<?php
require_once('vendor\autoload.php');
use \Aspose\Cells\Cloud\Api\CellsApi;
use \Aspose\Cells\Cloud\Request\PutConvertWorkbookRequest;

$CellsCloudClientId = "...." ; # get from https://dashboard.aspose.cloud/#/applications
$CellsCloudClientSecret = "....";  # get from https://dashboard.aspose.cloud/#/applications
$cellsApi = new CellsApi($CellsCloudClientId , $CellsCloudClientSecret ); 
$request = new PutConvertWorkbookRequest();
$request->setFile(  'TestData/Book1.xlsx');
$request->setFormat("tiff");
$response = $cellsApi->putConvertWorkbook($request);
copy($response->getPathname(),"Book1.tiff");