Swoole\WebSocket\Server::exist
(PHP 5 >= 5.2.0, PHP 7, PECL swoole >= 1.9.0)
Swoole\WebSocket\Server::exist — Check if the the file description is existed.
说明
public Swoole\WebSocket\Server::exist
( integer
$fd
) : boolean
参数
-
fd -
返回值