if($this->input->post())
{ $file_element_name = 'image'; //this is the name of your input file. for example "image" if ($_FILES['image']['name']!= "") { $config['upload_path'] = './uploads/'; $config['allowed_types'] = 'gif|jpg|png|exe|xls|doc|docx|xlsx|rar|zip'; $config['max_size'] = '8192'; $config['remove_spaces']=TRUE; //it will remove all spaces $config['encrypt_name']=TRUE; //it wil encrypte the original file name $this->load->library('upload', $config); if (!$this->upload->do_upload($file_element_name)) { $error = array('error' => $this->upload->display_errors()); $this->session->set_flashdata('error',$error['error']); redirect('controller_name/function_name','refresh'); } else { $data = $this->upload->data(); return $data['file_name']; } $this->session->set_flashdata('msg','success message'); redirect('controller_name/function_name','refresh'); } else { //if no file uploaded the do stuff here }
}

<?php namespace App\Controllers;
class UsersController extends BaseController
{ public function index(){ return view('users'); } public function fileUpload(){ // Validation $input = $this->validate([ 'file' => 'uploaded[file]|max_size[file,1024]|ext_in[file,jpg,jpeg,docx,pdf],' ]); if (!$input) { // Not valid $data['validation'] = $this->validator; return view('users',$data); }else{ // Valid if($file = $this->request->getFile('file')) { if ($file->isValid() && ! $file->hasMoved()) { // Get file name and extension $name = $file->getName(); $ext = $file->getClientExtension(); // Get random file name $newName = $file->getRandomName(); // Store file in public/uploads/ folder $file->move('../public/uploads', $newName); // File path to display preview $filepath = base_url()."/uploads/".$newName; // Set Session session()->setFlashdata('message', 'Uploaded Successfully!'); session()->setFlashdata('alert-class', 'alert-success'); session()->setFlashdata('filepath', $filepath); session()->setFlashdata('extension', $ext); }else{ // Set Session session()->setFlashdata('message', 'File not uploaded.'); session()->setFlashdata('alert-class', 'alert-danger'); } } } return redirect()->route('/'); }
}