<?php
use Appwrite\Client;
use Appwrite\Services\Functions;
$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
$functions = new Functions($client);
$result = $functions->createVariable(
functionId: '<FUNCTION_ID>',
variableId: '<VARIABLE_ID>',
key: '<KEY>',
value: '<VALUE>',
secret: false // optional
);```