PHP code example of thrashzone13 / visitor

1. Go to this page and download the library: Download thrashzone13/visitor 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/ */

thrashzone13 / visitor example snippets

 php
$visitor = (new Visitor)
    ->add(fn(Circle $circle) => pi() * $circle->getRadius() * $circle->getRadius())
    ->add(fn(Square $square) => $square->getSide() * $square->getSide())
    ->add(fn(Rectangle $rectangle) => $rectangle->getWidth() * $rectangle->getHeight());

 php
$totalArea = 0;
foreach ($shapes as $shape) {
    $totalArea += $visitor->visit($shape);
}