title: PHPExcel reading too slow
body: <p>I know, there are lot's of questions here sbout improving <code>PHPExcel</code> performance. But all of them are about <em>writing</em> data, and my problem is in <em>reading</em>.</p>
  
  <p>My function:</p>
  
  <pre><code>function parse($filename){
      $objPHPExcel = PHPExcel_IOFactory::load($filename); 
      $activeSheet = $objPHPExcel-&gt;getActiveSheet();
      $parsedData = array();
      $columnHeaders = array('order', 'ts', 'summ', 'name', 'quant', 'price', 'bccu');
      foreach ($activeSheet-&gt;getRowIterator() as $rkey =&gt; $row) {
          $cellIterator = $row-&gt;getCellIterator();
          foreach ($cellIterator  as $ckey =&gt; $cell) {
              $parsedData[$columnHeaders[$ckey]] = $cell-&gt;getCalculatedValue();
          }
      }
      return $parsedData;
  }
  </code></pre>
  
  <p>The file contains ~300 rows and 7 columns. And this script fails to run in 30 seconds.</p>
  
  <p>How can i improve it?</p>
  
  <p><strong>edit:</strong></p>
  
  <p>used </p>
  
  <pre><code>$objReader = PHPExcel_IOFactory::createReader("Excel2007");
  $objPHPExcel = $objReader-&gt;load($filename); 
  </code></pre>
  
  <p>whth no success</p>