Excel File Import using PHPExcel in codeigniter - php

Question

Okay so I am trying to insert my data via using this code and as you can see here everything looks fine but still I'm getting issue like whenever I just insert one row it redirects me back to access denied and data don't get insert while when I make these rows two in excel file it inserts data immediately
if (isset($_FILES['employees_file'])) {
$file = $_FILES['employees_file']['tmp_name'];
$this->load->library('PHPExcel');
$excel = PHPExcel_IOFactory::load($file);
// $sheet = $excel->getSheet(0);
foreach($excel->getWorksheetIterator() as $worksheet)
{
$highestRow = $worksheet->getHighestRow();
$highestColumn = $worksheet->getHighestColumn();
for($row=2; $row<=$highestRow; $row++)
{
$data[] = array(
'first_name' => ($cellValue = $worksheet->getCellByColumnAndRow(0, $row)->getValue()) == "" ? null : $cellValue,
'last_name' =>$worksheet->getCellByColumnAndRow(1, $row)->getValue(),
'enroll_id' =>$worksheet->getCellByColumnAndRow(2, $row)->getValue(),
'nic' =>$worksheet->getCellByColumnAndRow(3, $row)->getValue(),
'job_title_id' =>$worksheet->getCellByColumnAndRow(4, $row)->getValue(),
'join_date' =>$worksheet->getCellByColumnAndRow(5, $row)->getValue(),
'loc_id' =>$worksheet->getCellByColumnAndRow(6, $row)->getValue(),
'supervisor_id' =>$worksheet->getCellByColumnAndRow(7, $row)->getValue(),
'dob' =>$worksheet->getCellByColumnAndRow(8, $row)->getValue(),
'dept_id' =>$worksheet->getCellByColumnAndRow(9, $row)->getValue(),
'email' =>$worksheet->getCellByColumnAndRow(10, $row)->getValue(),
'official_email' =>$worksheet->getCellByColumnAndRow(11, $row)->getValue(),
'phone' =>$worksheet->getCellByColumnAndRow(12, $row)->getValue(),
'address' =>$worksheet->getCellByColumnAndRow(13, $row)->getValue(),
'marital_status' =>$worksheet->getCellByColumnAndRow(14, $row)->getValue(),
'gender' =>$worksheet->getCellByColumnAndRow(15, $row)->getValue(),
'rel_name' =>$worksheet->getCellByColumnAndRow(16, $row)->getValue(),
'rel_relation' =>$worksheet->getCellByColumnAndRow(17, $row)->getValue(),
'rel_contact' =>$worksheet->getCellByColumnAndRow(18, $row)->getValue(),
'employment_status' =>$worksheet->getCellByColumnAndRow(19, $row)->getValue(),
'date_of_confirmation' =>$worksheet->getCellByColumnAndRow(20, $row)->getValue(),
'gross_salary' =>$worksheet->getCellByColumnAndRow(21, $row)->getValue(),
'dept_role' =>$worksheet->getCellByColumnAndRow(22, $row)->getValue(),
);
}
}
// array_shift($data);
$this->SqlModel->insert($data);
}
if ($this->db->affected_rows() > 0) {
redirect('employees/index/success');
} else {
redirect(base_url().'accessdenied');
}