Online PHP editor | output for K2BBh

@ 2019-09-17T10:59:05Z

<?php

$pages = array();
$pages[1] = array('id' => 1, 'parent' => 0, 'name' => 'Hello World');
$pages[2] = array('id' => 1, 'parent' => 1, 'name' => 'Child of Hello World');
$pages[3] = array('id' => 1, 'parent' => 0, 'name' => 'Brother of Hello World');
$pages[4] = array('id' => 4, 'parent' => 2, 'name' => 'Grand-child of Hello World');
$pages[6] = array('id' => 6, 'parent' => 4, 'name' => 'Great-grand-child of Hello World');

$children = array();
foreach($pages as $key => $page){
    $parent = (int)$page['parent'];
    if(!isset($children[$parent])){
        
        $children[$parent] = array();
    $children[$parent][$key] = array('id' => $page['id'], 'name' => $page['name']);
    }
}

$new_pages = recursive_append_children($children[0], $children);

function recursive_append_children($arr, $children){
    foreach($arr as $key => $page)
        if(isset($children[$key]))
            $arr[$key]['children'] = recursive_append_children($children[$key], $children);
    return $arr;
}

print_r($new_pages);

Output for 7.1.25 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: Array ( [1] => Array ( [id] => 1 [name] => Hello World [children] => Array ( [2] => Array ( [id] => 1 [name] => Child of Hello World [children] => Array ( [4] => Array ( [id] => 4 [name] => Grand-child of Hello World [children] => Array ( [6] => Array ( [id] => 6 [name] => Great-grand-child of Hello World ) ) ) ) ) ) ) )
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Array ( [1] => Array ( [id] => 1 [name] => Hello World [children] => Array ( [2] => Array ( [id] => 1 [name] => Child of Hello World [children] => Array ( [4] => Array ( [id] => 4 [name] => Grand-child of Hello World [children] => Array ( [6] => Array ( [id] => 6 [name] => Great-grand-child of Hello World ) ) ) ) ) ) ) )

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