webHauser Blog

function roman ($nr ) {
     $base_digits= array (
           1=> "I",
           10=> "X",
           100=> "C",
           1000=> "M",
           );
     $help_digits= array (
           5=> "V",
           50=> "L",
           500=> "D",
           );
     $all_digits= $base_digits+ $help_digits;
     foreach ($base_digits as $key1=> $value1 )
           foreach ($all_digits as $key2=> $value2 )
                 if ($key1< $key2 )
                       $segments[$key2- $key1 ]= $value1. $value2;
     $segments+= $all_digits;
     krsort ($segments );
     foreach ($segments as $key=> $value )
           while ($key<= $nr ) {
                 $nr-= $key;
                 $str.= $value;
                 }
     return $str;
     }

echo roman (888);  //  prints DCCCLXXXVIII