title: getCellByColumnAndRow unable to retrieve data on merge cells
body: <p>I'm new on PHPExcel. I just want to know if it's possible to retrieve data from a merge cells using the function <code>getCellByColumnAndRow()</code>. </p>
  
  <p>I'm trying to retrieve data from a merge cells using row and column number. I used this:</p>
  
  <pre><code>$excel-&gt;getActiveSheet()-&gt;getCellByColumnAndRow(1,1)-&gt;getValue()
  </code></pre>
  
  <p>but it doesn't return any value or error, and when I tried to use this:</p>
  
  <pre><code>excel-&gt;getActiveSheet()-&gt;getCell('A1')-&gt;getValue()
  </code></pre>
  
  <p>It returns the value. What's the solution?</p>
  
  <p>Cells A1 to D1 were merge in my Excel file.</p>