Start in shell WebSocket server:
php -q websockets.php
Start in shell WebSocket client:
php -S 0.0.0.0:8000 websockets.html please use separated tab in terminal.
Open in browser URL: http://0.0.0.0:8000/ you will see current timestamp updating
Created
May 20, 2023 13:03
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Simple PHP Websocket
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| <html> | |
| <body> | |
| <div id="root"></div> | |
| <script> | |
| var host = 'ws://0.0.0.0:12345/websockets.php'; | |
| var socket = new WebSocket(host); | |
| socket.onmessage = function (e) { | |
| document.getElementById('root').innerHTML = e.data; | |
| }; | |
| </script> | |
| </body> | |
| </html> |
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| <?php | |
| $address = '0.0.0.0'; | |
| $port = 12345; | |
| // Create WebSocket. | |
| $server = socket_create(AF_INET, SOCK_STREAM, SOL_TCP); | |
| socket_set_option($server, SOL_SOCKET, SO_REUSEADDR, 1); | |
| socket_bind($server, $address, $port); | |
| socket_listen($server); | |
| $client = socket_accept($server); | |
| // Send WebSocket handshake headers. | |
| $request = socket_read($client, 5000); | |
| preg_match('#Sec-WebSocket-Key: (.*)\r\n#', $request, $matches); | |
| $key = base64_encode(pack( | |
| 'H*', | |
| sha1($matches[1] . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11') | |
| )); | |
| $headers = "HTTP/1.1 101 Switching Protocols\r\n"; | |
| $headers .= "Upgrade: websocket\r\n"; | |
| $headers .= "Connection: Upgrade\r\n"; | |
| $headers .= "Sec-WebSocket-Version: 13\r\n"; | |
| $headers .= "Sec-WebSocket-Accept: $key\r\n\r\n"; | |
| socket_write($client, $headers, strlen($headers)); | |
| // Send messages into WebSocket in a loop. | |
| while (true) { | |
| sleep(1); | |
| $content = 'Now: ' . time(); | |
| $response = chr(129) . chr(strlen($content)) . $content; | |
| socket_write($client, $response); | |
| } |
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