PHPExcel Column Loop

Question

How can I do a loop which based on Excel worksheet columns? I found (and used) WorksheetIterator, RowIterator and CellIterator but nothing about columns.

Answer 1

loop columns as range

foreach ( range('A', $Excel->getActiveSheet()->getHighestColumn()) as $column_key) {

}

Answer 2

Try this! Work!

$limit = 10000;
$value='sua mensagem'
for($i=0,$j='A';$i<$limit;$i++,$j++) {
    $objPHPExcel->setActiveSheetIndex(0)
  ->setCellValue($j.$i, $value);
}

set in $value what you want print.

Answer 3

This short snippet provides loop throught rows of columns. It gets the indexes of last non empty column (and its row) and loops to that indexes, so be aware of forgotten values in excel.

Code loops throught rows of column A, then rows of column B ...

$objReader = new PHPExcel_Reader_Excel2007();
$objReader->setReadDataOnly(true);
$objPHPExcel = $objReader->load($file);

foreach ($objPHPExcel->getWorksheetIterator() as $worksheet) 
{
    $worksheetTitle = $worksheet->getTitle();
    $highestColumn = $worksheet->getHighestColumn();
    $highestColumnIndex = PHPExcel_Cell::columnIndexFromString($highestColumn);

    // expects same number of row records for all columns
    $highestRow = $worksheet->getHighestRow();

    for($col = 0; $col < $highestColumnIndex; $col++)
    {
        // if you do not expect same number of row records for all columns
        // get highest row index for each column
        // $highestRow = $worksheet->getHighestRow();

        for ($row = 1; $row <= $highestRow; $row++)
        {
            $cell = $worksheet->getCellByColumnAndRow($col, $row);
            $val = $cell->getValue();
            // do what you want with cell value
        }
    }
}

Answer 4

This is the fix for the getColumnLetter method of the last message, it allows you to get the "letters" of the columns, whatever the number of columns you have

function getColumnLetter( $number ){
    $prefix = '';
    $suffix = '';
    $prefNum = intval( $number/26 );
    if( $number > 25 ){
        $prefix = getColumnLetter( $prefNum - 1 );
    }
    $suffix = chr( fmod( $number, 26 )+65 );
    return $prefix.$suffix;
}

Answer 5

In PhpSpreadsheet ( which replaces PHPExcel ) you can do:

        foreach( $sheet->getColumnIterator() as $col )
        {
            $sheet->getColumnDimension( $col->getColumnIndex() )->setAutosize( true );
        }

Answer 6

This recursive method was designed allows you to get the "letters" of the columns, whatever the number of columns you have, from "A" to "ZZZZZZZZZ..." :

function getColumnLetter( $number )
{
    $prefix = '';
    $suffix = '';
    $prefNum = intval( $number/26 );
    if( $prefNum > 25 )
    {
        $prefix = getColumnLetter( $prefNum );
    }
    $suffix = chr( fmod( $number, 26 )+65 );
    return $prefix.$suffix;
}

So you can loop the columns of an PHP array on index number and convert it to a string of letters and use it in PHPExcel methods, like "setCellValue" ... But solutions above are surely faster if you can use them !