PHPExcel usage

gistfile1.php

<?php
$packages = array();
$contents = file_get_contents('package.txt');
$packages = explode('|', $contents);
foreach ($packages as $key=>$package) {
    if (empty($package)) continue;
    $packages[$key] = trim($package);
}


require_once 'PHPExcel/PHPExcel/IOFactory.php';
require_once 'PHPExcel/PHPExcel.php';


$objPHPExcel = PHPExcel_IOFactory::createReader('Excel2007');
$objPHPExcel = $objPHPExcel->load('GAME.xlsx');

$sheet_count = $objPHPExcel->getSheetCount(); 
$excel_data = array();
for ($s = 0; $s < $sheet_count; $s++) { 
    $objPHPExcel->setActiveSheetIndex($s);
    $currentSheet = $objPHPExcel->getSheet($s); 
    $row_num = $currentSheet->getHighestRow();
    $col_max = $currentSheet->getHighestColumn();
    for($i = 2; $i <= $row_num; $i++) { 
        $packageId = trim($currentSheet->getCell('A'.$i)->getFormattedValue()); 
        echo $packageId;
        if (in_array($packageId, $packages)) {
            echo 'row:',$s,'|',$i;
            $objPHPExcel->getActiveSheet()->setCellValue('F'.$i, '1');
        }
    }
}

$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
$objWriter->save('GAME_UPDATE.xlsx');