Category: PHP

PHP: Hypertext Preprocessor is a server-side scripting language designed for Web development, but also used as a general-purpose programming language

PHP framework is a library that makes the life of site developer easier by for example hiding some complexities of HTTP protocol or by adding some useful functions. For example the Codeigniter implements so called MVC which makes developer to think a level higher than HTTP
PHP application framework are part and parcel of a programmer’s professional life. Not any framework will suffice. Each framework has its own advantages and disadvantages, so it is important to choose one that will best on your project requirement or suit you. in this article, we look at one codeigniter framework is best from other in particular scenario.
We will try to know what is CodeIgniter MVC Framework and what it is?
CodeIgniter is one of the oldest PHP frameworks available. Focused onRAD, CodeIgniter was released in 2006 and remains popular among developers. Let’s take a look at some its main features and benefits. latest version of codeigniter is 3.X, and upcoming codeigniter version is 4.X
What is MVC(Model-View-Controller)?

mvc
The Model-View-Controller (MVC) is an architectural pattern that separates an application into three main logical components: the model, the view, and the controller.

Model-Data Handler: It represents your data structure, usually interacting with the Database or like insertion, deletion all that part comes in this file
View-User Interface: It is used to represent your web project i.e to show the UI part normally it contains the HTML and CSS code.
Controller: The Controller in MVC architecture handles any incoming URL request. Controller is a class, derived from the base class System.Web.Mvc.Controller. Controller class contains public methods called Action methods. Controller and its action method handles incoming browser requests, retrieves necessary model data and returns appropriate responses.
Reasons why CodeIgniter is better than other PHP Frameworks 
⦁ No need to install : Believe it or not, really no need to install need to download codeigniter from the codeine official site and paste it to root directory and replace the folder name to your project name that’s it,
⦁ Configuration: Codeigniter MVC framework has very simple configuration, you just have to first install the framework as per your system configuration then at the time of programming open the config.php load the library, database, arrays all in that and save that’s it then. You don’t have to write the database name every time to use it. “Write once uses everywhere”.
⦁ Execution Time : The most important point which attracts every developer towards the PHP is its execution time php give the response too fast that till now no technology is in this world can give the execution so fast.
⦁ Database Abstractions or More: Every decent framework has a database abstraction layer nowadays and CI is no exception. You can easily create insert, update and delete statements without needing to write raw SQL. Handle connections to multiple databases within one application and connect to any of the following database types: MySQL (4.1+), MySQLi, MS SQL, Postgres, Oracle, SQLite, or ODBC. CI also lets you manipulate your database like add/remove columns from tables, create new tables and remove old ones using it’s new database forge library.
⦁ File Organization: When you first install the CodeIgniter framework at that time only it contains the many files application which contains the sub-folders as controller, config, model, view etc.This is the main folder which we have to deal to implement the project.
⦁ Error Handling: Handling errors in the web development had always been a big concern for the programmers as it eats lots of time. But, CodeIgniter has made error handling an easy job. By writing a code of one line, you can get all errors appear on your screen. This way, you can easily spot the errors in the quickest way and can fix it right there.
⦁ CI Online Community: Codeigniter has a very effective and active community where your questions has been replied within minutes. Its very active community I have ever experienced. With an active online forum, Codeigniter has also a Wiki page where you can download many great libraries and plugins developed by CI community. These plugins are free to download and use. With these useful plugins and classes.

Read More Why Codeigniter is the PHP Frameworks for Enterprise Web App Development.

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 MVC (Model-View-Controller)

Model-view-controller is a software architectural pattern, which divides a given application into three separate parts. It is basically build to avoid mixing code from the three categories into one class. MVC is one of the most frequently used industry-standard web development framework to create scalable and extensible projects.

In a typical application you will find these three fundamental parts:

  • Data (Model)
  • An interface to view and modify the data (View)
  • Operations that can be performed on the data (Controller)

Architecture of MVC:

MVC

Components of MVC:

Following are the components of MVC:

   1.Model: Model is responsible for managing the data of the application, such as the data, logic and the rules of the application. The model does NOT depend on the controller or the view. It responds to the request from the view and it also responds to instructions from the controller to update itself.

Model classes can either be created manually or generated from database entities. It is the model that responds to requests coming from the view regarding its status or state. In this way, the processing of data takes place only in the model, which ensures internal data consistency.

    2.View: View displays data or the database records. A view requests information from the model, which it needs to generate an output representation. MVC is often seen in web applications, where the view is the HTML page. However it can also be defined to give other view results such as JSON strings and JavaScript code.

The view is also used to present the graphical visualization of the user interface. It could filter out some aspects of the model or highlight others. It represents the input and output data in an interface using various elements such as pushbuttons, menus, dialog boxes, etc. To see the status of the application objects, the view queries the model through the controller.

   3.Controller: The controller is responsible for all the interactions between the model and view. It also responsible for dispatching requests and controlling application flow.

The controller uses the model methods to retrieve information about the application object, to change the status of the object and to inform the view about this change. In a sense the controller enables a user to make changes and see results

 

Advantages of MVC:

  1. Faster Development Process:

MVC supports rapid and parallel development. If an MVC model is used to develop any particular web application then it is possible that one programmer can work on the view while another can work on the controller to create business logic of the web application. Hence this way, the application developed using MVC model can be completed three times faster than applications that are developed using other development pattern.

  1. Ability to provide multiple views:

In the MVC Model, you can create multiple views for a model. Today, there is an increasing demand for new ways to access your application and for that MVC development is certainly a great solution. Moreover, in this method, Code duplication is very limited because it separates data and business logic from the display

  1. Modification does not affect the entire model:

For any web application, user interface tends to change more frequently than even the business rules of the company. It is obvious that you make frequent changes in your web application like changing colors, fonts, screen layouts, and adding new device support for mobile phones or tablets. Moreover, adding new type of views are very easy in MVC pattern because the Model part does not depend on the views part. Therefore, any changes in the Model will not affect the entire architecture.

  1. SEO friendly Development platform:

MVC platform supports development of SEO friendly web pages or web applications. Using this platform, it is very easy to develop SEO-friendly URLs to generate more visits from a specific application. This development architecture is commonly used in the Test Driven Development applications. Moreover, Scripting languages like JavaScript and jQuery can be integrated with MVC to develop feature rich web applications.

Disadvantages of MVC:

  1. The framework navigation can be complex because it introduces new layers of abstraction and requires users to adapt to the decomposition criteria of MVC.
  2. Knowledge on multiple technologies becomes the norm. Developers using MVC need to be skilled in multiple technologies.
  3. MVC needs multiple programmers.

 

Conclusion:

Thus, MVC design pattern is a surely the great approach to building software applications. The MVC framework is easy to implement as it offers above given numerous advantages. Projects that are developed with the help of MVC model can be easily developed with lesser expenditure and within less time too. Above all, its power to manage multiple views makes MVC the best architecture pattern for developing web applications.

 

 

Read More Beginners Guide: MVC (Model-View-Controller)

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The Model-View-Controller (MVC) is an architectural design pattern that seperates an application in three components : first is Model, second is View, third is Controller.

Here is the flow-diagram of MVC :-

 

MVC-basic.svg

 

Diagram shows the single flow layout of data, how it is passed between each components, and show the relationship between each component works.

Model

The Model component corresponds to all the data-related logic that the user works with.The Model is the name given to the permanent storage of the data used in the overall design.

Model represents shape of the data and business logic. It maintains the data of the application. Model objects retrieve and store model state in a database.

One important aspect of the Model is that it’s technically “blind” – that means the model has no connection or knowledge of what happens to the data when it is passed to the View or Controller components.

Model is a data and business logic.

View

View display data using model to the user and also enables them to modify the data.

The View component is used for all the UI logic of the application

The View is where data, requested from the Model, is viewed and its final output is determined.

In web apps built using MVC, the View is the part of the system where the HTML is generated and displayed.

View is a user interface.

Controller

Controller act as an interface between Model and view components to precess all the incoming requests.

It handles the users request.User interact with View, which in-tern raises appropriate URL request, this request will be handled by a controller.

Controller is a request handler.

Read More What is MVC ?

PHP Web Development

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