function romanize($num) {
$n = intval($num);
$result = '';
// Declare a lookup array that we will use to traverse the number:
$lookup = array('M' => 1000, 'CM' => 900, 'D' => 500, 'CD' => 400,
'C' => 100, 'XC' => 90, 'L' => 50, 'XL' => 40,
'X' => 10, 'IX' => 9, 'V' => 5, 'IV' => 4, 'I' => 1);
// Now, let's work our way through the values, building the string
// as we go: At each step, divide out the maximum matches at this
// level, echo out that many characters and then drop the number
// down to the remainder and repeat:
foreach ($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;
}
echo "\n 2005 = ", romanize(2005);
echo "\n 1999 = ", romanize(1999);
echo "\n 42 = ", romanize(42);
$n = intval($num);
$result = '';
// Declare a lookup array that we will use to traverse the number:
$lookup = array('M' => 1000, 'CM' => 900, 'D' => 500, 'CD' => 400,
'C' => 100, 'XC' => 90, 'L' => 50, 'XL' => 40,
'X' => 10, 'IX' => 9, 'V' => 5, 'IV' => 4, 'I' => 1);
// Now, let's work our way through the values, building the string
// as we go: At each step, divide out the maximum matches at this
// level, echo out that many characters and then drop the number
// down to the remainder and repeat:
foreach ($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;
}
echo "\n 2005 = ", romanize(2005);
echo "\n 1999 = ", romanize(1999);
echo "\n 42 = ", romanize(42);
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