How to wrap columns two and two inside of a loop?

Question

I'm trying to wrap two columns inside of a row div from inside a php loop.

I came up with this test but it fails no matter what I do.. This is the closest I can come, I can't see where this logic fails.

Take a look:

<?php $i = 0; ?>
<?php while($i < 11) : ?>

  <?php if ($i % 2 === 0) : ?>

    <div class="row">row

  <?php endif; ?>

  <span><?php echo "[" . $i . "]"; ?></span>

  <?php if (!$i % 2 === 0) : ?>

     /row
    </div>

  <?php endif; ?>

  <?php $i++; ?>
<?php endwhile; ?>

The produced result:

row [0] [1] /row
row [2] /row
[3] /row
row [4] /row
[5] /row
row [6] /row
[7] /row
row [8] /row
[9] /row
row [10] /row

Here we can see that the first row is working great but then it becomes flawed somewhere in the logic, question is where?

Answer 1

Made a little changes to your code.

  <?php $i = 0; 
       while($i <= 11) :  
       if($i%2==0){
        echo '<div class="row"> Row';
       } 
         echo "[" . $i . "]"; 

       if($i%2!=0){
        echo " row </div>";
       }
       $i++; 
     endwhile; ?>

It will output

 Row[0][1] row
 Row[2][3] row
 Row[4][5] row
 Row[6][7] row
 Row[8][9] row
 Row[10][11] row