How to get the number of columns of worksheet as integer (28) instead of Excel-letters (“AB”)?

Question

Given:

$this->objPHPExcelReader = PHPExcel_IOFactory::createReaderForFile($this->config[\'file\']);
$this->objPHPExcelReader->setLoadSheetsOnly(a         


        

Answer 1

    function getNameFromNumber($num) {//(Example 0 = A, 1 = B)
$numeric = $num % 26;
$letter = chr(65 + $numeric);
$num2 = intval($num / 26);
if ($num2 > 0) {
    return getNameFromNumber($num2 - 1) . $letter;
} else {
    return $letter;
}
}

getNameFromNumber(0) //return A