PhpSpreadsheet/src/Bootstrap.php

<?php

/**
 * Bootstrap for PhpSpreadsheet classes.
 *
 * Copyright (c) 2006 - 2016 PhpSpreadsheet
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * @category   PhpSpreadsheet
 *
 * @copyright  Copyright (c) 2006 - 2016 PhpSpreadsheet (https://github.com/PHPOffice/PhpSpreadsheet)
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
 */

// This sucks, but we have to try to find the composer autoloader
$paths = [
    __DIR__ . '/../vendor/autoload.php', // In case PhpSpreadsheet is cloned directly
    __DIR__ . '/../../../autoload.php', // In case PhpSpreadsheet is a composer dependency.
];

foreach ($paths as $path) {
    if (file_exists($path)) {
        require_once $path;

        return;
    }
}

throw new \Exception('Composer autoloader could not be found. Install dependencies with `composer install` and try again.');