function number2roman ($num
{
// http://www.go4expert.com/forums/showthread.php?t=4948
// Make sure that we only use the integer portion of the value
$n = intval$num);
$result = ''
// Declare a lookup array that we will use to traverse the number:
$lookup = array'M' => 1000, 'CM' => 900, 'D' => 500, 'CD' => 400,
'C' => 100, 'XC' => 90, 'L' => 50, 'XL' => 40,
'X' => 10, 'IX' => 9, 'V' => 5, 'IV' => 4, 'I' => 1);
foreach ($lookup as $roman => $value)
{
// Determine the number of matches
$matches = intval$n / $value);
// Store that many characters
$result .= str_repeat$roman, $matches);
// Substract that from the number
$n = $n % $value
}
// The Roman numeral should be built, return it
return $result
}