PHP code example of ulrack / fallback

1. Go to this page and download the library: Download ulrack/fallback 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/ */

ulrack / fallback example snippets




use Ulrack\Fallback\Component\Fallback;
use Ulrack\Validator\Component\Logical\ConstValidator;

$class = new class {
    /**
     * Returns the input.
     *
     * @param string $input
     *
     * @return string
     */
    public function foo(string $input): string
    {
        return $input;
    }
};

$validator = new ConstValidator('bar');

$fallback = new Fallback([$class, 'foo'], $validator);




use Ulrack\Fallback\Component\FallbackStack;
use Ulrack\Validator\Component\Type\StringValidator;

$validator = new StringValidator();

$fallbackStack = new FallbackStack($validator);

$fallbackStack->addFallback($fallback, 0);

$fallbackStack('bar');