How to use Phalcon3 framework in php?

In today's world of web development, frameworks are vital components. Using frameworks can help developers shorten development time, enhance code reusability and maintainability, and provide a certain level of security. Phalcon is one of the most popular PHP frameworks. It is designed as an efficient framework and aims to provide optimal performance, minimizing memory consumption and CPU load. In this article, we will learn how to use the Phalcon3 framework to develop high-performance web applications.

Install Phalcon3 Framework
The Phalcon3 framework has two versions to choose from: PHP extension and pure PHP. The PHP extension version performs better but requires the Phalcon extension to be installed on the server. If your server does not support installing extensions, you can choose the pure PHP version.

Install Phalcon3 extension:
Under Linux system, you can install the Phalcon extension through the following command:

Run command

cd /tmp/
git clone https ://github.com/phalcon/cphalcon.git
cd cphalcon/build/
sudo ./install

Add Phalcon extension to PHP extension

sudo vim /etc /php/7.0/mods-available/phalcon.ini

Add extension=phalcon.so

Enable Phalcon extension

sudo ln -s /etc/php/7.0/ mods-available/phalcon.ini /etc/php/7.0/cli/conf.d/30-phalcon.ini
sudo ln -s /etc/php/7.0/mods-available/phalcon.ini /etc/php /7.0/fpm/conf.d/30-phalcon.ini

After the installation is completed, restart the php-fpm service.

Pure PHP version:
Download the pure PHP version of Phalcon3 from Phalcon’s official website, and then unzip it into your project. In the PHP code file, use the following code to introduce Phalcon3:

use PhalconMvcMicro;
use PhalconHttpResponse;

// File path
$projectPath = __DIR__;

//Introduce Phalcon3
require_once $projectPath . '/path/to/Phalcon3/loader.php';

// Create Micro application
$app = new Micro();

Note: The Phalcon3 framework is developed based on PHP7 and cannot be used normally in lower versions of PHP.

Using Phalcon3 framework
The basic development principle is to develop Web applications through the MVC architecture pattern. In Phalcon3, you can use the MVC framework to develop Web programs.

Here is a simple example showing how to define routes and handlers in the Phalcon3 framework:

use PhalconMvcMicro;
use PhalconHttpResponse;

// File path
$projectPath = __DIR__;

// Introduce Phalcon3
require_once $projectPath . '/path/to/Phalcon3/loader.php';

// Create Micro application
$app = new Micro();

// Mount routes and handlers
$app->get(

'/hello/{name}',
function ($name) {
    $response = new Response();
    $response->setContent("Hello, " . $name . "!");
    return $response;
}

);

// Run the application
$app->handle();

In the above code, we create a route using Micro application and mount them to on the corresponding handler.

In Phalcon3, the MVC model mainly consists of the following three components:

Model: the core component of database operations.
View: Component for displaying data and user interaction.
Controller: The component responsible for receiving requests and processing requests.

Phalcon3 can also use ORM (Object-Relational Mapping) to map database tables through simple PHP classes. The core class of the ORM component is PhalconMvcModel.

ORM
ORM can help developers Instead of writing a large number of SQL statements, operate the database through simple and structured code.

The following is a simple example showing how to use ORM in Phalcon3:

// Define the game model
class Game extends PhalconMvcModel
{

public $id;
public $title;
public $description;

}

$game = new Game();
$game->title = 'Minecraft';
$game->description = 'This is a block-building game.';
$game->save();

In the above code, we define an ORM model named Game, and then create an ORM model named $game Game object and set the title and description. Then, we call the $game->save() method to save the data to the database.

Routing
In Phalcon3, routing is a very important component. Routing controls all URL matching logic for the application.

The following is a simple example showing how to define routing in Phalcon3:

// Introduce Phalcon3
use PhalconMvcMicro;

//Create Micro application
$app = new Micro();

//Mount routing and handlers
$app->get(

'/hello/{name}',
function ($name) {
    echo 'Hello, ' . $name . '!';
}

);

// Run the application
$app->handle();

In the above code, we define a route to match the URL of the /hello/{name} pattern, and attach it to a handler.

Conclusion
Phalcon3 is a very excellent PHP framework that provides a high-performance and low-overhead experience. This article explains how to use ORM, routing and applications in Phalcon3. Through this article, I hope you will have a better understanding of the use of the Phalcon3 framework.

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