Symfony组件

cd /path/to/project/dir
composer require symfony/<component_name>

cd /path/to/dev/folder
mdkir filesystem-example
cd filesystem-example

composer require symfony/filesystem

<?php
   require_once __DIR__ . '/vendor/autoload.php';
   use Symfony\Component\Filesystem\Filesystem;
   use Symfony\Component\Filesystem\Exception\IOExceptionInterface;

   $fs = new Filesystem();
   try {
      $fs->mkdir('./sample-dir');
      $fs->touch('./sample-dir/text.txt');
   } catch (IOExceptionInterface $e) {
      echo $e;
   }
?>

php main.php

composer require symfony/filesystem

composer require symfony/finder

composer require symfony/console

cd /path/to/project
composer require symfony/console

<?php
   require __DIR__ . '/vendor/autoload.php';
   use Symfony\Component\Console\Application;

   $app = new Application();
   $app->run();
?>

Console Tool  
Usage:
   command [options] [arguments]  
Options:
   -h, --help            Display this help message
   -q, --quiet           Do not output any message
   -V, --version         Display this application version
         --ansi            Force ANSI output
         --no-ansi         Disable ANSI output
   -n, --no-interaction  Do not ask any interactive question
   -v|vv|vvv, --verbose  Increase the verbosity of messages: 1 for normal output,
      2 for more verbose output and 3 for debug  
Available commands:
   help  Displays help for a command
   list  Lists commands

use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Input\InputArgument;

class HelloCommand extends Command {
}

protected function configure() {
   $this
      ->setName('app:hello')
      ->setDescription('Sample command, hello')
      ->setHelp('This command is a sample command')
}

protected function configure() {
   $this
      ->setName('app:hello')
      ->setDescription('Sample command, hello')
      ->setHelp('This command is a sample command')
      ->addArgument('name', InputArgument::REQUIRED, 'name of the user');
}

protected  function execute(InputInterface $input, OutputInterface $output) {
}

protected function execute(InputInterface $input, OutputInterface $output) {
   $name = $input->getArgument('name');
   $output->writeln('Hello, ' . $name);
}

$app->add(new HelloCommand());

<?php
   require __DIR__ . '/vendor/autoload.php';
   use Symfony\Component\Console\Application;
   use Symfony\Component\Console\Command\Command;
   use Symfony\Component\Console\Input\InputInterface;
   use Symfony\Component\Console\Output\OutputInterface;
   use Symfony\Component\Console\Input\InputArgument;  

   class HelloCommand extends Command {
      protected function configure() {
         $this
            ->setName('app:hello')
            ->setDescription('Sample command, hello')
            ->setHelp('This command is a sample command')
            ->addArgument('name', InputArgument::REQUIRED, 'name of the user');
      }  
      protected function execute(InputInterface $input, OutputInterface $output) {
         $name = $input->getArgument('name');
         $output->writeln('Hello, ' . $name);
      }  
      $app = new Application();
      $app->add(new HelloCommand());
      $app->run();
   }         
?>

php main.php app:hello Jon

composer require symfony/process

composer require symfony/class-loader

$product = array(
   'name' => 'Cake'
   'price' => 10
);  
var priceObj = $propertyAccesserObj->getValue($product, '[price]');

composer require symfony/property-access

class Product {
   private $name = 'Cake';
   private $price = 10;  

   public function getName() {
      return $this->name;
   }  
   public function getPrice() {
      return $this->price;
   }
}  
$class = Product::class;
$properties = $propertyInfoObj->getProperties($class);  
/*
   Example Result
   --------------
   array(2) {
      [0] => string(4) "name"
      [1] => string(5) "price"
   }
*/

composer require symfony/property-info

composer require symfony/event-dispatcher

composer require symfony/dependency-injection

composer require symfony/serializer

composer require symfony/config

composer require symfony/expression-language

$options = array(
   'host'     => '<db_host>',
   'username' => '<db_user>',
   'password' => '<db_password>',
);  
$resolver = new OptionsResolver();
$resolver->setDefaults(array(
   'host'     => '<default_db_host>',
   'username' => '<default_db_user>',
   'password' => '<default_db_password>',
));
$resolved_options = $resolver->resolve($options);

composer require symfony/options-resolver

composer require symfony/dotenv

composer require symfony/cache

composer require symfony/intl

composer require symfony/translation

composer require symfony/workflow

composer require symfony/yaml

composer require symfony/ldap

composer require symfony/debug

use Symfony\Component\Stopwatch\Stopwatch;
$stopwatch = new Stopwatch();
$stopwatch->start('somename');  

// our code to profile
$profiled_data = $stopwatch->stop('somename');  
echo $profiled_data->getPeriods()

composer require symfony/stopwatch

composer require symfony/var-dumper

composer require symfony/browser-kit

composer require symfony/phpunit-bridge

composer require symfony/asset

composer require symfony/css-selector

composer require symfony/dom-crawler

composer require symfony/form

composer require symfony/http-foundation

composer require symfony/http-kernel

composer require symfony/filesystem

composer require symfony/templating

composer require symfony/validator

composer require symfony/security