<?php

$server = new swoole_websocket_server("0.0.0.0", 9501);

$server->on('open', function (swoole_websocket_server $server, $request) {

   echo "server: handshake success with fd{$request->fd}\n";

});

$server->on('message', function (swoole_websocket_server $server, $frame) {

   echo "receive from {$frame->fd}:{$frame->data},opcode:{$frame->opcode},fin:{$frame->finish}\n";

   $server->push($frame->fd, "this is server");

});

$server->on('close', function ($ser, $fd) {

   echo "client {$fd} closed\n";

});

$server->start();