How to install and setup codeigniter framework
CodeIgniter is a powerful open-source PHP framework with a very small footprint, created by Rick Ellis in 2006.
I will present you a step-by-step instruction how to set up development environment from a codeigniter framework.In this tutorial I am using CodeIgniter 3.1.9.
1.) Download Codeigniter:
Download Codeigniter framework.
2.) Unzip the File:
Now Unzip the folder inside C:\xampp\htdocs. You can rename folder name like myapp .
3.) Initial testing:
Everything is ready so finally let’s launch the Codeigniter app.Now let’s move on to browser and type in URL http:\\localhost\myapp.You will get interface as showing in below.
4.) Database Configuration:
Let’s now setup the database located in myapp/application/config/database.php. Change the username,password and database name.
5.) Mysql database table:
Next,Create database table.In my case database name is myapp and the table name is tbl_user. You can create table by running below script.
[php] CREATE TABLE `tbl_user` ( `id` int(11) NOT NULL, `name` varchar(255) NOT NULL, `mobile` varchar(255) NOT NULL, `address` varchar(255) NOT NULL ) ENGINE=InnoDB DEFAULT CHARSET=latin1; ALTER TABLE `tbl_user` ADD PRIMARY KEY (`id`); ALTER TABLE `tbl_user` MODIFY `id` int(11) NOT NULL AUTO_INCREMENT; [/php]
6.) Creating View:
Next, create a view file in your myapp/application/views directory called registerview.php with this code.
registerview.php
[html]
<html>
<head>
<title>Register</title>
</head>
<body>
<style>
h3
{
font-family: Verdana;
font-size: 18pt;
font-style: normal;
font-weight: bold;
color:red;
text-align: center;
}
table{
font-family: Verdana;
color:black;
font-size: 12pt;
font-style: normal;
font-weight: bold;
text-align:left;
border-collapse: collapse;
}
</style>
<h3>Registration</h3>
<form name=”registerview” action=”<?php echo base_url(); ?>register” method=”post”>
<table align=”center” cellpadding = “5”>
<tr>
<td>Name</td>
<td><input type=”text” name=”name” maxlength=”50″/></td>
</tr>
<tr>
<td>Mobile</td>
<td><input type=”text” name=”mobile” maxlength=”10″/></td>
</tr>
<tr>
<td>Adress</td>
<td><input type=”text” name=”address” maxlength=”100″/></td>
</tr>
<tr>
<td colspan=”5″ align=”center”>
<input type=”submit” value=”Register”/></td>
</tr>
</table>
</form>
</body>
</html>
[/html]
7.) Creating Controller:
Next, create a controller in your myapp/application/controller directory called RegisterController.php with this code.Make sure first letter of controller’s name in Uppercase as like i mention below.
RegisterController.php
[php]
<?php
defined(‘BASEPATH’) OR exit(‘No direct script access allowed’);
class RegisterController extends CI_Controller {
public function index(){
$this->load->view(‘registerview’);
}
public function register(){
$this->load->model(‘registermodel’);
$data = array(
‘name’=>$this->input->post(‘name’),
‘mobile’=>$this->input->post(‘mobile’),
‘address’=>$this->input->post(‘address’)
);
$this->registermodel->save($data);
redirect(‘registercontroller’);
}
}
[/php]
8.) Creating Model:
Next, create a model in your myapp/application/model directory called RegisterModel.php with this code. Make sure first letter of model’s name in Uppercase as like i mention below.
RegisterModel.php
[php]
<?php
class RegisterModel extends CI_Model {
private $table_name = ‘tbl_user’;
public function __construct() {
$this->load->database();
}
public function save($data){
$return = $this->db->insert($this->table_name, $data);
return $this->db->insert_id();
}
}
?>
[/php]
9.) Next, load the library and helper in autoload.php file located in myapp/application/config/autoload.php.
[php] $autoload[‘libraries’] = array(‘database’); $autoload[‘helper’] = array(‘url’,’html’,’file’); [/php]
10.) Route Configuration:
Change the default controller in routes.php file located in myapp/application/config/routes.php.
[php] $route[‘default_controller’] = ‘registercontroller’; $route[‘register’] = ‘registercontroller/register’; $route[‘404_override’] = ”; $route[‘translate_uri_dashes’] = FALSE; [/php]
Now,move on to browser and type in URL http:\\localhost\myapp.You will get interface as showing in below.
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