Here is the program we can use to get LCM of two number using PHP.

BY Best Interview Question ON 11 Aug 2019

Example

// 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);