php function that create nested ul li from array+object

Question

i have array+object like this.

this array+object in json string

[{"tid":"1","parent_id":"0","language":"th","t_type":"category","t_name":"cat1","t_description":null,"t_uri":"cat1","t_uri_encoded":"cat1","t_uris":null,"meta_title":null,"meta_description":null,"meta_keywords":null,"childs":[{"tid":"3","parent_id":"1","language":"th","t_type":"category","t_name":"cat1.1","t_description":null,"t_uri":"cat1.1","t_uri_encoded":"cat1.1","t_uris":null,"meta_title":null,"meta_description":null,"meta_keywords":null,"childs":[{"tid":"5","parent_id":"3","language":"th","t_type":"category","t_name":"cat1.1.1","t_description":null,"t_uri":"cat1.1.1","t_uri_encoded":"cat1.1.1","t_uris":null,"meta_title":null,"meta_description":null,"meta_keywords":null}]},{"tid":"4","parent_id":"1","language":"th","t_type":"category","t_name":"cat1.2","t_description":null,"t_uri":"cat1.2","t_uri_encoded":"cat1.2","t_uris":null,"meta_title":null,"meta_description":null,"meta_keywords":null}]},{"tid":"2","parent_id":"0","language":"th","t_type":"category","t_name":"cat2","t_description":null,"t_uri":"cat2","t_uri_encoded":"cat2","t_uris":null,"meta_title":null,"meta_description":null,"meta_keywords":null}]

how to create nested ul li like this.

<ul>
  <li>cat1
    <ul>
        <li>cat1.1
            <ul>
                <li>cat1.1.1</li>
            </ul>
        </li>
        <li>cat1.2</li>
    </ul>
  </li>
  <li>cat2</li>
</ul>

this is what i have tried

echo list_nested_cat( $list_item );
function list_nested_cat( $list_item, $start = 0) {
    echo '<ul style="margin-left: 1em;">';
    foreach ( $list_item as $item ) {
        if ( isset( $item->childs ) && is_array( $item->childs ) ) {
            echo '<li>'.$item->t_name.'</li>';
            list_nested_cat($item->childs);
        } else {
            echo '<li>'.$item->t_name.'</li>';
        }

    }
    echo '</ul>';
}

but this function echo incorrect html nested ul li format.

ps. i create array object from the code of arnaud576875

PHP tree structure for categories and sub categories without looping a query

Please post that ugly array as a JSON string for testing purposes? — iambriansreed
– iambriansreed, Commented Apr 25, 2012 at 3:51
@vee I used it to test my code and fixed some errors. See the updated code posted. — iambriansreed
– iambriansreed, Commented Apr 25, 2012 at 15:40

iambriansreed · Accepted Answer · 2012-04-25 15:39:19Z

3

This should get you started:

It uses a recursive function; it calls itself.

UPDATED

Tested with the JSON object and fixed some errors

<?php    

echo make_ulli($object); 

function make_ulli($array){
    if(!is_array($array)) return '';

    $output = '<ul>';
    foreach($array as $item){  

        $output .= '<li>' . $item->t_name;      

        if(property_exists($item, 'childs'))
            $output .= make_ulli($item->childs);

        $output .= '</li>';

    }   
    $output .= '</ul>';

    return $output;
}


?>

edited Apr 25, 2012 at 15:39

answered Apr 25, 2012 at 3:51

iambriansreed

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