Before i start this tutorial, first let's find out what is that codeigniter.
CodeIgniter is an open source application in the form of PHP framework with MVC model (Model, View, Controller) to build dynamic website using PHP. CodeIgniter makes it easy for developers to create web apps quickly and easy compared to making them from scratch. CodeIgniter was first released on February 28, 2006. The last stable version is version 3.0.4.
What is that Framework?
Frameworks can simply be defined as a collection of functions / procedures and classes for a particular purpose that is ready to be used so that it can simplify and speed up the work of a programmer, without having to create a function or class from scratch.
And what is that MVC (Model, View, Controller)?
Model
Model, usually directly related to the database to manipulate data (insert, update, delete, search), handle validation from the controller section, but can not be directly related to the view.
View
View, is the part that handles presentation logic. In a web application this section is usually an HTML template file, which is controlled by the controller. View functions to receive and represent data to the user. This section does not have direct access to the model section.
Controller
Controller, is the part that manage the relationship between the model part and the view, the controller functions to receive requests and data from the user and then determine what will be processed by the application.
Oke ... Lets see this image represent what is that Model, View, And Controller
First your need to download codeigniter from codeigniter official website https://codeigniter.com
and download it...
after that put it into your htdocs folder and you will see two main folder and one main file just we need ... oke what is that ?
after that lets type localhost/website at your browser search bar, and you will see like this
thats mean you have been successfully install codeigniter on your computer
In general, the arrangement of the url on CodeIgniter is:
localhost/website/index.php/[controller-class]/[controller-method]/[arguments]
So, before we just call Controller-Class only. While Controller-method and Arguments we have not used.
Now we will create a new method in the Wellcome Controller. Open the Welcome.php file in application / controllers / Welcome.php folder. Then add the myapp method, like the following.
If we want to run it, we have to access url: localhost /website/index.php /wellcome/myapp. The result will look like the following.
To add a parameter, we only need to edit a few of the methods we have been created before:
If we want to run it, we have to access url: localhost /website/index.php /wellcome/myapp/myparameter. The result will look like the following.
but we should do it by displaying the result is not inside the controller file, we display it on the view page ...
to display on the view page we will only add a bit to our myapp method like this
and we need to create some file in view folder i caled myapp.php
Copy this code into that file
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>This is Myapp view</title>
</head>
<body>
the result from controller wil be here:
<?php echo $content; $param; ?>
</body>
</html>
If we want to run it, we have to access url: http://localhost/website/index.php/welcome/myapp/myparameter like before we have been accesse
but in this case the result will be run on the view page we have created before
if we also want to add a model on our application we just need to edit a little more on our controller and send it to the view as we did before...
open welcome contorller again and edit the code like this
oke... lets create some file in model folder i callded mymodel.php
and copy this code into mymodel.php file
class Mymodel extends CI_Model {
public function datamodel()
{
echo 'this data form mymodel file';
}
}
and lets edit our myapp.php file in view folder to display data from model like this
If we want to run it, we have to access url: http://localhost/website/index.php/welcome/myapp/myparameter like before we have been accesse but in this case the result will be run on the view page and will be desplay data from model file too
oke ... we are have been successfully created some website using codeigniter framework ...
