如何使用伺服器傳送事件 (SSE) 將資料從上述 API 串流傳輸?shù)绞褂?JavaScript 和 PHP 的瀏覽器用戶端？我已經(jīng)研究這個問題好幾個小時了，但我似乎無法弄清楚出了什麼問題。作為參考，我嘗試在這裡調(diào)整解決方案：Stream DATA From openai GPT-3 API using PHP
##我的程式碼的其餘部分或多或少與上面問題中的程式碼相同。我修改的唯一不起作用的部分是：
curl_setopt($ch, CURLOPT_WRITEFUNCTION, function ($curl, $data) {
# str_repeat(' ',1024*8) is needed to fill the buffer and will make streaming the data possible
$data = json_decode($data, true);
$text = $data['choices'][0]['text'];
echo $text . str_repeat(' ', 1024 * 8);
return strlen($data);
});
首先，我嘗試僅傳回「choices」數(shù)組中的「text」屬性（請參閱下面的範(fàn)例 API 回應(yīng)）。
這是我收到的回覆：
注意：嘗試存取 C:FILE_PATHsse.php 中 null 類型值的陣列偏移量。
其次，如何將「文字」即時傳輸?shù)娇蛻舳松系脑兀窟@是我到目前為止的實作。
JavaScript
$.ajax({
type: "POST",
url: "sse.php",
data: JSON.stringify({
prompt: "What is the best way to",
num_completions: 1,
temperature: 0.5,
}),
contentType: "application/json",
success: function (response) {
const source = new EventSource("sse.php");
source.onmessage = function (event) {
const div = document.getElementById("response");
div.innerHTML += event.data + "<br>";
console.log(event);
};
},
});
API 串流傳輸?shù)馁Y料樣本區(qū)塊如下所示。我試圖僅將“文字”部分流回瀏覽器。
data: {"id": "cmpl-XXXXXXXXXXXXXXXXXXXXXXX", "object": "text_completion", "created": 1671700494, "choices": [{"text": " Best", "index": 0, "logprobs": null, "finish_reason": null}], "model": "text-davinci-003"}
data: {"id": "cmpl-XXXXXXXXXXXXXXXXXXXXXXX", "object": "text_completion", "created": 1671700494, "choices": [{"text": " way", "index": 0, "logprobs": null, "finish_reason": null}], "model": "text-davinci-003"}
data: {"id": "cmpl-XXXXXXXXXXXXXXXXXXXXXXX", "object": "text_completion", "created": 1671700494, "choices": [{"text": " to", "index": 0, "logprobs": null, "finish_reason": null}], "model": "text-davinci-003"}
data: [DONE]
我應(yīng)該如何實現(xiàn)這個？我已經(jīng)無計可施了。提前致謝。
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我使用以下程式碼找到了解決方法：
//Placed at the beginning of the script
@ini_set('zlib.output_compression', 0);
ob_implicit_flush(true);
ob_end_flush();
header("Content-Type: text/event-stream");
header("Cache-Control: no-cache");
//Initialize cURL and set the necessary headers and request parameters
...
...
curl_setopt($curl, CURLOPT_WRITEFUNCTION, function ($curl, $data) {
echo $data;
return strlen($data);
});
$curl_response = curl_exec($curl);
echo $curl_response;
然後我使用 JavaScript 來提取文本，如下所示：
source.onmessage = function (event) {
const div = document.getElementById("response");
text = JSON.parse(event.data).choices[0].text;
div.innerHTML += text;
};
