Question

I have the following code:

for($n=1; $n<=100; $n++)
{
    echo $n . '<br />';
}

How could I change it so it shows a word for:

multiples of three

multiples of three and five

Answer 1

for($n=1; $n<=100; $n++)
{
    $multiplies = '';
    for($m=1; $m<=$n; $m++){
        if ($n % $m == 0){
          $multiplies .= $m .' ';
        }

    }
    echo $n . ' multiplies by: '  $multiplies .'<br />';
}

This is general solution to check ALL numbers from the range for being multiplies for current number.

You can make a function from this code:

function ShowMultiplies($range){}

So in code you will use $range instread of 100.