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(PHP Extension) WebSocket Binance Trade Stream (subscribe and receive updates)Subscribe to a binance trade stream and receive updates. For more information, see https://binance-docs.github.io/apidocs/spot/en/#live-subscribing-unsubscribing-to-streams
<?php // The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number. // For example, if using Chilkat v9.5.0.48, then include as shown here: include("chilkat_9_5_0.php"); // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. $ws = new CkWebSocket(); // For brevity, this example does not check for errors when etablishing the WebSocket connection. // See Establish WebSocket Connection for more complete sample code for making the connection. $rest = new CkRest(); // Connect to wss://stream.binance.com:9443 $success = $rest->Connect('stream.binance.com',9443,true,false); if ($success == false) { print $rest->lastErrorText() . "\n"; exit; } $success = $ws->UseConnection($rest); if ($success == false) { print $ws->lastErrorText() . "\n"; exit; } $ws->AddClientHeaders(); // Raw streams are accessed at /ws/<streamName> $responseBody = $rest->fullRequestNoBody('GET','/ws/btcusdt'); if ($rest->get_LastMethodSuccess() == false) { print $rest->lastErrorText() . "\n"; exit; } $success = $ws->ValidateServerHandshake(); if ($success != true) { print $ws->lastErrorText() . "\n"; print $responseBody . "\n"; print $rest->responseHeader() . "\n"; exit; } print $responseBody . "\n"; print $rest->responseHeader() . "\n"; // POST JSON to subscribe to a stream // { // "method": "SUBSCRIBE", // "params": // [ // "btcusdt@aggTrade", // "btcusdt@depth" // ], // "id": 1 // } $json = new CkJsonObject(); $json->UpdateString('method','SUBSCRIBE'); $json->UpdateString('params[0]','btcusdt@aggTrade'); $json->UpdateString('params[1]','btcusdt@depth'); $json->UpdateInt('id',1); // Send a full message in a single frame $finalFrame = true; $success = $ws->SendFrame($json->emit(),$finalFrame); if ($success != true) { print $ws->lastErrorText() . "\n"; exit; } $jsonTradeData = new CkJsonObject(); $jsonTradeData->put_EmitCompact(false); // Begin reading the trade stream response. // We'll just read the 1st 10 updates and then exit.. $receivedFinalFrame = false; $numTradesReceived = 0; while ($numTradesReceived < 5) { $success = $ws->ReadFrame(); if ($success != true) { print 'Failed to receive a frame' . "\n"; print 'ReadFrame fail reason = ' . $ws->get_ReadFrameFailReason() . "\n"; print $ws->lastErrorText() . "\n"; exit; } // The responses we desire are in Text frames, where the opcode = 1. if ($ws->get_FrameOpcodeInt() == 1) { $receivedJson = $ws->getFrameData(); $jsonTradeData->Load($receivedJson); print $jsonTradeData->emit() . "\n"; $numTradesReceived = $numTradesReceived + 1; } } // Close the websocket connection. $success = $ws->SendClose(true,1000,'Closing this websocket.'); if ($success != true) { print $ws->lastErrorText() . "\n"; exit; } // Read the Close response. $success = $ws->ReadFrame(); if ($success != true) { print 'ReadFrame fail reason = ' . $ws->get_ReadFrameFailReason() . "\n"; print $ws->lastErrorText() . "\n"; exit; } print 'Success.' . "\n"; // The output of the above code is shown here: ?> |
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