PHP: nested menu with a recursive function, expand only some nodes (not all the tree)

Question

I have this array, called $nested (it\'s a long one, but I tried to get a comprehensive scenario):

Array
(
    [1] => Array
        (
                


        

Answer 1

At last that's what I did, it works very fine:

// create array of ancestors' ID from current page
function path($page = 0) {
    global $database_connApp, $connApp;
    // let's create arrays
    do {
        mysql_select_db($database_connApp, $connApp);
        $query_rsPage = "SELECT pages.pag_id FROM pages WHERE pages.pag_id = " . $page;
        $rsPage = mysql_query($query_rsPage, $connApp) or die(mysql_error());
        $row_rsPage = mysql_fetch_assoc($rsPage);
        $bid[] = $row_rsPage['pag_id'];
        $page = $row_rsPage['pag_parent'];
    } while ($page > 0);

    // move to the last array index
    end($bid);
    $output = $bid;
    return $output;
}

---

// create the menu
function fmenu($parent, $array, $path) {
    $has_children = false;
    foreach($array as $key => $value) {
        if (in_array($value['parent'], $path)) {
            if ($value['parent'] == $parent) {
                if ($has_children === false && $parent) {
                    $has_children = true;
                    echo '<ul>' ."\n";
                }
                $active = ($_GET['iData'] == $value['id']) ? ' class="active"' : '';
                echo '<li' . $active . '>' . "\n";
                    echo '<a href="../pagine/' . $value['id'] . '/' . slugify($value['title']) . '.htm">' . html($value['title']) . '</a>' . " \n";
                echo "\n";
                    fmenu($key, $array, $path);
                echo "</li>\n";
            }
        }
    }
    if ($has_children === true && $parent) echo "</ul>\n";
}

---

echo fmenu(0, $nested, path($row_rsEdit['pag_id']));

Answer 2

You're almost there. Just one small problem: instead of recursive($key, $array) you need recursive($key + 1, $array). Still, as said by others, this would be a lot nicer if you just generated the entire output with PHP and then controlled it all with javascript. Having the page reload every time the user clicks an item is really not a good user experience.