ArkiwiAPI/arav_up_api/requests/requestGetCreate.php

<?php
require_once('request.php');

class arkiwiRequestGetCreate extends arkiwiRequest {
public function run() {
        if($this->request['method'] != 'GET') {
            $this->setBodyError(500, "arkiwiRequestGetCreate: GET method required.");
            return;
        }

        $this->setCode(200);
        $this->setBodyJSON(Array('id' => $this->createSession()));
    }
}