html - PHP, MYSQL - Create Multi Level Menu with Dynamic Link -


i need create multi-level menu (3 level @ least), succeed create menu can't figure how build link inside menu. code building multi-level menu

function menu_induk($array, $parents = array(),$induk_menu = 0)  {     $lparents = array();     if($induk_menu==0)     {         foreach ($array $element) {             if (($element['induk_menu'] != 0) && !in_array($element['induk_menu'],$parents)) {                 $parents[] = $element['induk_menu'];             }         }     }     return $parents;  }    function bootstrap_menu($array,$class1 = "dropdown",$induk_menu = 0)     {         $array_parents = menu_induk($array);         $array_parents_link = menu_induk_link($array);         $menu_html = '';         foreach($array $element)         {             if($element['induk_menu']==$induk_menu)             {                 if(in_array($element['id_menu'],$array_parents))                 {                     $menu_html .= '<li class="'.$class1.'">';                     $menu_html .= '<a href="'.base_url().$element['link'].'" class="dropdown-toggle" data-toggle="'.$class1.'" role="button" aria-expanded="false">'.$element['nama_menu'].' <span class="caret"></span></a>';                 }                 else {                     $menu_html .= '<li>';                     $menu_html .= '<a href="' . $element['link'] . '">' . $element['nama_menu'] . '</a>';                 }                 if(in_array($element['id_menu'],$array_parents))                 {                     $menu_html .= '<ul class="dropdown-menu" role="menu">';                     $menu_html .= bootstrap_menu($array, "dropdown-submenu" , $element['id_menu'], $array_parents);                     $menu_html .= '</ul>';                 }                 $menu_html .= '</li>';             }          }         return $menu_html;     }

the first function retrieve top level menu , second function create multilevel menu, question how build link in menu if hover on 3rd level menu it's base-link/first-level/second/third

here sql

create table `menu` (   `id_menu` int(10) not null,   `nama_menu` varchar(40) default null,   `link` varchar(50) not null,   `induk_menu` int(5) default null,   `is_root` tinyint(1) default null,   `aktif` tinyint(1) default null ) engine=innodb default charset=latin1;


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