3v4l.org

run code in 300+ PHP versions simultaneously

@ 2018-10-31T15:13:18Z

<?php

$arr = array(
    0 => array(
        "text" => "eventyrer",
        "children"=> array(
                4 => array(
                        "text" => "news",
                        "children"=> array(
                                1=> array("text"=>"a")
                            )
                    ),

                5 => array(
                        "text" => "nyheter",
                        "children"=> array(
                                1=> array("text"=>"b")
                            )
                    )
            ) 
    ),

    1 => array(
        "text" => "eventyrer2017",
        "children"=> array(
                6 => array(
                        "text" => "news",
                        "children"=> array(
                                1=> array("text"=>"c")
                            )
                    ),

                8 => array(
                        "text" => "nyheter",
                        "children"=> array(
                                1=> array("text"=>"d")
                            )
                    )
            ) 
    )

);



class Tree
{
    private $data;
    private $html;
    
    public function buildTree(array $data, $parent_id)
    {
        $this->data = $data;
        $this->html = [];
        foreach ($data as $key => $value) {
            $this->process($key, $value);
        }
        
        return $this->html;
    }
    
    private function process($parentKey, $value)
    {
        $this->html[$parentKey] = $value['text'];
        if (array_key_exists('children', $value) && count($value['children'])) {
            $this->html[$parentKey] .= '/';
            $this->process($parentKey, $value['children']);
        }
    }
}
    

$tree = new Tree();
$ul = $tree->buildTree($arr, 0);
var_dump( $ul);

Output for 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: Warning: Undefined array key "text" in /in/GQ2AR on line 64 Warning: Undefined array key "text" in /in/GQ2AR on line 64 array(2) { [0]=> NULL [1]=> NULL }
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 Warning: Undefined array key "text" in /in/GQ2AR on line 64 Warning: Undefined array key "text" in /in/GQ2AR on line 64 array(2) { [0]=> NULL [1]=> NULL }
Output for 5.6.38, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33: Notice: Undefined index: text in /in/GQ2AR on line 64 Notice: Undefined index: text in /in/GQ2AR on line 64 array(2) { [0]=> NULL [1]=> NULL }
Output for 7.3.32 - 7.3.33: array(2) { [0]=> NULL [1]=> NULL }

preferences:dark modelive preview

188.21 ms | 405 KiB | 204 Q