PHP code example of pwm / treegami

1. Go to this page and download the library: Download pwm/treegami 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/ */

pwm / treegami example snippets


$tree = new Tree(
    'first', [ // node has 3 children
        new Tree('second', [ // node has 2 children
            new Tree('third'),  // children are optional and defaults to []
            new Tree(), // node value is optional and defaults to null
        ]),
        new Tree('fourth', []), // explicitly saying no children
        new Tree('fifth', [
            new Tree(null, []) // explicitly saying no node value or children
        ]),
    ]
);


$mappedTree = $tree->map(function (?string $node): int {
    return is_string($node)
        ? strlen($node)
        : 0;
});


$foldedTree = $mappedTree->fold(function (int $node, array $acc): int {
    return $node + array_sum($acc);
});

assert($foldedTree === 27); // true


$tree = Tree::unfold(function (int $x): array {
    return $x < 2 ** 3
        ? [$x, range(2 * $x, 2 * $x + 1)]
        : [$x, []];
}, 1);