Code sample on using custom function in the OpenAI PHP Laravel package.

CustomFunctionExample.php

<?php

$city_fact_result = OpenAI::chat()->create([
    'model' => 'gpt-3.5-turbo',
    'messages' => [
        [
            'role' => 'user',
            'content' => "I'm in {$location}?",
        ],[
            'role' => 'assistant',
            'content' => null,
            'function_call' => [
                'name' => 'get_interesting_location_fact',
                'arguments' => "{'location': '{$location}'}"
            ],
        ]
    ],
    'functions' => [
        [
            'name' => 'get_interesting_laravel_fact',
            'description' => 'Find something interesting about a location.',
            'parameters' => [
                'type' => 'object',
                'properties' => [
                    'location' => [
                        'type' => 'string',
                        'description' => "The city and state, e.g. San Francisco, CA"
                    ]
                ],
                'required' => ['location']
            ]
        ]
    ],
    'max_tokens' => 250
]);