Write a program to get LCM of two numbers using PHP?

                                        
// PHP program to find LCM of two numbers



// Recursive function to

// return gcd of a and b

function gcd( $a, $b)

{

      if ($a == 0)

      return $b;

      return gcd($b % $a, $a);

}



// Function to return LCM

// of two numbers

function lcm( $a, $b)

{

      return ($a * $b) / gcd($a, $b);

}



// Driver Code

$a = 15;

$b = 20;

echo "LCM of ",$a, " and " ,$b, " is ", lcm($a, $b);