docs: add vision example using image URL

[princeaden1]

What:

• Bug Fix
• New Feature
• Docs

Description:

This pull request adds a new usage example to the README demonstrating how to use the OpenAI to understand and describe images using GPT-4o and an accessible image URL.

Example Included

The example shows how to:

• Provide both a text prompt and an image URL
• Output GPT-4o's vision capabilities in a friendly way

Why It's Useful

• Showcases advanced GPT-4o usag
• Makes it easy for developers to test image understanding via chat
• Builds on the existing text-only examples by adding multimodal support

Related:

[iBotPeaches]

I think you misunderstood the docs a bit - since you made a new top level "Vision" that is misleading because this is just a regular ole Chat creation endpoint with image_url support. So "Vision resource" suggests there is a new top level Vision API set of endpoints which there isn't - this is just a parameter on Chat.

The amount of variables is a bit heavy for docs. Since we have to balance like 200 endpoints its all about short/sweet. Take a look at the Chat example - https://github.com/openai-php/client?tab=readme-ov-file#chat-resource and see how we have examples for function calls & tool calls - you could expand that with an image_url example.

However saying that too - why increase our documentation for Chat? Responses is the future.

[princeaden1]

Thank you for the feedback, I've force pushed a clean version of the branch based on main, with a single commit. The image input example is now added under the Chat section, following the existing structure and style. Let me know if anything else needs adjustment. Thank you.

[iBotPeaches]

thanks!