PHP - check if number is prime

Question

I\'m trying to create a function which checks whether the number is prime or not. BUT I want this function to echo to the user \'prime\' or \'NOT prime\' - and that\'s where my

Answer 1

You can print "Prime" as a return to the function to ensure nothing is printed during the function except for the condition for "NOT prime".

   class IsPrime
    {       
        function check($num)
        {
            for ($i = 2; $i < $num; $i++)
            {
                if ($num % $i == 0) 
                {
                    echo 'NOT prime';
                    break;
                }               
            }
          return "Prime";         
        }       
    }

    $x = new IsPrime();
    echo $x->check(4);