title: Add a comment in a sheet with PHPEXCEL
body: <p>I'm trying with this code to add a comment in a Excel cell :</p>
  
  <pre><code>$objPHPExcel-&gt;getActiveSheet()-&gt;getComment(($arr_periodes[2]+1),17+($arr_periodes[1]))-&gt;setAuthor($user-&gt;prenom.' '.$user-&gt;nom);
                             $objCommentRichText = $objPHPExcel-&gt;getActiveSheet()-&gt;getComment(($arr_periodes[2]+1),17+($arr_periodes[1]))-&gt;getText()-&gt;createTextRun($res-&gt;commentaire);
                             $objCommentRichText-&gt;getFont()-&gt;setBold(true);
                             $objPHPExcel-&gt;getActiveSheet()-&gt;getComment(($arr_periodes[2]+1),17+($arr_periodes[1]))-&gt;getText()-&gt;createTextRun("\r\n");
                             $objPHPExcel-&gt;getActiveSheet()-&gt;getComment(($arr_periodes[2]+1),17+($arr_periodes[1]))-&gt;getText()-&gt;createTextRun($res-&gt;commentaire);
  </code></pre>
  
  <p>It opens file, but I need to repair it and comments doesn't show.</p>
  
  <p>This is my writer :</p>
  
  <pre><code>$writer = new PHPExcel_Writer_Excel2007($objPHPExcel);
  </code></pre>
  
  <p><strong>EDIT</strong></p>
  
  <p>This code works :</p>
  
  <pre><code>$objPHPExcel-&gt;getActiveSheet()
                              -&gt;getComment('E11')
                              -&gt;getText()-&gt;createTextRun($user-&gt;commentaire);
  </code></pre>
  
  <p>Is it possible to put a variable in place of E11 ?</p>
  
  <p>I have to use setCellValueByColumnAndRow, thus 5,11 i.e.</p>
  
  <p><strong>EDIT</strong></p>
  
  <p>My problem persists :</p>
  
  <p>I tried with this :</p>
  
  <pre><code>objPHPExcel-&gt;getActiveSheet()
                              -&gt;getComment(($arr_periodes[2]+1),(17+$arr_periodes[1]))
                              -&gt;getText()-&gt;createTextRun($user-&gt;commentaire);
  </code></pre>
  
  <p>($arr_periodes[2]+1) contains in exemple 4 AND (17+$arr_periodes[1]) contains in exemple 20</p>
  
  <p>The refernece is 4,17</p>
  
  <p><strong>The problem is that the first parameter has to be a letter !</strong></p>
  
  <p>The file is only 17K and I have to repair it when I open it.</p>
  
  <p>Any Idea ?</p>