3v4l.org

run code in 300+ PHP versions simultaneously

@ 2020-08-28T13:16:22Z

<?php
$arr = array(
    array(
        'id' => 1,
        'parent_id' => 0,
        'title' => 'Parent Page',
        'children' => array(
            array(
                'id' => 2,
                'parent_id' => 1,
                'title' => 'Sub Page',
            ),
            array(
                'id' => 5,
                'parent_id' => 1,
                'title' => 'Sub Page 2',
                'children' => array(
                    array(
                        'id' => 7,
                        'parent_id' => 5,
                        'title' => 'Sub Page',
                    ),
                    array(
                        'id' => 8,
                        'parent_id' => 5,
                        'title' => 'Sub Page 2',
                    )
                )
            )
        )
    ),
    array(
        'id' => 4,
        'parent_id' => 0,
        'title' => 'Another Parent Page',
    )
);
function printAll($arr, $parent = [])
{
    if (is_array($arr)) {
        foreach ($arr as $k => $v) {
            if (isset($v['id'])) {
                $parent[] = $v['id'];
                echo implode('.', $parent) . PHP_EOL;
            }
            if (isset($v['children'])) {
                printAll($v['children'], $parent);
            }
            array_pop($parent);
        }
    }
}
printAll($arr);

Output for git.master, git.master_jit, rfc.property-hooks: 1 1.2 1.5 1.5.7 1.5.8 4

This tab shows result from various feature-branches currently under review by the php developers. Contact me to have additional branches featured.

Active branches

Archived branches

Once feature-branches are merged or declined, they are no longer available. Their functionality (when merged) can be viewed from the main output page

2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

preferences:dark modelive preview

24 ms | 405 KiB | 5 Q