当前路径：Classes/PHPExcel/Reader/CSV.php
<?php

/** PHPExcel root directory */
if (!defined('PHPEXCEL_ROOT')) {
    /**
     * @ignore
     */
    define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');
    require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');
}

/**
 * PHPExcel_Reader_CSV
 *
 * Copyright (c) 2006 - 2015 PHPExcel
 *
 * 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   PHPExcel
 * @package    PHPExcel_Reader
 * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
 * @version    ##VERSION##, ##DATE##
 */
class PHPExcel_Reader_CSV extends PHPExcel_Reader_Abstract implements PHPExcel_Reader_IReader
{
    /**
     * Input encoding
     *
     * @access    private
     * @var    string
     */
    private $inputEncoding = 'UTF-8';

    /**
     * Delimiter
     *
     * @access    private
     * @var string
     */
    private $delimiter = ',';

    /**
     * Enclosure
     *
     * @access    private
     * @var    string
     */
    private $enclosure = '"';

    /**
     * Sheet index to read
     *
     * @access    private
     * @var    int
     */
    private $sheetIndex = 0;

    /**
     * Load rows contiguously
     *
     * @access    private
     * @var    int
     */
    private $contiguous = false;

    /**
     * Row counter for loading rows contiguously
     *
     * @var    int
     */
    private $contiguousRow = -1;


    /**
     * Create a new PHPExcel_Reader_CSV
     */
...