[Bug]: Undefined array key "choices" in CreateStreamedResponse.php when using createStreamed()

[advanced03]

Description

When using createStreamed() in an environment using Symfony 6.4 and PHP 8.2.27, the iterator fails with:

Warning: Undefined array key "choices"
in vendor/openai-php/client/src/Responses/Chat/CreateStreamedResponse.php on line 45

This seems to happen even with valid requests, because AFAIK streamed SSE responses also include non-message events (e.g. [DONE], empty lines, or keep-alive comments) that don't contain a choices key.

CreateStreamedResponse::from() unconditionally accesses $attributes['choices'], causing a PHP warning.

Steps To Reproduce

Try to get a streamed response with createStreamed() using a locally running Ollama server with Open-AI compatible endpoints.

OpenAI PHP Client Version

v0.18.0

PHP Version

v8.2.27

Notes

No response

[iBotPeaches]

It'll be tough to track this down without the event that caused it. In the past this crash had nothing to do with missing "choices" - it was like a 200/html error page that bypassed our parsers and crashed on very first assumption in code.

[advanced03]

It'll be tough to track this down without the event that caused it. In the past this crash had nothing to do with missing "choices" - it was like a 200/html error page that bypassed our parsers and crashed on very first assumption in code.

By adding a IF statement ingetIterator() function of the class StreamResponse.php to check if the chunk contains 'choices', the problem seems to be resolved on my end.

if (!is_array($response) || !isset($response['choices'])) {
                continue;
            }

            yield $this->responseClass::from($response);

[iBotPeaches]

Could you dump out the $response var to let me see if we need to support a different type of event in the middle of your continue area?

[advanced03]

Sure:

[Symfony\Component\HttpFoundation\StreamedResponse](file:///app/vendor/symfony/http-foundation/StreamedResponse.php#L27) {#1009 
  +headers: [Symfony\Component\HttpFoundation\ResponseHeaderBag](file:///app/vendor/symfony/http-foundation/ResponseHeaderBag.php#L19) {#1017 
    #headers: array:5 [
      "cache-control" => array:1 [
        0 => "no-cache, private"
      ]
      "date" => array:1 [
        0 => "Tue, 25 Nov 2025 12:42:44 GMT"
      ]
      "content-type" => array:1 [
        0 => "text/event-stream"
      ]
      "x-accel-buffering" => array:1 [
        0 => "no"
      ]
      "transfer-encoding" => array:1 [
        0 => "chunked"
      ]
    ]
    #cacheControl: array:2 [
      "no-cache" => true
      "private" => true
    ]
    #computedCacheControl: array:2 [
      "no-cache" => true
      "private" => true
    ]
    #cookies: []
    #headerNames: array:5 [
      "cache-control" => "Cache-Control"
      "date" => "Date"
      "content-type" => "Content-Type"
      "x-accel-buffering" => "X-Accel-Buffering"
      "transfer-encoding" => "Transfer-Encoding"
    ]
  }
  #content: null
  #version: "1.0"
  #statusCode: 200
  #statusText: "OK"
  #charset: null
  -sentHeaders: ? array
  #callback: [Closure()](file:///app/src/Controller/StreamController.php#L41) {#1018 
    class: "[App\Controller\StreamController](file:///app/src/Controller/StreamController.php#L11)"
    this: App\Controller\StreamController {#845 …}
    use: {
      $stream: OpenAI\Responses\StreamResponse {#1025 …}
    }
  }
  #streamed: false
  -headersSent: false
}

[iBotPeaches]

Interesting, that looks like a 200/OK with null body?

[advanced03]

Do you mean #content? I'm not sure why it says that, I do send a prompt along with another variable.

When I call my API using a CURL request inside of a command window I can see the answer coming piece by piece.

Edit: I think something might be off about my code as I see examples online where the chunks are word by word, need to check if that's the case with me as well. 🤔