title: Phpexcel deleting a column or columns
body: <p>I would like to delete a column one at a time without it deleting the right side of the columns. I have gone through the first row and where if its blank I want to delete the column only. But the function only allows me to delete the column and the one next to it.
  y scenerio Column (M has value) (N has no value) (O has no value) (P has value) (Q has value)</p>
  
  <pre><code>$toremove_arr=array();
  for ($ga='A'; $ga !== $highestCol; $ga++){
      $col=$objPHPExcel-&gt;getActiveSheet()-&gt;getCell($ga.'1')-&gt;getValue();
      if ($col=='') {
          $toremove_arr[]=$ga;
      }
  }
  $toremove_num  = count($toremove_arr);
  for($i=0; $i &lt; $toremove_num; $i++){
      $objPHPExcel-&gt;getActiveSheet()-&gt;removeColumn($toremove_arr[$i], 1);
  }
  </code></pre>