I am using Postman to send and receive API requests from OpenAI’s ChatGPT API. I’m having an issue with formatting the prompt I want to use.

I’ve been able to get the API working on Postman, but I’m having trouble sending arrays. This is the format of the body for the API request:

{
    "model": "gpt-3.5-turbo",
    "messages": [
      {
        "role": "user",
        "content": "Whatever question I want to ask ChatGPT"
      }
    ]
  }

Sending a request like this works fine. However, I want to put an associative array in the “content” key.

Here is an example of an array I want to send:

$array = [
        'songName' => "RandomSong",
        'lyrics' => "lyrics line one / lyrics line two"
    ];

When I echo this code in PHP with echo json_encode($array) and copy/paste that result into Postman, I get this:

{
    "model": "gpt-3.5-turbo",
    "messages": [
      {
        "role": "user",
        "content": "{"songName":"RandomSong","lyrics":"lyrics line one / lyrics line two"}"
      }
    ]
  }

When I make this API request, I get an error message:

{
    "error": {
        "message": "We could not parse the JSON body of your request. (HINT: This likely means you aren't using your HTTP library correctly. The OpenAI API expects a JSON payload, but what was sent was not valid JSON. If you have trouble figuring out how to fix this, please contact us through our help center at help.openai.com.)",
        "type": "invalid_request_error",
        "param": null,
        "code": null
    }
}

It seems that the double quotation might be causing an issue here. Any ideas on how I can potentially fix this issue?

Notes

• I have also tried wrapping the key and value pairs with json_encode to no avail.