Algorithm to get the excel-like column name of a number

Question

I\'m working on a script that generate some Excel documents and I need to convert a number into its column name equivalent. For example:

1 => A
2 => B
         


        

Answer 1

This will do to conversion (assuming integer arithmetic), but I agree with the other posters; just use base_convert

function numberToColumnName($number)
{
    $abc = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    $len = strlen($abc);

    $result = "";
    while ($number > 0) {
       $index  = $number % $len;
       $result = $abc[$index] . $result;
       $number = floor($number / $len);
    }

    return $result;
}