subscribe() subscribe(array<mixed,string> $channels, callable $callback) : void Parameters array<mixed,string> $channels callable $callback The callback will get two arguments ($channel, $message)
psubscribe() psubscribe(array $patterns, callable $callback) Parameters array $patterns callable $callback The callback will get two arguments ($channel, $message)
publish() publish(string $channel, string $message) : integer Parameters string $channel string $message Returns integer — Number of clients that received the message