In what scenarios would using Sockets be more beneficial than traditional Ajax requests in PHP for real-time updates?

Using Sockets would be more beneficial than traditional Ajax requests in PHP for real-time updates when you need to establish a persistent connection between the client and server to enable real-time communication without the overhead of repeatedly opening and closing connections. Sockets allow for bidirectional communication, making them ideal for scenarios where instant updates are crucial, such as chat applications, live sports scores, or stock market updates.

// PHP code snippet using Sockets for real-time updates
$host = '127.0.0.1';
$port = 8080;

$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_bind($socket, $host, $port);
socket_listen($socket);

$client = socket_accept($socket);
$message = "Hello, client!";
socket_write($client, $message, strlen($message));

socket_close($client);
socket_close($socket);