Expected behaviour

That getKeys & keys work the same way on RedisArray. keys-function do not work at all currently.

Actual behaviour

keys-Function returns always:

[$server => UNKNOWN:0]

I'm seeing this behaviour on

• OS: Debian Stretch
• Redis: Redis server v=3.2.8
• PHP: 7.1.31-1+020190807.22+debian91.gbpf402ed (Sury-Repo)
• phpredis: php-redis 5.0.2+4.3.0-1+020190808.13+debian91.gbpcc7e06 (Sury-Repo)

Steps to reproduce, backtrace or example script

<?php
$redis = new \RedisArray(['localhost:6379']);
echo 'keys-function' . PHP_EOL;
var_dump($redis->keys('*integration'));
echo 'keys-function from variable' . PHP_EOL;
$keys = $redis->keys('*integration');
var_dump($keys);
echo 'getKeys-function' . PHP_EOL;
var_dump($redis->getKeys('*integration'));
echo 'empty-Array' . PHP_EOL;
var_dump([]);

Output:

keys-function
array(1) {
  ["localhost:6379"]=>
  UNKNOWN:0
}
keys-function from variable
array(1) {
  ["localhost:6379"]=>
  UNKNOWN:0
}
getKeys-function
array(0) {
}
empty-Array
array(0) {
}

I've checked

• There is no similar issue from other users
• Issue isn't fixed in develop branch
  Not tested the development branch but changelog does not notify anything about that issue.