使用phpexcel库删除excel文件中的空列

Question

I am using phpexcel library to read an excel file.It works perfeclty on 99%. But sometimes it reads empty columns also.My code is

try {
    $inputFileType = PHPExcel_IOFactory::identify($inputFileName);
    $objReader = PHPExcel_IOFactory::createReader($inputFileType);
    $objPHPExcel = $objReader->load($inputFileName);
} catch(Exception $e) {
    die('Error loading file');
}   

$worksheet=$objPHPExcel->getActiveSheet();) {
$worksheetTitle     = $worksheet->getTitle();
$highestRow         = $worksheet->getHighestRow();
$highestColumn      = $worksheet->getHighestColumn();
$highestColumnIndex = PHPExcel_Cell::columnIndexFromString($highestColumn);
$nrColumns = ord($highestColumn) - 64;

sometimes the $highestcolumn returns 'WVL' even if the data in excel column up to 'C' why?. Also i want to check all the rows under a particular column is empty or not,Is there any easy method to do it instead of iterating all rows using for loop.

Answer 1

The getHighestRow() and getHighestColumn() methods work on the basis of testing for anything related to a cell, even if that's a style setting or a named range or print settings or a column/row setting such as width/height or hidden.

That's why the getHighestDataRow() and getHighestDataColumn() methods exist. These two methods look at the actual data in cells.

Note: Just because a cell looks empty when you view it in MS Excel, doesn't mean that it actually is empty. NULL is a valid cell value, as is a space character, neither of which is visible.

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In answer to your second question: you can pass an optional argument to the getHighestRow(), getHighestColumn() and to the getHighestDataRow() and getHighestDataColumn(), so a row number passed to getHighestColumn() or getHighestDataColumn() will return the highest column in the specified row; and a column letter passed to getHighestRow() or getHighestDataRow() will return the highest row in that column.

e.g.

$highestColumnInRow5 = $worksheet->getHighestColumn(5);

or

$highestDataRowInColumnAA = $worksheet->getHighestDataRow('AA');