Fixes the issue when using cache:clear with PhpRedis and a clustered Redis instance, by updating the PhpRedisConnection flushdb method to use the already open/configured clients. (#36665)

Author: J5Dev

src/Illuminate/Redis/Connections/PhpRedisConnection.php

@@ -484,14 +484,8 @@ public function flushdb()
             return $this->command('flushdb');
         }
 
-        foreach ($this->client->_masters() as [$host, $port]) {
-            $redis = tap(new Redis)->connect($host, $port);
-
-            if (isset($this->config['password']) && ! empty($this->config['password'])) {
-                $redis->auth($this->config['password']);
-            }
-
-            $redis->flushDb();
+        foreach ($this->client->_masters() as $master) {
+            $this->client->flushDb($master);
         }
     }