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安装

composer require phpoffice/phpspreadsheet

引用

use PhpOffice\PhpSpreadsheet\Reader\Xlsx;
use PhpOffice\PhpSpreadsheet\Reader\Xls;
use PhpOffice\PhpSpreadsheet\IOFactory;
use PhpOffice\PhpSpreadsheet\Cell\Coordinate;
use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\Worksheet\PageSetup;
use PhpOffice\PhpSpreadsheet\Cell\DataType;
use PhpOffice\PhpSpreadsheet\Style\Fill;
use PhpOffice\PhpSpreadsheet\Style\Color;
use PhpOffice\PhpSpreadsheet\Style\Alignment;
use PhpOffice\PhpSpreadsheet\Style\Border;
use PhpOffice\PhpSpreadsheet\Style\NumberFormat;

导入Excel

public function importExcel(string $file = '', int $sheet = 0, int $columnCnt = 0, &$options = [])
    {
        try {
            /* 转码 */
            $file = iconv("utf-8", "gb2312", $file);

            if (empty($file) OR !file_exists($file)) {
                throw new \Exception('文件不存在!');
            }

            /** @var Xlsx $objRead */
            $objRead = IOFactory::createReader('Xlsx');

            if (!$objRead->canRead($file)) {
                /** @var Xls $objRead */
                $objRead = IOFactory::createReader('Xls');

                if (!$objRead->canRead($file)) {
                    throw new \Exception('只支持导入Excel文件！');
                }
            }

            /* 如果不需要获取特殊操作，则只读内容，可以大幅度提升读取Excel效率 */
            empty($options) && $objRead->setReadDataOnly(true);
            /* 建立excel对象 */
            $obj = $objRead->load($file);
            /* 获取指定的sheet表 */
            $currSheet = $obj->getSheet($sheet);

            if (isset($options['mergeCells'])) {
                /* 读取合并行列 */
                $options['mergeCells'] = $currSheet->getMergeCells();
            }

            if (0 == $columnCnt) {
                /* 取得最大的列号 */
                $columnH = $currSheet->getHighestColumn();
                /* 兼容原逻辑，循环时使用的是小于等于 */
                $columnCnt = Coordinate::columnIndexFromString($columnH);
            }

            /* 获取总行数 */
            $rowCnt = $currSheet->getHighestRow();
            $data   = [];

            /* 读取内容 */
            for ($_row = 1; $_row <= $rowCnt; $_row++) {
                $isNull = true;

                for ($_column = 1; $_column <= $columnCnt; $_column++) {
                    $cellName = Coordinate::stringFromColumnIndex($_column);
                    $cellId   = $cellName . $_row;
                    $cell     = $currSheet->getCell($cellId);

                    if (isset($options['format'])) {
                        /* 获取格式 */
                        $format = $cell->getStyle()->getNumberFormat()->getFormatCode();
                        /* 记录格式 */
                        $options['format'][$_row][$cellName] = $format;
                    }

                    if (isset($options['formula'])) {
                        /* 获取公式，公式均为=号开头数据 */
                        $formula = $currSheet->getCell($cellId)->getValue();

                        if (0 === strpos($formula, '=')) {
                            $options['formula'][$cellName . $_row] = $formula;
                        }
                    }

                    if (isset($format) && 'm/d/yyyy' == $format) {
                        /* 日期格式翻转处理 */
                        $cell->getStyle()->getNumberFormat()->setFormatCode('yyyy/mm/dd');
                    }

                    $data[$_row][$cellName] = trim($currSheet->getCell($cellId)->getFormattedValue());

                    if (!empty($data[$_row][$cellName])) {
                        $isNull = false;
                    }
                }

                /* 判断是否整行数据为空，是的话删除该行数据 */
                if ($isNull) {
                    unset($data[$_row]);
                }
            }

            return $data;
        } catch (\Exception $e) {
            throw $e;
        }
    }

获取日期格式

默认获取的是日期的值（日期数字42380表示从1900-1-1开始的第42380天，即2016-1-11）跟PHP中的时间戳不一致

// 默认
$value = \PhpOffice\PhpSpreadsheet\Shared\Date::excelToTimestamp($value);

导出数据

use PhpOffice\PhpSpreadsheet\Spreadsheet;
use PhpOffice\PhpSpreadsheet\Writer\Xlsx;

$spreadsheet = new Spreadsheet();
$sheet = $spreadsheet->getActiveSheet();
$sheet->setTitle('工作表一');
$sheet->setCellValue('A1', '11');
$sheet->setCellValue('B1', '22');
$writer = new Xlsx($spreadsheet);
$filename = date('YmdHis',time());
$writer->save($filename.'.xlsx');