PHPExcel - read time value from a cell
$objPHPExcel = PHPExcel_IOFactory::load($filename);
 $objWorksheet = $objPHPExcel->getActiveSheet();
 echo $objWorksheet->getCellByColumnAndRow(3, 5)->getValue();

$cell = $objWorksheet->getCellByColumnAndRow(3, 5);
$cell_value = PHPExcel_Style_NumberFormat::toFormattedString($cell->getCalculatedValue(), 'hh:mm:ss');
echo $cell_value;