welcome.php

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class welcome extends CI_Controller{
	function __construct(){
		parent::__construct();
	}

	public function index(){
		$this->load->view('login');
	}
	function login(){
		$username = $this->input->post('admin_username');
		$password = $this->input->post('admin_password');
		$this->form_validation->set_rules('admin_username','Username','trim|required');
		$this->form_validation->set_rules('admin_password','Password','trim|required');

		if($this->form_validation->run() != false){
			$where = array('username' => $username, 'password' => md5($password) );

			$data = $this->m_perpus->edit_data($where, 'admin');
			$d = $this->m_perpus->edit_data($where, 'admin')->row();
			$cek = $data->num_rows();

			if($cek > 0){
				$session = array('id' => $d->id_admin, 'nama' => $d->nama_admin, 'status'	=> 'login');
				$this->session->set_userdata($session);
				redirect(base_url().'admin');
			}else{
				$this->session->set_flashdata('alert', 'login gagal! username atau password salah.');
				redirect(base_url());
			}

		}else{
				$this->session->set_flashdata('alert', 'anda belum mengisi username atau password salah.');
				$this->load->view('login');
				redirect(base_url());

		}
	}
}