Convert numeric to roman numeric in php and jquery

Convert numeric to roman numeric in php and jquery 

PHP Function to convert descimal numeric to roman numeric

<?php 

function getRomanNumeric($yournumber) 
{
 $n = intval($yournumber);
 $res = '';

 $roman_numeric = 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 ($roman_numeric as $roman => $numeric) 
 {
  $matches = intval($n / $numeric);
  $res .= str_repeat($roman, $matches);
  $n = $n % $numeric;
 }

 return $res;
}

echo getRomanNumeric(2);  ////Ouput of convert numeric to roman numeric -  II

?>

jQuery function to convert decimal numeric to roman numeric 

function convertToRoman(num) {
var roman = "";

var lookupObj = {
   1000:"M",
   900:"CM",
   500:"D",
   400:"CD",
   100:"C",
   90:"XC",
   50:"L",
   40:"XL",
   10:"X",
   9:"IX",   
   4:"IV",
   5:"V",
   1:"I",
};

var arrayLen = Object.keys(lookupObj).length;

while(num>0){

 for (i=arrayLen-1 ; i>=0 ; i--){

  if(num >= Object.keys(lookupObj)[i]){

    roman = roman + lookupObj[Object.keys(lookupObj)[i]];        
    num = num - Object.keys(lookupObj)[i];
    break;

  }
 }
}    

return roman;

}