0) ? $match[4] : $match[2]);
// Remove traililng 0's from fraction, then add the decimal and one trailing
// 0 and a space. The space serves as a way to always sort shorter decimal
// numbers that match exactly as less than longer ones.
// Ex: 3.05 and 3.05011.
$fraction = trim('.' . $match[3], '0') . '0 ';
$encode = sprintf('%02u', strlen($whole)) . $whole . $fraction;
if (strlen($match[1])) {
// Negative number. Make 10's complement. Put back any leading white space
// and the dash requires intermediate to avoid double-replacing the same
// digit. str_replace() seems to work by copying the source to the result,
// then successively replacing within it, rather than replacing from the
// source to the result.
// In this case since rules are reverced we also have to use a character
// that would be sorted higher than a space when a number is being compared
// against a longer one that is identical in negative numbers. This is so
// that longer numbers are always LESS than sorter numbers that have
// identical beginnings. Ex: -3.05 and -3.05011.
$digits = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ' '];
$intermediate = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k'];
$rev_digits = ['9', '8', '7', '6', '5', '4', '3', '2', '1', '0', ':'];
$encode = $match[1] . str_replace($intermediate, $rev_digits, str_replace($digits, $intermediate, $encode));
}
return $encode;
}