PHP Requires Chilkat v11.4.0+

Referencing a Pre-Uploaded Image File by file_id in an AI Request

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Currently, OpenAI is the only AI provider that supports referencing a pre-uploaded image in a request for text generation. Chilkat2 PHP

<?php

use Chilkat2\Ai;
use Chilkat2\StringBuilder;

$success = false;

$success = false;

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

$ai = new Ai();

// OpenAI is currently the only AI provider that supports referencing a pre-uploaded image by file_id
// in a request for text generation.
$ai->Provider = 'openai';

// Use your provider's API key.
$ai->ApiKey = 'MY_API_KEY';

// Choose a model.
$ai->Model = 'gpt-5.6-luna';

// See the following example showing how to upload a file
// Upload an Image File to an AI Provider

// Use the file_id of the pre-uploaded file.
$file_id = 'file-5CnBeuFasqNcAfti3cx4Fe';
$ai->InputAddImageFileId($file_id, 'application/json');

$ai->InputAddText('What is in this image?');

// Ask the AI for text output.
try {
    $ai->Ask('text');
} catch (\Chilkat2\Exception $e) {
    echo $e->getMessage(), "\n";
    exit;
}

// Get the text response.
$sbResponse = new StringBuilder();
$ai->GetOutputTextSb($sbResponse);
echo $sbResponse->GetAsString(), "\n";