symfony/console 的接入和使用

基本

#创建目录 test-project
mkdir test-project

cd test-project

#composer 初始化，然后回车回车就行了
composer init

#创建app 目录
mkdir app

#然后在composer.json里的加入
"autoload": {
    "psr-4": {
       "App\\" : "./app"
     }
}

#自动加载
composer dump-autoload

安装

composer require symfony/finder
composer require symfony/console

//console 文件
#!/usr/bin/env php
<?php

require_once 'vendor/autoload.php';

use App\Src\CommandLoader;

! defined('ROOT_PATH') && define('ROOT_PATH', __DIR__);
! defined('APP_PATH') && define('APP_PATH', ROOT_PATH."/app");

/**
 * @var $application \Symfony\Component\Console\Application
 */
$application = (new CommandLoader())->application();
$application->run();

//app\Src\CommandLoader.php
<?php
namespace App\Src;


use Symfony\Component\Console\Application;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Finder\Finder;
use Symfony\Component\Finder\SplFileInfo;
use Symfony\Contracts\Service\ResetInterface;


class CommandLoader
{
    protected string $path = APP_PATH.'/Command';
    protected string $namespace = "\\App\\Command\\";
    protected Application $application;
    //默认有的
    protected $default = [

    ];

    public function __construct()
    {

        $this->application = new Application();
        $this->load();
		$this->loadDefault();
    }

	protected function loadDefault()
	{
		foreach($this->default as $class)
		{
			$this->application->add(new $class);
		}
	}

    /**
     * 遍历 加载 command 目录下的类
     */
    protected function load()
    {
        $finder = new Finder();
        $finder->files()
               ->in($this->path)
               ->name('*.php');
        foreach ($finder as $file)
        {
            $className = $this->getClassName($file);

            $reflectionClass = new \ReflectionClass($className);
            if ($reflectionClass->isAbstract())
            {
                //echo "$className 是抽象类不加载\n";
                continue;
            }//end if isAbs

            /**
             * @var $instance Command
             */
            $instance = $reflectionClass->newInstance();

            if (! $instance instanceof Command)
            {
                //echo "$className 不继承 Command 不加载\n";
                continue;
            }//end if instanceof

            $this->application->add($instance);
        }//end foreach finder
    }//end init()

    /**
     * @return Application
     */
    public function application():Application
    {
        return $this->application;
    }//end loader

    /**获取命名空间+类名的形式
     * @param SplFileInfo $file
     * @return string 类名 \App\Command\Xxx
     */
    protected function getClassName(SplFileInfo $file):string
    {
        if ($file->getRelativePath() != '')
        {
            $className = $this->namespace.$file->getRelativePath()."\\".$file->getFilenameWithoutExtension();
        }else
        {
            $className = $this->namespace.$file->getFilenameWithoutExtension();
        }
        return $className;
    }
}

//app\Command\BaseCommand.php

<?php


namespace App\Command;

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

//如果有公共方法就写在这里

abstract class BaseCommand extends Command
{
    protected OutputInterface $output;
    protected InputInterface $input;

    protected function initialize(InputInterface $input, OutputInterface $output)
    {
        parent::initialize($input, $output); // TODO: Change the autogenerated stub

        $this->output = $output;
        $this->input = $input;
    }

    //监听信号
    public function listenForSignals($callback = null)
    {
        if ($callback == null)
        {
            $callback = [$this, 'sigalHandler'];
        }

        //绑定QUIT信号
        pcntl_signal(SIGQUIT, $callback);
        pcntl_signal(SIGTERM, $callback);
        pcntl_signal(SIGHUP, $callback);
        pcntl_signal(SIGINT, $callback);
    }

    //信号处理函数
    protected function sigalHandler($signo)
    {
        $this->output->writeln([
            "",
            "----------------",
            "收到信号:{$signo}",
            "----------------",
        ]);
        exit;

//        switch ($signo) {
//            case SIGTERM:
//            case SIGHUP:
//            case SIGINT:
//            case SIGQUIT:
//                $this->loop = false;
//                echo "信号:{$signo}\n";
//                break;
//            default:
//                // 处理所有其他信号
//        }
    }

}

//创建测试的  app\Command\Test.php
<?php
namespace App\Command;

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

class Test extends BaseCommand
{
    protected function configure()
    {
        $this->setName('test')->setDescription('测试');
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $this->output->writeln([
            'HI',
            'HI',
        ]);
        return 1;
    }
}

//执行
php console test