PHP code example of technically / null-container

1. Go to this page and download the library: Download technically/null-container library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php. 
    
        
<?php
require_once('vendor/autoload.php');

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

technically / null-container example snippets


use Psr\Container\ContainerInterface;
use Technically\NullContainer\NullContainer;

final class MyServiceContainer implements ContainerInterface
{
    private ContainerInterface $parent;

    /**
     * @param ContainerInterface|null $parent
     */
    public function __construct(ContainerInterface $parent = null)
    {
        $this->parent = $parent ?? new NullContainer();
    }

    // ... your code, where you don't need to deal with $parent set to `null`.
}