Swoole\Timer::exists

(PECL swoole >= 1.9.0)

Swoole\Timer::exists — Check if a timer is existed.

public static function Swoole\Timer::exists(int $timer_id): bool

Checks whether a timer with the given ID exists in the current process.

timer_id: The timer ID returned by Swoole\Timer::tick() or Swoole\Timer::after().

Returns true if a timer with this ID exists in the current process, false otherwise.