convert array to treeview in php

Question

How to convert array to treeview in php

Below is my array

Array
(
    [0] => Array
        (
            [efi] => Array
                (
                )
        )
    [1] => Array
        (
            [grub] => Array
                (
                    [0] => Array
                        (
                            [fonts] => Array
                                (
                                )
                        )
                    [1] => Array
                        (
                            [i386-pc] => Array
                                (
                                )
                        )
                    [2] => Array
                        (
                            [locale] => Array
                                (
                                )
                        )
                    [3] => Array
                        (
                            [x86_64-efi] => Array
                                (
                                )
                        )
                )
        )
)

I want output as treeview

efi
grub

and under grub I want

fonts
i386-pc
locale
x86_64-efi

I have used below code for same

function generateTreeMenu($dir_array, $parent = 0, $limit=0){
            if($limit > 1000) return '';
            $tree = '';
            $tree = '<ul>';
            for($i=0, $ni=count($dir_array); $i < $ni; $i++){
                if($dir_array[$i]['parent_id'] == $parent){
                    $tree .= '<li><a>';
                    $tree .= $dir_array[$i]['title'].'</a>';
                    $tree .= generatePageTree($dir_array, $dir_array[$i]['id'], $limit++);
                    $tree .= '</li>';
                }
            }
            $tree .= '</ul>';
            return $tree;
}

generateTreeMenu($dir_array);

it show warning Undefined property: stdClass::$parent_id in

Possible duplicate of php tree ul li hierarchy menu from array — Ali Alwash
– Ali Alwash, Commented Oct 13, 2017 at 12:23
Please post generatePageTree(), we cannot replicate your code and try it without it. — Nic3500
– Nic3500, Commented Oct 13, 2017 at 13:16

Nic3500 · Accepted Answer · 2017-10-13 13:49:39Z

Here is my solution, based on your post:

<?php
echo "<pre>";
$dir_array = array( array( "efi"  => array() ),
                    array( "grub" => array(
                                           array("fonts"      => array()),
                                           array("i386-pc"    => array()),
                                           array("locale"     => array()),
                                           array("x86_64-efi" => array())
                                          )
                         )
                  );
print_r($dir_array);
echo "</pre>\n";

function mygenerateTreeMenu($dir_array,$limit = 0)
{
    $key = '';
    if ($limit > 1000) return '';
    foreach ($dir_array as $key => $value)
    {
        if (!is_int($key))
        {
            $tree .= "<li>";
            $tree .= "<a>$key</a><ul>";
            $tree .= mygenerateTreeMenu($value,$limit++);
            $tree .= "</ul></li>\n";
        }
        else
        {
            $tree .= mygenerateTreeMenu($value,$limit++);
        }
    }
    return $tree;
}

echo "<ul>\n";
$tree = mygenerateTreeMenu($dir_array);
echo $tree;
echo "</ul>\n";
?>

I removed the $parent as I did not need it. Then because of the way your array is built, integer indexes are ignored. If you can modify your array, you could streamline it and remove integer indexes completely and treat is as a hash table. It would make the recursive code simpler.

Collectives™ on Stack Overflow

convert array to treeview in php

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related