array values shows null

this is my coding


      $objWorksheet=$objPHPExcel->setActiveSheetIndex(0); 
      for($i=12;$i<=20;$i++)
      {       
      $regno= $objWorksheet->getCellByColumnAndRow(2,$i)->getValue();
      $assmark= $objWorksheet->getCellByColumnAndRow(5,$i)->getValue();


    $data=array( 'regno'=>$regno,$ass=>$assmark);
    echo '<pre>';
    print_r($data);
    echo '</pre>';
my actual output will be 8. but i got more values with null. what is wrong with this. i attached my output screen also

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Your $i variable should not be 12.

It should probably be 0 or 1

What did you Try? What did you Get? What did you Expect?

Joined CodeIgniter Community 2009.  ( Skype: insitfx )

Your $i variable should not be 12.

It should probably be 0 or 1

I got it. Thanks