add to database PHPEXCEL AND CODEIGNITER

add.php

public function index()
	{
		$this->load->library('excel');
		$objReader = PHPExcel_IOFactory::createReader('Excel2007');
		$objReader->setReadDataOnly(true);
		$objPHPExcel = $objReader->load("uploads/foghetakhasos.xlsx");
		$objWorksheet = $objPHPExcel->getActiveSheet();
		$highestRow = $objWorksheet->getHighestRow(); 
		$highestColumn = $objWorksheet->getHighestColumn(); 
		$this->load->database();
		$highestColumnIndex = PHPExcel_Cell::columnIndexFromString($highestColumn); 
		

		for ($row = 1; $row <= $highestRow; ++$row) {
		 
		  if($objWorksheet->getCellByColumnAndRow(0, $row)->getValue()!='')
		  {
			  $value = trim($objWorksheet->getCellByColumnAndRow(0, $row)->getValue(),chr(0xC2).chr(0xA0));
			  $data = array(
        		'title' => $value,
        		'type' => 'foghtakhasos',
			);
			$this->db->insert('expertslist', $data);
			 echo 'inserted';
		  }
		

		}
	
	}