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Quick Overview
Symfony Console is a powerful PHP component that allows developers to create command-line interfaces (CLI) with ease. It provides a set of tools to define commands, handle input/output, and create interactive console applications, making it an essential library for building robust CLI tools in PHP.
Pros
- Easy to use and intuitive API for creating complex CLI applications
- Extensive documentation and strong community support
- Highly customizable with features like input validation, progress bars, and tables
- Seamless integration with other Symfony components and frameworks
Cons
- Learning curve for developers new to Symfony ecosystem
- May be overkill for simple CLI scripts
- Dependency on other Symfony components might increase project size
Code Examples
- Creating a simple command:
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
class GreetCommand extends Command
{
protected function configure()
{
$this->setName('greet')
->setDescription('Greets someone');
}
protected function execute(InputInterface $input, OutputInterface $output)
{
$output->writeln('Hello, World!');
return Command::SUCCESS;
}
}
- Adding command arguments:
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
class GreetCommand extends Command
{
protected function configure()
{
$this->setName('greet')
->setDescription('Greets someone')
->addArgument('name', InputArgument::REQUIRED, 'Who do you want to greet?');
}
protected function execute(InputInterface $input, OutputInterface $output)
{
$name = $input->getArgument('name');
$output->writeln("Hello, {$name}!");
return Command::SUCCESS;
}
}
- Using a progress bar:
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Helper\ProgressBar;
class ProcessCommand extends Command
{
protected function configure()
{
$this->setName('process')
->setDescription('Process items with a progress bar');
}
protected function execute(InputInterface $input, OutputInterface $output)
{
$progressBar = new ProgressBar($output, 100);
$progressBar->start();
for ($i = 0; $i < 100; $i++) {
// ... do some work
usleep(50000);
$progressBar->advance();
}
$progressBar->finish();
return Command::SUCCESS;
}
}
Getting Started
To start using Symfony Console, follow these steps:
-
Install the library using Composer:
composer require symfony/console
-
Create a new PHP file (e.g.,
console.php
) and add the following code:#!/usr/bin/env php <?php require __DIR__.'/vendor/autoload.php'; use Symfony\Component\Console\Application; $application = new Application(); // Add your commands here // $application->add(new YourCommand()); $application->run();
-
Create your command classes and add them to the application.
-
Run your console application:
php console.php
Competitor Comparisons
🍃 In short, it's like Tailwind CSS, but for the PHP command-line applications.
Pros of Termwind
- Tailwind CSS-inspired syntax for easier styling of CLI output
- Lightweight and focused specifically on terminal output styling
- Simpler API for creating styled console output
Cons of Termwind
- Less comprehensive CLI application framework compared to Console
- Smaller community and ecosystem
- Limited to styling output, lacking advanced input handling features
Code Comparison
Termwind:
use function Termwind\{render};
render('<div class="px-1 bg-blue-600">Hello World!</div>');
Console:
use Symfony\Component\Console\Output\OutputInterface;
$output->writeln('<bg=blue;fg=white;options=bold> Hello World! </>');
Summary
Termwind offers a more intuitive, Tailwind-inspired approach to styling console output, making it easier for developers familiar with web styling. However, Console provides a more comprehensive framework for building full-featured CLI applications, including advanced input handling and command structuring. Termwind is ideal for projects focused on attractive console output, while Console is better suited for complex CLI tools requiring extensive functionality beyond just styling.
A Commander for modern Go CLI interactions
Pros of Cobra
- Written in Go, offering better performance and easier deployment for Go projects
- Supports nested subcommands and automatic help generation
- Provides built-in shell completion generation for various shells
Cons of Cobra
- Limited to Go projects, while Console is more versatile for PHP applications
- Less extensive documentation and community resources compared to Console
- Steeper learning curve for developers not familiar with Go
Code Comparison
Cobra:
var rootCmd = &cobra.Command{
Use: "app",
Short: "A brief description of your application",
Run: func(cmd *cobra.Command, args []string) {
// Your code here
},
}
Console:
$application = new Application();
$application->register('app')
->setDescription('A brief description of your application')
->setCode(function (InputInterface $input, OutputInterface $output) {
// Your code here
});
Both libraries offer similar functionality for creating command-line interfaces, but their syntax and approach differ due to the languages they're built for. Cobra uses a more struct-based approach typical of Go, while Console leverages PHP's object-oriented features and closures.
A simple, fast, and fun package for building command line apps in Go
Pros of cli
- Simpler API and easier to get started for Go developers
- Built-in support for subcommands and nested subcommands
- Better integration with Go's flag package
Cons of cli
- Less feature-rich compared to console
- Smaller community and ecosystem
- Limited internationalization support
Code Comparison
cli:
app := &cli.App{
Name: "greet",
Usage: "fight the loneliness!",
Action: func(c *cli.Context) error {
fmt.Println("Hello friend!")
return nil
},
}
console:
$application = new Application();
$application->register('greet')
->setDescription('Greet someone')
->setCode(function (InputInterface $input, OutputInterface $output) {
$output->writeln('Hello, friend!');
});
Both libraries provide a straightforward way to create CLI applications, but cli's approach is more idiomatic for Go developers. console offers a more structured and feature-rich API, which can be beneficial for complex applications but may feel more verbose for simple use cases.
cli is generally preferred for Go projects due to its native feel and simplicity, while console is a robust choice for PHP applications, especially those already using the Symfony framework. The choice between the two often depends on the project's language, complexity, and specific requirements.
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Console Component
The Console component eases the creation of beautiful and testable command line interfaces.
Sponsor
Help Symfony by sponsoring its development!
Resources
Credits
Resources/bin/hiddeninput.exe
is a third party binary provided within this
component. Find sources and license at https://github.com/Seldaek/hidden-input.
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