23. CodeIgniter sessions
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This document shows how to use sessions in CodeIgniter 3. It defines a SessionController with methods to set, get, and delete session data. It configures the session library and routes. Views are used to display links to call the SessionController methods and interact with the session data.
![config/routes.php
$route['default_controller'] = 'SessionController';
$route['404_override'] = '';
$route['translate_uri_dashes'] = FALSE;](https://image.slidesharecdn.com/23-190422102701/85/23-CodeIgniter-sessions-2-320.jpg)
![config/autoload.php
$autoload['libraries'] = array('session');
$autoload['helper'] = array('url','html');](https://image.slidesharecdn.com/23-190422102701/85/23-CodeIgniter-sessions-3-320.jpg)
23. CodeIgniter sessions
- 2. config/routes.php $route['default_controller'] = 'SessionController'; $route['404_override'] = ''; $route['translate_uri_dashes'] = FALSE;
- 3. config/autoload.php $autoload['libraries'] = array('session'); $autoload['helper'] = array('url','html');
- 4. SessionController <?php defined('BASEPATH') OR exit('No direct script access allowed'); class SessionController extends CI_Controller { public function index() { $this->load->view('main_view'); }
- 5. public function view() { //print value from the key univ $session_data = $this->session->userdata('univ'); //print data for the key colors $session_data = $this->session->userdata('colors'); //echo $session_data; print_r($this->session->userdata()); //print all session data from the array colors if($this->session->userdata('colors')){ $data=$this->session->userdata('colors'); foreach ( $data as $key=>$var ) { print "<br/>$key = = > $var<br/>"; } }else echo 'No data in the session'; }
- 6. public function set() { // $this->load->library('session'); $colors = array( 'color1' => 'red', 'color2' => 'yellow', 'color3' => 'blue' ); //add a variable to session $this->session->set_userdata('univ','"Al. I. Cuza"'); //add an array to session $this->session->set_userdata('colors',$colors); echo "Data has been added to session"; }
- 7. public function delete() { //delete all session data $this->session->sess_destroy(); //delete values for key univ //$this->session->unset_userdata('univ'); //delete values for key color1 //$this->session->unset_userdata('color1'); echo "Data has been removed from session."; } }
- 8. views/main_view.php <a href="<?php echo site_url('SessionController/view') ?>">View Session data</a><br/><br/> <a href="<?php echo site_url('SessionController/set') ?>">Set Session data</a><br/><br/> <a href="<?php echo site_url('SessionController/delete') ?>">Delete Session data</a><br/><br/>