CodeIgniter 2.1.3 -Hello World
===============================
    
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## Phase 1
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### application/controllers/messages.php
    <?php
    
    class Messages extends CI_Controller {
    
        function index()
        {
                echo "Hello world (from controller).";
        }
    
    }
    
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## Phase 2
********************************************************************************
### application/controllers/messages.php
    <?php
    
    class Messages extends CI_Controller {
    
        function index()
        {
                $data ['msg'] = "Hello world ";
                $this->load->view('show', $data);
        }
    
    }
    
********************************************************************************
### application/views/show.php
    <?php
    
    echo $msg;
    echo "(from view).";
    
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## Phase 3
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### MySQL
    
    CREATE DATABASE msg;
    
    CREATE TABLE `messages` (
        `id`            int(11) NOT NULL AUTO_INCREMENT,
        `body`          text NOT NULL,
        PRIMARY KEY (`id`)
    );
    
    INSERT INTO `messages` (`id`, `body`) VALUES
    (1, 'Hello world !!! (from model)');
    
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### application/config/autoload.php 
    
    .
    .
    $autoload['libraries'] = array('database');
    .
    .
    
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### application/config/database.php
    
    .
    .
    $db['default']['hostname'] = 'localhost';
    $db['default']['username'] = 'root';
    $db['default']['password'] = '123456';
    $db['default']['database'] = 'msg';
    $db['default']['dbdriver'] = 'mysql';
    .
    .
    
********************************************************************************
### application/models/message.php 
    <?php
    
    class Message extends CI_Model {
        
        function get_msg()
        {
                $this->db->select();
                $this->db->from('messages');
                $query = $this->db->get();
                return $query->result_array();
        }
        
    }
    
********************************************************************************
### application/controllers/messages.php 
    <?php
    
    class Messages extends CI_Controller {
    
        function index()
        {
                $this->load->model('message');
                $data ['msgs'] = $this->message->get_msg();
                $this->load->view('show', $data);
        }
    
    }
    
********************************************************************************
### application/views/show.php 
    <?php
    
    foreach ($msgs as $msg)
        echo $msg['body'];
    
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_BY: Pejman Moghadam_  
_TAG: php, codeigniter_  
_DATE: 2013-01-27 19:36:53_