PHP code example of iwink / tree

1. Go to this page and download the library: Download iwink/tree 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/ */

iwink / tree example snippets




use Iwink\Tree\Node\Node;
use Iwink\Tree\Tree;
use Iwink\Tree\Visitor\ValueVisitor;

$nodes = [];
foreach (range('A', 'I') as $value) {
	$nodes[$value] = new Node($value);
}

$nodes['D']->addChild($nodes['C'], $nodes['E']);
$nodes['H']->addChild($nodes['G'], $nodes['I'], $nodes['J']);
$nodes['B']->addChild($nodes['A'], $nodes['D']);
$nodes['F']->addChild($nodes['B'], $nodes['H']);

$tree = new Tree($nodes['F']);


// See code block above

$visitor = new ValueVisitor('strtolower'); // Convert the node's value to lowercase

$tree->visitPreOrder($visitor);
var_dump(iterator_to_array($visitor->getResult())); // ['f', 'b', 'a', 'd', 'c', 'e', 'h', 'g', 'i', 'j']

$tree->visitInOrder($visitor);
var_dump(iterator_to_array($visitor->getResult())); // ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i' 'j']

$tree->visitPostOrder($visitor);
var_dump(iterator_to_array($visitor->getResult())); // ['a', 'c', 'e', 'd', 'b', 'g', 'i', 'j', 'h', 'f']

$tree->visitLevelOrder($visitor);
var_dump(iterator_to_array($visitor->getResult())); // ['f', 'b', 'h', 'a', 'd', 'g', 'i', 'j', 'c', 'e']