PHP 导入execl的工具类方法

Posted 2021-01-27 yangcoder

最近在做一个项目，有大量的execl表单导入导出，模板格式也比较简单，都是一维格式。但是抵不住量多，每次写导入导出的时候都要单独写。就想着怎么偷个懒。所以就写了一下几个工具方法。

字母对应的数字(顺序A对应1)

 1 /**
 2      * 字母对应的数字(顺序A对应1)
 3      * @param $char
 4      * @return int
 5      */
 6     function charToNum($char)
 7     {
 8         $char = strtolower($char);
 9         $array = array(‘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‘);
10         $len = strlen($char);
11         $sum = 0;
12         for ($i = 0; $i < $len; $i++) {
13             $index = array_search($char[$i], $array);
14             $sum += ($index + 1) * pow(26, $len - $i - 1);
15         }
16         return $sum;
17     }

数字转字母Excel列标

/**
     * 数字转字母Excel列标
     * @param $index
     * @param int $start 是否小写
     * @return int
     */
    function numToChar($index, $start = 64)
    {
        !$start && $start = 64;
        $str = ‘‘;
        $num = floor($index / 26);
        $mod = $index % 26;
        if (($mod > 0 && $num > 0) || $num > 1) {
            //$str = chr(($mod == 0 ? $num - 1 : $num) + $start);
            $str = numToChar(($mod == 0 ? $num - 1 : $num), $start);
            $index = $index - (26 * $num);
            $index || $index = 26;
            return $str . numToChar($index, $start);
        } else {
            return $str . chr($index % 27 + $start);
        }
    }

测试方法：

echo charToNum("A") . "   " . numToChar(charToNum("A"));
        echo "<br/>";
        echo charToNum("Z"). "&nbsp;&nbsp;&nbsp;" . numToChar(charToNum("Z"));;
        echo "<br/>";
        echo charToNum("BA"). "&nbsp;&nbsp;&nbsp;" . numToChar(charToNum("BA"));;
        echo "<br/>";
        echo charToNum("BZ"). "&nbsp;&nbsp;&nbsp;" . numToChar(charToNum("BZ"));;
        echo "<br/>";
        echo charToNum("ZA"). "&nbsp;&nbsp;&nbsp;" . numToChar(charToNum("ZA"));;
        echo "<br/>";
        echo charToNum("ZZ"). "&nbsp;&nbsp;&nbsp;" . numToChar(charToNum("ZZ"));;
        echo "<br/>";
        echo charToNum("AAA"). "&nbsp;&nbsp;&nbsp;" . numToChar(charToNum("AAA"));;
        echo "<br/>";
        echo charToNum("AAZ"). "&nbsp;&nbsp;&nbsp;" . numToChar(charToNum("AAZ"));;
        echo "<br/>";
        echo charToNum("ZZA"). "&nbsp;&nbsp;&nbsp;" . numToChar(charToNum("ZZA"));;
        echo "<br/>";
        echo charToNum("ZZZ"). "&nbsp;&nbsp;&nbsp;" . numToChar(charToNum("ZZZ"));;

结果：

1   A
26   Z
53   BA
78   BZ
677   ZA
702   ZZ
703   AAA
728   AAZ
18253   ZZA
18278   ZZZ

针对上面的两个方法，如果有更好的方法，欢迎提供意见。

将表转换成数组，其中map是表头字段和要转换成的数组key的映射关系。比如：

$map = [
   "字段1"=>"key1",
   "字段2"=>"key2",
];

字段1和字段2是execl表头名称

/**
     * 表数据转化为数组 excel 低版本excel，不包括excel2007
     * @param $file
     * @param array $map 字段映射关系
     * @return array
     */
    function excelToArray($file, $map = [])
    {
        /*创建对象,针对Excel2003*/
        $objReader = phpExcel_IOFactory::createReader(‘Excel2007‘);
        /*此属性不明，貌似设置为flase也可以*/
        $objReader->setReadDataOnly(true);
        /*加载对象路径*/
        $objPHPExcel = $objReader->load($file);
        /*获取工作表*/
        $objWorksheet = $objPHPExcel->getActiveSheet();
        //获得当前活动的工作表，即打开默认显示的那张表
        //$objWorksheet=$objPHPExcel->getSheet(0);
        //也可以这样获取，读取第一个表,参数0
        /*得到总行数*/
        $highestRow = $objWorksheet->getHighestRow();
        /*得到总列数*/
        $highestColumn = $objWorksheet->getHighestColumn();
        $highestColumnIndex = PHPExcel_Cell::columnIndexFromString($highestColumn);
        /*取单元数据进数组*/

        $keys = [];
        for ($col = 0; $col < $highestColumnIndex; ++$col) {
            $keys[] = $objWorksheet->getCellByColumnAndRow($col, 1)->getValue();
        }
        for ($row = 2; $row <= $highestRow; ++$row) {
            for ($col = 0; $col < $highestColumnIndex; ++$col) {
                $key = $keys[$col];
                if ($map && isset($map[$key])) {
                    $key_map = $key = $map[$key];
                } else {
                    $key_map = $key;
                }
                while (isset($excelData[$row][$key])) {
                    $count = intval(str_replace("{$key_map}_", "", $key)) + 1;
                    $key = "{$key_map}_{$count}";
                }
                $value = $objWorksheet->getCellByColumnAndRow($col, $row)->getValue();
                $excelData[$row][$key] = $value ? "{$value}" : $value;
            }
        }
        return $excelData;
    }

导出execl，其中map是数组key和表头字段的映射关系，比如：

$map = [
   "key1"=>"字段1",
   "key2"=>"字段2",
];

key1和key2 必须在$rows参数中存在

    /**
     * 导出Execl
     * @param $title
     * @param $rows
     * @param $map
     * @return PHPExcel
     */
    function exportExcel($title, $rows, $map)
    {
        $objPHPExcel = new PHPExcel(); //实例化phpExcel类
        $objPHPExcel->setActiveSheetIndex(0);//设置第一个工作表为活动工作表
        $objActSheet = $objPHPExcel->getActiveSheet();//获取活动工作表对象

        //设置属性 - 标题
        $objPHPExcel->getProperties()->setTitle($title);

        /**
         * 设置每个列的值一列为A  一行为1 则 第一行第一列为A1
         * 以此类推,如果列不固定就用内置函数把数字转换成字母; $col是列 $row是行 $value是值.
         */
        // 表头
        $header = false;
        $row_index = 2;
        foreach ($rows as $row) {
            $col_index = 1;
            foreach ($row as $key => $value) {
                if (key_exists($key, $map)) {
                    $col_letter = $this->getLetter($col_index);
                    if (!$header || !$objActSheet->getCell("{$col_letter}1")->getValue()) {
                        $objActSheet->setCellValue("{$col_letter}1", $map[$key]);
                    }
                    $objActSheet->setCellValue("{$col_letter}{$row_index}", $value === null ? "" : $value);
                    $col_index++;
                }
            }
            $row_index++;
            $header = true;
        }
        $objPHPExcel->getActiveSheet()->getPageSetup()->setHorizontalCentered(true);
        $objPHPExcel->getActiveSheet()->getPageSetup()->setVerticalCentered(false);

        ob_end_clean();
        ob_start();
        header(‘Pragma:public‘);
        header(‘Expires:0‘);
        header(‘Cache-Control:must-revalidate,post-check=0,pre-check=0‘);
        header(‘Content-Type:application/force-download‘);
        header(‘Content-Type:application/vnd.ms-excel‘);
        header(‘Content-Type:application/octet-stream‘);
        header(‘Content-Type:application/download‘);
        header(‘Content-Transfer-Encoding:binary‘);
        $date = date("YmdHis");
        header("Content-Disposition:attachment;filename="{$title}-{$date}.xls"");
        $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, ‘Excel5‘);
        $objWriter->save(‘php://output‘);

        ob_end_flush();
    }