如何使用服務(wù)器發(fā)送事件 (SSE) 將數(shù)據(jù)從上述 API 流式傳輸?shù)绞褂?JavaScript 和 PHP 的瀏覽器客戶端？我已經(jīng)研究這個(gè)問題好幾個(gè)小時(shí)了，但我似乎無法弄清楚出了什么問題。作為參考，我嘗試在這里調(diào)整解決方案：Stream DATA From openai GPT-3 API using PHP
我的代碼的其余部分或多或少與上面問題中的代碼相同。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，我嘗試僅返回“choices”數(shù)組中的“text”屬性（請(qǐng)參閱下面的示例 API 響應(yīng)）。
這是我收到的回復(fù)：
注意：嘗試訪問 C:FILE_PATHsse.php 中 null 類型值的數(shù)組偏移量。
其次，如何將“文本”實(shí)時(shí)傳輸?shù)娇蛻舳松系脑?？這是我到目前為止的實(shí)現(xiàn)。
JavaScript
$.ajax({
type: "POST",
url: "sse.php",
data: JSON.stringify({
prompt: "What is the best way to",
num_completions: 1,
temperature: 0.5,
}),
contentType: "application/json",
success: function (response) {
const source = new EventSource("sse.php");
source.onmessage = function (event) {
const div = document.getElementById("response");
div.innerHTML += event.data + "<br>";
console.log(event);
};
},
});
API 流式傳輸?shù)臄?shù)據(jù)樣本塊如下所示。我試圖僅將“文本”部分流回瀏覽器。
data: {"id": "cmpl-XXXXXXXXXXXXXXXXXXXXXXX", "object": "text_completion", "created": 1671700494, "choices": [{"text": " Best", "index": 0, "logprobs": null, "finish_reason": null}], "model": "text-davinci-003"}
data: {"id": "cmpl-XXXXXXXXXXXXXXXXXXXXXXX", "object": "text_completion", "created": 1671700494, "choices": [{"text": " way", "index": 0, "logprobs": null, "finish_reason": null}], "model": "text-davinci-003"}
data: {"id": "cmpl-XXXXXXXXXXXXXXXXXXXXXXX", "object": "text_completion", "created": 1671700494, "choices": [{"text": " to", "index": 0, "logprobs": null, "finish_reason": null}], "model": "text-davinci-003"}
data: [DONE]
我應(yīng)該如何實(shí)現(xiàn)這個(gè)？我已經(jīng)無計(jì)可施了。提前致謝。
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我使用以下代碼找到了解決方法：
//Placed at the beginning of the script
@ini_set('zlib.output_compression', 0);
ob_implicit_flush(true);
ob_end_flush();
header("Content-Type: text/event-stream");
header("Cache-Control: no-cache");
//Initialize cURL and set the necessary headers and request parameters
...
...
curl_setopt($curl, CURLOPT_WRITEFUNCTION, function ($curl, $data) {
echo $data;
return strlen($data);
});
$curl_response = curl_exec($curl);
echo $curl_response;
然后我使用 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;
};
