How to find out how many rows and columns to read from an Excel file with PHPExcel

Question

I may use PHPExcel to read the cells out of an Excel file by using the following code. Right now, I choose manually how many rows and columns to read.

If some rows and columns are left blank, is there a way for PHPExcel to tell me how many rows and columns I need to read to extract all the data from the worksheet?

$file_name = htmlentities($_POST['file_name']);
$sheet_name = htmlentities($_POST['sheet_name']);
$number_of_columns = htmlentities($_POST['number_of_columns']);
$number_of_rows = htmlentities($_POST['number_of_rows']);

$objReader = PHPExcel_IOFactory::createReaderForFile("data/" . $file_name);
$objReader->setLoadSheetsOnly(array($sheet_name));
$objReader->setReadDataOnly(true);
$objPHPExcel = $objReader->load("data/" . $file_name);

echo '<table border="1">';
for ($row = 1; $row < $number_of_rows; $row++) {
    echo '<tr>';
    for ($column = 0; $column < $number_of_columns; $column++) {
        $value = $objPHPExcel->setActiveSheetIndex(0)->getCellByColumnAndRow($column, $row)->getValue();
        echo '<td>';
        echo $value . '&nbsp;';
        echo '</td>';
    }
    echo '</tr>';
}
echo '</table>';

Answer 1

$file_name = htmlentities($_POST['file_name']);
$sheet_name = htmlentities($_POST['sheet_name']);
$number_of_columns = htmlentities($_POST['number_of_columns']);
$number_of_rows = htmlentities($_POST['number_of_rows']);

$objReader = PHPExcel_IOFactory::createReaderForFile("data/" . $file_name);
$objReader->setLoadSheetsOnly(array($sheet_name));
$objReader->setReadDataOnly(true);

$objPHPExcel = $objReader->load("data/" . $file_name);

$highestColumm = $objPHPExcel->setActiveSheetIndex(0)->getHighestColumn();
$highestRow = $objPHPExcel->setActiveSheetIndex(0)->getHighestRow();

echo 'getHighestColumn() =  [' . $highestColumm . ']<br/>';
echo 'getHighestRow() =  [' . $highestRow . ']<br/>';

echo '<table border="1">';
foreach ($objPHPExcel->setActiveSheetIndex(0)->getRowIterator() as $row) {
    $cellIterator = $row->getCellIterator();
    $cellIterator->setIterateOnlyExistingCells(false);
    echo '<tr>';
    foreach ($cellIterator as $cell) {
        if (!is_null($cell)) {
            $value = $cell->getCalculatedValue();
            echo '<td>';
            echo $value . '&nbsp;';
            echo '</td>';
        }
    }
    echo '</tr>';
}
echo '</table>';