PhpSpreadsheet设置所有单元格边框

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;12345678910111213

   $styleArray1 = [
            'borders' => [
                'allBorders' => [
                    'borderStyle' =>  \PhpOffice\PhpSpreadsheet\Style\Border::BORDER_THIN //细边框
                ]
            ]
        ];

    $sheet ->getStyle('A1'.':'.'K'.$targetcount)->applyFromArray($styleArray1);1234567891011