McGansWebsite/admin/application/controllers/Welcome.php

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

class Welcome extends CI_Controller {
	
	public function __construct()
	{
		parent::__construct();
		$this->load->model('Common_model');
		$this->load->model('Commonsql_model');
		$this->load->model('Project_model');
	}

	public function index()
	{
		$this->load->view('login');
	}
	
	public function dashboard()
	{
		
		$data['project']=$this->Project_model->totalProjects();
		$data['student']=$this->Project_model->totalStudents();
		$data['subject']=$this->Project_model->totalSubject();
		$data['faculty']=$this->Project_model->totalFaculties();
		$data['projectList']=$this->Project_model->recentlyAddedProject();
		$this->load->view('dashboard',$data);
	}
	
	public function login()
	{
	//echo "dsds";exit;
		$username=$this->input->post('username');
		$password=$this->input->post('password');
	 
		$check=$this->Common_model->get_login_detail($username,$password);
		//echo $this->db->last_query();exit;
		if($check->num_rows()>0)
		{
		$ch=$check->row();
		$this->session->set_userdata('username',$ch->username);
		$this->session->set_userdata('role',$ch->roleId);
		$this->session->set_userdata('id',$ch->id);
		$this->session->set_userdata('suc',' Successfully Logged in..!');
		redirect('dashboard');
		
		}
		else
		{
		$this->session->set_userdata('err','The username or password is incorrect.');
		redirect('');
		}
		
	}
	public function logout()
	{
		$admin_id=$this->session->userdata('id');
		
        $data = array('id' => '', 'username' => '');
        $this->session->unset_userdata($data);
        $this->session->sess_destroy();
		redirect('');
	}
	public function getOldPassword()
	{
		$id=$_POST['employeeId'];
		$oldpassword=$_POST['oldPassword'];
		$currentPassword=md5($oldpassword);
		
		$password=$this->Project_model->getOldPassword($id);
		if(isset($password) && $password->num_rows()>0)
		{
			 $li=$password->row();
			 $dbpassword=$li->password;
		}
		if($currentPassword==$dbpassword)
		{
			echo "true";
		}else
		{
			echo "false";
		}
		
	}
	public function changePassword()
	{
		if($this->session->userdata('id')==""){redirect('');}
		$currentUser=$this->session->userdata('id');
		
		if($this->input->post('submit'))
		{
			
			$newpassword=$this->input->post('newpassword');
			$employeeId=$this->input->post('employeeId');
			
			$table="employee";
			$where=array("id"=>$employeeId);
			$values=array('password'=>md5($newpassword),
			              'updatedBy'=>$currentUser);
						 
			$result=$this->Commonsql_model->updateTable($table,$where,$values);
			if($result)
			{
				$this->session->set_userdata('suc','successfully Updated');
				redirect('change-password');
			}
			else
			{
				$this->session->set_userdata('err','Please try again');
				redirect('change-password');
			}
			
		}
		$this->load->view('changepassword');
	}
}