<?php
namespace app\common;

class Excel{
    public function __construct()
    {
        include_once (CMF_ROOT.'/extend/Excel/PHPExcel.php');
    }

    public function import($file = '', $cell = [], $crop = 0, $sheet = 0)
    {
        $file = iconv("utf-8", "gb2312", $file);   //转码
        if (empty($file) OR !file_exists($file)) {
            die('file not exists!');
        }

        $objRead = new \PHPExcel_Reader_Excel2007();   //建立reader对象
        if (!$objRead->canRead($file)) {
            $objRead = new \PHPExcel_Reader_Excel5();
            if (!$objRead->canRead($file)) {
                die('No Excel!');
            }
        }

        $cellName  = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'AA', 'AB', 'AC', 'AD', 'AE', 'AF', 'AG', 'AH', 'AI', 'AJ', 'AK', 'AL', 'AM', 'AN', 'AO', 'AP', 'AQ', 'AR', 'AS', 'AT', 'AU', 'AV', 'AW', 'AX', 'AY', 'AZ'];
        $obj       = $objRead->load($file);  //建立excel对象
        $currSheet = $obj->getSheet($sheet);   //获取指定的sheet表
        $columnH   = $currSheet->getHighestColumn();   //取得最大的列号
        $columnCnt = array_search($columnH, $cellName);
        $rowCnt    = $currSheet->getHighestRow();   //获取总行数

        $data = [];
        for ($_row = 1; $_row <= $rowCnt; $_row++) {  //读取内容
            if ($_row > $crop) {
                for ($_column = 0; $_column <= $columnCnt; $_column++) {
                    $cellId    = $cellName[$_column] . $_row;
                    $cellValue = $currSheet->getCell($cellId)->getValue();
                    //$cellValue = $currSheet->getCell($cellId)->getCalculatedValue();  #获取公式计算的值
                    if ($cellValue instanceof \PHPExcel_RichText) {   //富文本转换字符串
                        $cellValue = $cellValue->__toString();
                    } else {
                        $cellValue = (string)$cellValue;
                    }
                    if (!empty($cell[$_column])) {
                        $data[$_row][$cell[$_column]] = $cellValue;
                    } else {
                        $data[$_row][] = $cellValue;
                    }
                }
            }
        }

        return array_values($data);
    }
}