PHP Notice: Undefined property: swoole_http_request::$get

Question

Why does the following notice message still appear?
PHP Notice: Undefined property: swoole_http_request::$get in /var/local/code/swoole/ws_server.php on line 8
PHP Stack trace:
PHP 1. {main}() /var /local/code/swoole/ws_server.php:0
PHP 2. swoole_http_server->start() /var/local/code/swoole/ws_server.php:23
PHP 3. {closure:/var/local/code/swoole/ws_server.php:7-10}() /var/local/code/swoole /ws_server.php:23

//Create a websocket server object and listen to port 0.0.0.0:9502
$ws = new swoole_websocket_server("0.0.0.0", 9502);

//Listen to the WebSocket connection open event
$ws->on('open', function ($ws, $request) {
    var_dump($request->fd, $request->get, $request->server);
    $ws->push($request->fd, "hello, welcome\n");
});

//Listen to WebSocket message events
$ws->on('message', function ($ws, $frame) {
    echo "Message: {$frame->data}\n";
    $ws->push($frame->fd, "server: {$frame->data}");
});

//Listen to the WebSocket connection closing event
$ws->on('close', function ($ws, $fd) {
    echo "client-{$fd} is closed\n";
});

$ws->start();

js code

var wsServer = 'ws://127.0.0.1:9502';
var websocket = new WebSocket(wsServer);
websocket.onopen = function (evt) {
    console.log("Connected to WebSocket server.");
};

websocket.onclose = function (evt) {
    console.log("Disconnected");
};

websocket.onmessage = function (evt) {
    console.log('Retrieved data from server: ' + evt.data);
};

websocket.onerror = function (evt, e) {
    console.log('Error occurred: ' + evt.data);
};

Answer 1

The sixth line of ws_server.php, the request object has no get method

Answer 2

The first request is for favicon.ico，这里没有getthis attribute. You can just filter out this request.