OpenAI API null response [duplicate] - wordpress

Question

I am getting an error for the following PHP code:
$curl = curl_init("https://api.openai.com/v1/engines/davinci/completions");
$data = array(
'prompt' => 'how many sundays in 2023',
'max_tokens' => 256,
'temperature' => 0.7,
'model' => 'text-davinci-003'
);
curl_setopt($curl, CURLOPT_POST, 1);
curl_setopt($curl, CURLOPT_POSTFIELDS, http_build_query($data));
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_HTTPHEADER, ['Authorization: Bearer sk-MY-API-KEY']);
curl_setopt($curl, CURLOPT_HTTPHEADER, ['Content-Type: application/json']);
$result = curl_exec($curl);
curl_close($curl);
$result = json_decode($result);
print $result->choices[0]->text;
I correctly provided the API Key, but getting this error:
Error message: You didn't provide an API key. You need to provide your API key in an Authorization header using Bearer auth (i.e. Authorization: Bearer YOUR_KEY)

Answer 1

All Engines endpoints are deprecated.
This is the correct Completions endpoint:
https://api.openai.com/v1/completions
Working example
If you run php test.php in CMD, the OpenAI API will return the following completion:
string(23) "
This is indeed a test"
test.php
<?php
$ch = curl_init();
$url = 'https://api.openai.com/v1/completions';
$api_key = 'sk-xxxxxxxxxxxxxxxxxxxx';
$post_fields = '{
"model": "text-davinci-003",
"prompt": "Say this is a test",
"max_tokens": 7,
"temperature": 0
}';
$header = [
'Content-Type: application/json',
'Authorization: Bearer ' . $api_key
];
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_fields);
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
$result = curl_exec($ch);
if (curl_errno($ch)) {
echo 'Error: ' . curl_error($ch);
}
curl_close($ch);
$response = json_decode($result);
var_dump($response->choices[0]->text);
?>