<?php
use Appwrite\Client;
use Appwrite\Services\Databases;
$client = (new Client())
->setEndpoint('https://<REGION>.cloud.appwrite.io/v1') // Your API Endpoint
->setProject('<YOUR_PROJECT_ID>') // Your project ID
->setKey('<YOUR_API_KEY>'); // Your secret API key
$databases = new Databases($client);
$result = $databases->createBigIntAttribute(
databaseId: '<DATABASE_ID>',
collectionId: '<COLLECTION_ID>',
key: '',
required: false,
min: null, // optional
max: null, // optional
default: null, // optional
array: false // optional
);```