PHP code example of cee / simple-di

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

cee / simple-di example snippets

$container = new Cee\SimpleDi\Container();
$classInstance = $container->createServiceOnce('ClassName');

interface Logger {
  public function log($message);
}

interface Mailer {
  public function send($message, $subject, $to);
}

class NotificationService {
  private $mailer;
  private $logger;

  public function __construct(Mailer $mailer, Logger $logger) {
    $this->mailer = mailer;
    $this->logger = logger;
  }

  public function notify($message, array $recipients) {
    $subject = 'Notification';
    foreach ($recipients as $recipient) {
      $this->mailer->send($message, $subject, $recipient);
    }
    $this->logger->log(...);
  }
}

class ErrorLogLogger extends Logger {
  public function log($message) {
    error_log('Error: ' . $message);
  }
}

class SendMailMailer extends Mailer {
  public function send($message, $subject, $to) {
    mail($to, $subject, $message);
  }
}

$container = new Cee\SimpleDi\Container();

$container->setInterfaceImplementation(Logger::class, ErrorLogLogger::class);
$container->setInterfaceImplementation(Mailer::class, SendMailMailer::class);

$notificationService = $container->createServiceOnce(NotificationService::class);

class NotificationService {
  private $mailer;
  private $logFileName;

  public function __construct(Mailer $mailer, $logFileName) {
    $this->mailer = mailer;
    $this->logFileName = logFileName;
  }

  public function notify($message, array $recipients) {
    $subject = 'Notification';
    foreach ($recipients as $recipient) {
      $this->mailer->send($message, $subject, $recipient);
    }
    file_put_contents($logFileName, ...);
  }
}

namespace App;

class Container extends \Cee\SimpleDi\Container {
  public function __construct($logFileName) {
    $notificationService = new \NotificationService(new SendMailMailer(), $logFileName);
    $this->addServiceInstance($notificationService);
  }
}

$logFileName = 'log.txt';
$container = new App\Container($logFileName);
$notificationService = $container->createServiceOnce(NotificationService::class);

class NotificationService {
  private $mailer;
  private $logFileName;

  public function __construct(Mailer $mailer, LogFileName $logFileName) {
  ...

class Repository {
  public function __construct(MySqlConnector $mySqlConnector) {
  ...
}

class Container extends \Cee\SimpleDi\Container {
  public function __construct(MySqlConnector $mySqlConnector) {
    $this->addServiceInstance($mySqlConnector);
  }
}

$mySqlConnector = MySqlConnector::instance();
$container = new App\Container($mySqlConnector);
$repository = $container->createServiceOnce(Repository::class);