php处理Excel步骤介绍

php处理Excel步骤介绍php

遇到问题数据库

平时在工做中,时常会出现将数据库表导出为Excel或者将Excel导入数据库表的需求。这一需求早早就已经实现过了,为了方便导入导出,兄弟连www.lampbrother.net将其分装成了两个方法做为记录。数组

 

代码实现app

phpexcel类库的引用composer

phpexcel拥有强大的Excel处理能力,在packagist上已经拥有数百万次的下载量,不过实话实说,excel的处理速度仍然是很是慢,数据量较大时慎重使用。在packagist上下载或者直接用composer require phpoffice/phpexcel以后,即可以使用phpexcel了。ide

 

导出成为Excelui

在绝大多数状况下,导出excel其实就是将二位数组转化为表格。spa

 

    use namespace PHPExcel;.net

    /**excel

     * @param $name string 要保存的Excel的名字

     * @param $ret_data 转换为表格的二维数组

     * @throws PHPExcel_Exception

     * @throws PHPExcel_Reader_Exception

     */

    function exportExcel($name, $ret_data){

        $objPHPExcel = new PHPExcel();

        //设置表格

        $objPHPExcel->getProperties()->setCreator($name)

                ->setLastModifiedBy($name)

                ->setTitle("Office 2007 XLSX Test Document")

                ->setSubject("Office 2007 XLSX Test Document")

                ->setDescription("Test document for Office 2007 XLSX, generated using PHP classes.")

                ->setKeywords("office 2007 openxml php")

                ->setCategory("Test result file");

        //填充数据

        foreach ($ret_data as $key => $row) {

            $num = $key + 1;

            //$row = array_values($row);

            $i=0;

            foreach ($row as $key2 => $value2) {

                $objPHPExcel->setActiveSheetIndex(0)->setCellValue( Cell::stringFromColumnIndex($i). ($num), $value2);

                $i++;

            }

        }

        //设置表格并输出

        $objPHPExcel->getActiveSheet()->setTitle($name);

        header('Content-Type: application/vnd.ms-excel');

        header("Content-Disposition: attachment;filename={$name}.xls");

        header('Cache-Control: max-age=0');

        header('Cache-Control: max-age=1');

        header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');

        header('Cache-Control: cache, must-revalidate');

        header('Pragma: public'); // HTTP/1.0

        $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel5');

        $objWriter->save('php://output');

        exit;

    }

导入Excel

 

同理,导入Excel其实就是将Excel的数据转化成为二维数组,这就要求Excel必须符合格式。

 function getRows($inputFileName)

    {

        if (!file_exists($inputFileName)) {

            throw new Exception("File not existed");

        }

        $inputFileType = PHPExcel_IOFactory::identify($inputFileName);

        $objReader = PHPExcel_IOFactory::createReader($inputFileType);

        $objPHPExcel = $objReader->load($inputFileName);

        $objWorksheet = $objPHPExcel->getActiveSheet();

        $highestRow = $objWorksheet->getHighestRow();

        $highestColumn = $objWorksheet->getHighestColumn();

        $highestColumnIndex = PHPExcel_Cell::columnIndexFromString($highestColumn);//总列数

        $row = 1;

        $curr = array();

        while ($row <= $highestRow) {

            for ($col = 0; $col < $highestColumnIndex; $col++) {

                $value = str_replace(array("\n", "\n\r", "\r"), "", $objWorksheet->getCellByColumnAndRow($col, $row)->getValue());

                $curr[$row][] = $value;

            }

            $row++;

        }

        array_shift($curr);//第一行通常是字段名(Excel中列的标题),导入时要移除

        return $curr;

}

 

其余

导出时保存的格式是xlsx,想要改为其余格式须要传入不一样的参数。

导入时若是有多个sheet时须要在上次打开时在要导入的sheet页(以保证当前sheet为activeSheet)关闭,或者根据sheet名在程序中选择sheet。

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