How I can install the PHPExcel library in laravel?

There's actually a neat new PHPExcel library specifically made for Laravel. Easy installation and it looks easy to use (I'm unaffiliated). https://laravel-excel.com/

You should use composer: Add "phpexcel/phpexcel": "dev-master" to your composer.json

"require": {
    "phpexcel/phpexcel": "dev-master"
}

Then execute composer update. So you can use it as normal:

public function import($path){

    $objPHPExcel = PHPExcel_IOFactory::load($path);
    $objWorksheet = $objPHPExcel->getActiveSheet();
    $highestRow = $objWorksheet->getHighestRow();
    for ($row = 1; $row <= $highestRow; ++$row) {
         var_dump($objWorksheet->getCellByColumnAndRow(1, $row));
    }

}

For install PhpExcel in laravel 5.

Please visit this link for pakage -https://packagist.org/packages/phpoffice/phpexcel.

Please follow the instruction --

1:- Add "phpoffice/phpexcel": "dev-master" to your composer.json.

2:- execute "composer update" on terminal.

3:- Open the file "/vendor/composer/autoload_namespaces.php". Paste the below line in the file.

'PHPExcel' => array($vendorDir . '/phpoffice/phpexcel/Classes'),

4:- Now you can use PHPEXCEL library in your controllers or middleware or library.

use PHPExcel; 
use PHPExcel_IOFactory;