Numbers to Roman Number Convertion php

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Numbers to Roman number Conversion php

Using ph arrays conversion of Numbers in to roman numbers could be done.
   
45 = XLV = 45

Enter Number

Number:

Following php scripts covert number in to roman number.

<?php      $natural_roman = array(1000 => 'M', 500 => 'D', 100 => 'C', 50 => 'L', 10 => 'X', 5 => 'V', 1 => 'I');      function to_natural($numeral)    {        global $natural_roman;        $numeral = str_replace(                                array('CM', 'CD', 'XC', 'XL', 'IX', 'IV'),                                array('DCCCC', 'CCCC', 'LXXXX', 'XXXX', 'VIIII', 'IIII'),                                trim($numeral)                            );                              for ($total = 0, $n = 0; $n < strlen($numeral); $n++)        {            if ($numeral[$n] == 'I' && $n <> strlen($numeral)-1 && $numeral[$n+1] <> 'I')                $number = array_search($numeral[++$n], $natural_roman)-1;            else                $number = array_search($numeral[$n], $natural_roman);            $total += $number;        }        return $total;    }      // convert to roman numbers    function to_roman($natural)    {        global $natural_roman;        reset($natural_roman);        while (list($key, $value) = each($natural_roman))        {            while ($natural >= $key)            {                $natural -= $key;                $rn .= $value;            }        }        return str_replace(                                array('DCCCC', 'CCCC', 'LXXXX', 'XXXX', 'VIIII', 'IIII'),                                      array('CM', 'CD', 'XC', 'XL', 'IX', 'IV'),                                $rn                            );          }      // * example use - show roman numbers for 1 to 500 and then convert back * //      $n=$_POST['num'];        $rom = to_roman($n);        $nat = to_natural($rom);        echo '<center>'.$n . ' = ' . $rom . ' = ' . $nat . '<center>';   ?> <div id="formContent" align="center">         <form action="" method="post" enctype="multipart/form-data">         <fieldset style="width: 100px; height: 100px;">             <legend>Enter Number</legend>             <table border="0" width=10>                 <tr>                     <td><label for="country">Number: </label></td>                     <td><input type="text"  name="num">                     <input type="submit" id="submit" name="submit" value="Find Romen Number"></td>                 </tr>                                                                                      </fieldset>           </table>         </form>     </div>