Php/docs/swoole-http-server.on
From Get docs
Swoole\Http\Server::on
(PECL swoole >= 1.9.0)
Swoole\Http\Server::on — Bind callback function to HTTP server by event name.
Description
public Swoole\Http\Server::on
( string $event_name
, callable $callback
) : void
Bind callback function to HTTP server by event name.
Parameters
event_name
callback