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Create a site using CodeIgniter framework

CodeIgniter is a powerful PHP framework that enables developers to create dynamic web applications quickly and easily. In this tutorial, we will go through the steps required to create a basic website using the CodeIgniter framework.

Prerequisites

Before you begin, make sure you have the following installed on your machine:

  • PHP 5.6 or higher
  • MySQL 5.1 or higher (or another database of your choice)

Syntax

CodeIgniter follows the Model-View-Controller (MVC) architecture pattern. The syntax for creating a site using CodeIgniter is as follows:

  1. Define a controller in the app/controllers directory.
  2. Define a view in the app/views directory.
  3. Define a model in the app/models directory.

Example

  1. Create a new controller file named Welcome.php in the app/controllers directory:
class Welcome extends CI_Controller {

    public function index() {
        $this->load->view('welcome_message');
    }

}
  1. Create a new view file named welcome_message.php in the app/views directory:
<html>
<head>
    <title>Welcome to my site</title>
</head>
<body>
    <h1>Welcome to my site!</h1>
    <p>This is my first CodeIgniter site.</p>
</body>
</html>
  1. Create a new model file named site_model.php in the app/models directory:
class Site_model extends CI_Model {

    public function get_title() {
        return "My Site";
    }

    public function get_description() {
        return "This is my first CodeIgniter site.";
    }

}
  1. Update the app/controllers/Welcome.php file to use the model:
class Welcome extends CI_Controller {

    public function index() {
        $this->load->model('site_model');
        $data['title'] = $this->site_model->get_title();
        $data['description'] = $this->site_model->get_description();
        $this->load->view('welcome_message', $data);
    }

}

Explanation

The above code defines a controller named Welcome, a view named welcome_message, and a model named Site_model. The controller loads the model, retrieves the site title and description from the model, and passes the data to the view. The view displays the site title and description.

Use

CodeIgniter provides a powerful framework for building dynamic web applications quickly and easily. By following the MVC pattern, developers can create well-organized, maintainable, and scalable applications.

Important Points

  • CodeIgniter follows the Model-View-Controller (MVC) architecture pattern.
  • Controllers, views, and models are defined in separate files in their respective directories.
  • CodeIgniter has a rich set of built-in features such as database access, form validation, and session management.

Summary

CodeIgniter is a powerful PHP framework that enables developers to create dynamic web applications quickly and easily. By following the MVC pattern and utilizing its built-in features, developers can create well-organized, maintainable, and scalable applications. Controllers, views, and models are defined in separate files in their respective directories. CodeIgniter provides a powerful framework for building dynamic web applications quickly and easily.

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