要使用PHP和WebSocket獲取實時數據，您需要先創建一個WebSocket服務器來接收和發送實時數據。
以下是一個簡單的示例代碼，您可以使用PHP和Ratchet庫來創建WebSocket服務器：
composer require cboden/ratchet
<?php
require 'vendor/autoload.php';
use Ratchet\MessageComponentInterface;
use Ratchet\ConnectionInterface;
class MyWebSocketServer implements MessageComponentInterface {
protected $clients;
public function __construct() {
$this->clients = new \SplObjectStorage;
}
public function onOpen(ConnectionInterface $conn) {
$this->clients->attach($conn);
echo "New connection! ({$conn->resourceId})\n";
}
public function onMessage(ConnectionInterface $from, $msg) {
foreach ($this->clients as $client) {
if ($client !== $from) {
$client->send($msg);
}
}
}
public function onClose(ConnectionInterface $conn) {
$this->clients->detach($conn);
echo "Connection {$conn->resourceId} has disconnected\n";
}
public function onError(ConnectionInterface $conn, \Exception $e) {
echo "An error has occurred: {$e->getMessage()}\n";
$conn->close();
}
}
$server = new \Ratchet\Server\IoServer(
new \Ratchet\Http\HttpServer(
new \Ratchet\WebSocket\WsServer(
new MyWebSocketServer()
)
),
8080
);
echo "WebSocket server started\n";
$server->run();
php server.php
<!DOCTYPE html>
<html>
<head>
<title>Real-time Data</title>
</head>
<body>
<ul id="messages"></ul>
<script>
var conn = new WebSocket('ws://localhost:8080');
conn.onmessage = function(e) {
var messages = document.getElementById('messages');
var message = document.createElement('li');
message.innerHTML = e.data;
messages.appendChild(message);
};
</script>
</body>
</html>
將index.html文件放在您的Web服務器上，并打開它以連接到WebSocket服務器并接收實時數據。您可以在WebSocket服務器的onMessage方法中發送實時數據并在客戶端接收和顯示。
