PHP - check if number is prime

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野趣味
野趣味 2021-01-25 00:03

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

18条回答
  •  醉梦人生
    2021-01-25 00:52

    try this

    class IsPrime
    {       
    function check($num)
    {
        for ($i = 2; $i < $num; $i++)
        {
            if ($num % $i == 0) 
            {
                echo 'NOT prime';
                break;
            }
            else
            {
                echo 'Prime';
            }
        }
        //echo 'Prime';           
    }       
    }
      $x = new IsPrime();
      $x->check(3);
    

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