Here I share the PHP version of @aconital:

function encodeImage($imagePath): string {
    $imageContent = file_get_contents($imagePath);
    return base64_encode($imageContent);
}

$imagePath = '/path/to/image.jpg';
$base64Image = encodeImage($imagePath);

$payload = [
    'model'      => 'gpt-4-vision-preview',
    'messages'   => [
        [
            'role'    => 'user',
            'content' => [
                [
                    'type' => 'text',
                    'text' => "What’s in this image?"
                ],
                [
                    'type' => 'image_url',
                    'image_url' => "data:image/jpeg;base64,$base64Image"
                ],
            ],
        ]
    ],
    'max_tokens' => 200,
];

$result  = OpenAI::chat()->create($payload);

echo "<figure style='font-family:sans-serif;width: 500px'>
         <img style='width: 100%' src='$imagePath' alt=''>
         <figcaption>{$result->choices[0]->message->content}</figcaption>
      </figure>";

Result:

Uh oh!

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