inc_excel.php

<?php
//ganti dimana posisi phpExcel.php berada
require_once dirname(__FILE__) . '/phpexcel/Classes/PHPExcel.php';
$objPHPExcel = new PHPExcel();
define('EOL','<br/>');

function save_chart($obj, $name){
    $objWriter = PHPExcel_IOFactory::createWriter($obj, 'Excel2007');
    $objWriter->setIncludeCharts(TRUE); //wajib ada
    $objWriter->save($name);

}