sUnion

PHP Redis

sUnion

Description

Performs the union between N sets and returns it.

执行一个并集操作在N个SET容器之间,并返回结果。

Parameters

Keys: key1, key2, ... , keyN: Any number of keys corresponding to sets in redis.

Return value

Array of strings: The union of all these sets.

返回一个数组

Example
$redis->delete('s0', 's1', 's2');

$redis->sAdd('s0', '1');
$redis->sAdd('s0', '2');
$redis->sAdd('s1', '3');
$redis->sAdd('s1', '1');
$redis->sAdd('s2', '3');
$redis->sAdd('s2', '4');

var_dump($redis->sUnion('s0', 's1', 's2'));

Return value: all elements that are either in s0 or in s1 or in s2.

array(4) {
  [0]=>
  string(1) "3"
  [1]=>
  string(1) "4"
  [2]=>
  string(1) "1"
  [3]=>
  string(1) "2"
}