<?php
  $counter = 0;
  echo '<table>';
  for ($i=0; $i < 10; $i++) {
    echo '<tr>';
    for ($j=0; $j < 10; $j++) {
      echo "<td>";
      while (true) {
        if ($counter % 2 != 0) {
          echo $counter;
          $counter++;
          break;
        }
        $counter++;
      }
      echo "</td>";
    }
    echo "</tr>";
  }
  echo '</table>';
 ?>