URGENT! Write a valid HTML + PHP Page that will count numbers from 1 to 1,000,000?

6

Thank you. I have adjust the code a little, See Below. Kindly help me check. @camperextraordinaire, Pls be a good teacher. I know you can assist. I will appreciate.

<b> This in bold</b> 
<u>This is underline</u> 
<i>This is italic</i>
<?php  
     for ($i = 1; $i <= 1000000; ++$i) {

     $mod3 = $i % 3;
     $mod10 = $i % 10;
     $str = '';
     if (!$mod3) {
       $str = '<p style="color: red;"><u>$i</u></p>';
     }
     if (!$mod10) {
       $str .= '<p style="color: blue;"><u>$i</u></p>';
     }
     if ($mod3 && $mod10) {
       $str .= '<p style="color: purple;"><em>$i</em></p>';
     }
     echo $str, "\n"; // gives: the color is red, blue, purple
    }
?>