使用PHPExcel导出数据

• 最近要求做增加客流数据等导出为Excel的功能，phpExcel包功能强大，根据实际需求，我只学习了简单的功能。

安装PHPExcel

在composer.json中添加：
"require": {
"phpoffice/phpexcel": "1.8.1"
},

安装完毕，在vendor中出现一个phpoffice包。

使用

        $objPHPExcel = new PHPExcel();
        $objPHPExcel->setActiveSheetIndex(0);
        $objPHPExcel->getActiveSheet()
            ->setCellValue("A1", '门店名称')
            ->setCellValue("B1", '店长')
            ->setCellValue("A2", '我的门店')
            ->setCellValue("B2", 'www');

        header('Content-Type: application/vnd.ms-excel');
        header('Content-Disposition: attachment;filename="store.xls"');
        $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
        $objWriter->save('php://output');
        $objPHPExcel->disconnectWorksheets();

• 增加header头，则会直接下载一个Excel表格到本地，exce列为大写的A,B...,行为数字1,2,3...，不断地拓展。

如果觉得一个个的麻烦可以使用一个php数组导入：

        $objPHPExcel = new PHPExcel();
        $objPHPExcel->setActiveSheetIndex(0);

        $dataArray = array(
            array('111' => "2016", '222' => "1000", '33aa' => "1000", 200),
            array("2010", "Q2", "www", 100),
            array("2010", "Q2", "www", 100),
            array("2010", "Q2", "www", 100),
            array("2010", "Q2", "www", 100),
        );
//        或者hash也是可以的，只是插入的Excel的时候，过滤掉key
//        $dataArray = array(
//            '11'=> array('111' => "2116", '222' => "1000", '33aa' => "1000", 200),
//            '22'=> array("2010", "Q2", "www", 100),
//            array("2010", "Q2", "www", 100),
//            array("2010", "Q2", "www", 100),
//            array("2010", "Q2", "www", 100),
//        );
        $objPHPExcel->getActiveSheet()->fromArray($dataArray, null, 'A1');
        $objPHPExcel->getActiveSheet()
            ->setCellValue("E2", '=SUM(A1:C1）/3');

• 可以将数组导入，关联数组也可以，只是将值导入，同时可以计算结果导入对应的表格。

• 单元格计算，例如：setCellValue("E2", '=SUM(A1:C1）/3')，试讲A1,B1,C1相加除以3所得结果放入E2表格。

• 输出，通过header头，下载Excel文件

        header('Content-Type: application/vnd.ms-excel');
        header('Content-Disposition: attachment;filename="filename.xls"');
        header('Cache-Control: max-age=0');
        // If you're serving to IE 9, then the following may be needed
        header('Cache-Control: max-age=1');
        // If you're serving to IE over SSL, then the following may be needed
        header('Expires: Mon, 26 Jul 1997$hourValueGMT'); // Date in the past
        header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT'); // always modified
        header('Cache-Control: cache, must-revalidate'); // HTTP/1.1
        header('Pragma: public'); // HTTP/1.0
        $objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
        $objWriter->save('php://output');
        $objPHPExcel->disconnectWorksheets();

其他的有用的方法：

• 获取行列等

        $Column = $objPHPExcel->getActiveSheet()
            ->getCell('B2')->getColumn();
        $Row = $objPHPExcel->getActiveSheet()
            ->getCell('B2')->getRow();
        $Value = $objPHPExcel->getActiveSheet()
            ->getCell('B2')->getValue();

以上分别可以得到相应的列，行，和表格对应的值，但如果单元格里面放的公式，则返回时公式，而非结果，如上，获取E2则返回结果SUM(A1:C1）/3。

• 合并单元格

    $objPHPExcel->getActiveSheet()->mergeCells("A1:A3"); //将A列的1,2，3行合并为一行

• 增加样式

        $objPHPExcel->getActiveSheet()->getStyle( 'A1:' . $lineIndex . '1')->getFont()->setBold(true);  //加粗
        $objPHPExcel->getActiveSheet()->getStyle( 'A1:' . $lineIndex . '1')->getFill()->setFillType(PHPExcel_Style_Fill::FILL_SOLID); // 背景填充方式
        $objPHPExcel->getActiveSheet()->getStyle( 'A1:' . $lineIndex . '1')->getFill()->getStartColor()->setARGB('B0C4DE');  //加颜色
  

• 数组方式

     * <code>
     * $objPHPExcel->getActiveSheet()->getStyle('B2')->applyFromArray(
     *         array(
     *             'font'    => array(
     *                 'name'      => 'Arial',
     *                 'bold'      => true,
     *                 'italic'    => false,
     *                 'underline' => PHPExcel_Style_Font::UNDERLINE_DOUBLE,
     *                 'strike'    => false,
     *                 'color'     => array(
     *                     'rgb' => '808080'
     *                 )
     *             ),
     *             'borders' => array(
     *                 'bottom'     => array(
     *                     'style' => PHPExcel_Style_Border::BORDER_DASHDOT,
     *                     'color' => array(
     *                         'rgb' => '808080'
     *                     )
     *                 ),
     *                 'top'     => array(
     *                     'style' => PHPExcel_Style_Border::BORDER_DASHDOT,
     *                     'color' => array(
     *                         'rgb' => '808080'
     *                     )
     *                 )
     *             ),
     *             'quotePrefix'    => true
     *         )

假如列大于Z，可以通过这个方法转化为对应AA，AB等，从0开始。

    private function stringFromColumnIndex($pColumnIndex = 0)
    {
        static $_indexCache = array();

        if (!isset($_indexCache[$pColumnIndex])) {
            if ($pColumnIndex < 26) {
                $_indexCache[$pColumnIndex] = chr(65 + $pColumnIndex);
            } elseif ($pColumnIndex < 702) {
                $_indexCache[$pColumnIndex] = chr(64 + ($pColumnIndex / 26)) . chr(65 + $pColumnIndex % 26);
            } else {
                $_indexCache[$pColumnIndex] = chr(64 + (($pColumnIndex - 26) / 676)) . chr(65 + ((($pColumnIndex - 26) % 676) / 26)) . chr(65 + $pColumnIndex % 26);
            }
        }
        return $_indexCache[$pColumnIndex];
    }

        foreach ($mergeArray as $singleMergeArray) {
            $objPHPExcel->getActiveSheet()->mergeCells("A$singleMergeArray[0]:A$singleMergeArray[1]");
            $objPHPExcel->getActiveSheet()->getStyle("A$singleMergeArray[0]:A$singleMergeArray[1]")->getAlignment()->setVertical(PHPExcel_Style_Alignment::VERTICAL_CENTER);
            if (($singleMergeArray[1] - $singleMergeArray[0]) > 2) {
                $lastMergeIndex = $singleMergeArray[1] - 2;
                $objPHPExcel->getActiveSheet()->mergeCells("D$singleMergeArray[0]:D$lastMergeIndex");
                $objPHPExcel->getActiveSheet()->getStyle("D$singleMergeArray[0]:D$lastMergeIndex")->getAlignment()->setVertical(PHPExcel_Style_Alignment::VERTICAL_CENTER);
            }
        }