How to implement command line application in Cilex framework?

The Cilex framework is a PHP framework based on the Symfony Console component, which provides a fast, simple and maintainable way to develop command line applications. In this article, we will learn how to implement command line applications in Cilex framework.

1. Install Cilex framework

First, we need to install Cilex framework. Using Composer is a convenient and quick way. Open a terminal and enter the following command:

composer require cilex/cilex

This command will download the Cilex framework and all its dependencies. Once completed, the following content will be added to the composer.json file:

{
    "require": {
        "cilex/cilex": "^2.0"
    }
}

Next, we need to install these dependencies using Composer. In the terminal, enter the following command:

composer install

Once completed, we can start creating our command line application.

2. Create command line applications

In Cilex, we can use command line tools to create projects and commands. Command line tools are executable files that pass command line arguments to Cilex applications.

To create a command line tool, enter the following command in the terminal:

vendor/bin/cilex init

This will create an executable file named "cilex" in the current directory and add the file in composer.json Add the following content to the file:

{
    "scripts": {
        "cilex": "php cilex",
        "post-install-cmd": [
            "@cilex init"
        ],
        "post-update-cmd": [
            "@cilex init"
        ]
    }
}

Next, modify the permissions on the executable to allow it to run:

chmod +x cilex

Once completed, we can start defining our commands.

3. Define commands

In Cilex, we can use the Command namespace class to define commands. The Command class is a subclass of the Symfony Console component and contains all the logic for defining commands.

To create a new command, create a new PHP file in the src directory, for example:

src/HelloCommand.php

Then define your command in this file, for example:

<?php

namespace Example;

use SymfonyComponentConsoleCommandCommand;
use SymfonyComponentConsoleInputInputInterface;
use SymfonyComponentConsoleOutputOutputInterface;

class HelloCommand extends Command
{
    protected function configure()
    {
        $this
            ->setName('hello')
            ->setDescription('Say hello');
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $output->writeln('Hello, world!');
    }
}

In the above example, we created a command named "hello" and defined its description. In the execute() method, we output a simple greeting.

4. Register Command

Now we need to register our command into the Cilex application. To achieve this, create a new PHP file in the src directory, for example:

src/main.php

Then register our command in this file:

<?php

require_once __DIR__.'/../vendor/autoload.php';

use ExampleHelloCommand;
use CilexApplication;

$app = new Application('MyApp');
$app->command(new HelloCommand());

$app->run();

In the above example, we Created a new Cilex application and registered the HelloCommand command we just created.

5. Use the command line application

After completing the above steps, we can use the command line tool to run our commands. In the terminal, enter the following command:

./cilex hello

Execute the above command, the output will be "Hello, world!".

So far, we have successfully implemented the command line application in the Cilex framework.

6. Summary

In this article, we learned how to implement command line applications in the Cilex framework. We first installed the Cilex framework, then created a command line tool and defined a HelloCommand command. Finally, we register the command into the Cilex application and use the command line tool to run the command.

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