グリッド線が表示されません。以下は私のコードです。助けてください。
<?php
require_once '../Classes/PHPExcel.php';
$inputFileName = 'current.xlsx';
$inputFileType = PHPExcel_IOFactory::identify($inputFileName);
$objReader = PHPExcel_IOFactory::createReader($inputFileType);
$objPHPExcel = $objReader->load($inputFileName);
$objWorksheet = $objPHPExcel->getActiveSheet();
$objPHPExcel->getActiveSheet()->setShowGridlines(true);
$highestRow = $objWorksheet->getHighestRow();
$highestColumn = $objWorksheet->getHighestColumn();
$highestColumnIndex = PHPExcel_Cell::columnIndexFromString($highestColumn);
echo '<div id="xl">' . "\n";
echo '<table>' . "\n";
for ($row = 1; $row <= 2; ++$row) {
echo '<tr>' . "\n";
for ($col = 0; $col <= $highestColumnIndex; ++$col) {
echo '<td>' . $objWorksheet->getCellByColumnAndRow($col, $row)->getValue() . '</td>' . "\n";
}
echo '</tr>' . "\n";
}
echo '</table>' . "\n";
echo '</div>' . "\n";
?>