  return uniqd();
}
foreach ($array as $a){
  $res = test($a);
  // do anything with result
}

so this is sync code. with async I don't want to wait for previous function ends but execute another, subscribe and wait for results, like in RxJS and HttpClient I execute request, do next stuff and wait for response to come and do something with recieved data.

executing function once there is no sense to make this async because in a result I have to wait for a result. but when this function is executing x times in a loop (foreach in this case) async make sense because many functions will execute in almost the same time.

Is it possible to make function observable?

[David Dan]

RxPHP will not help you make synchronous code asynchronous. It's simply a library that allows you to compose synchronous or asynchronous streams.

You might want to look into swoole