Generate megamenu from adjacency list

I have an array below:

Array
(
    [0] => Array
        (
            [id] => 1
            [name] => Electronics
            [parent] => 0
            [description] => Large amount of electronics in our store
            [columns] => 6
            [products] => 5
            [subcat] => Array
                (
                    [0] => Array
                        (
                            [id] => 7
                            [name] => Moble phones
                            [parent] => 1
                            [description] => 
                            [columns] => 0
                            [products] => 5
                            [subcat] => Array
                                (
                                )

                        )

                    [1] => Array
                        (
                            [id] => 16
                            [name] => Computers
                            [parent] => 1
                            [description] => 
                            [columns] => 0
                            [products] => 0
                            [subcat] => Array
                                (
                                    [0] => Array
                                        (
                                            [id] => 37
                                            [name] => Desktops
                                            [parent] => 16
                                            [description] => 
                                            [columns] => 0
                                            [products] => 0
                                            [subcat] => Array
                                                (
                                                )

                                        )

                                    [1] => Array
                                        (
                                            [id] => 17
                                            [name] => Car Electronics
                                            [parent] => 16
                                            [description] => 
                                            [columns] => 0
                                            [products] => 0
                                            [subcat] => Array
                                                (
                                                    [0] => Array
                                                        (
                                                            [id] => 43
                                                            [name] => GPS & Navigation
                                                            [parent] => 17
                                                            [description] => 
                                                            [columns] => 0
                                                            [products] => 0
                                                            [subcat] => Array
                                                                (
                                                                )

                                                        )

                                                )

                                        )

                                )

                        )

                    [2] => Array
                        (
                            [id] => 18
                            [name] => TV & Video
                            [parent] => 1
                            [description] => 
                            [columns] => 0
                            [products] => 2
                            [subcat] => Array
                                (
                                    [0] => Array
                                        (
                                            [id] => 48
                                            [name] => LED TVs
                                            [parent] => 18
                                            [description] => 
                                            [columns] => 0
                                            [products] => 2
                                            [subcat] => Array
                                                (
                                                )

                                        )

                                    [1] => Array
                                        (
                                            [id] => 49
                                            [name] => Plasma TVs
                                            [parent] => 18
                                            [description] => 
                                            [columns] => 0
                                            [products] => 0
                                            [subcat] => Array
                                                (
                                                )

                                        )

                                )

                        )

                )

        )

    [1] => Array
        (
            [id] => 14
            [name] => Video Games
            [parent] => 0
            [description] => 
            [columns] => 0
            [products] => 0
            [subcat] => Array
                (
                    [0] => Array
                        (
                            [id] => 30
                            [name] => Nintendo Wii
                            [parent] => 14
                            [description] => 
                            [columns] => 0
                            [products] => 0
                            [subcat] => Array
                                (
                                )

                        )

                )

        )

)

I have a php recursive function to convert this array into html menu:

private function buildNavHTML($nav, $tabs = "") {

        $html = !strlen($tabs) ? 
                $tabs.'<ul class="navs">' : 
                $tabs.'<ul>';

        foreach($nav as $page) {

            $html .= $tabs."    ".'<li>';

            (isset($page['subcategories'][0])) ? 
        $html .= '<a class="subcat" href="cat?cid='.$page['id'].'">'.$page['name'].'</a>' : 
        $html .= '<a href="cat?cid='.$page['id'].'">'.$page['name'].'</a>';

            if(isset($page['subcat'][0])) {
                $html .= self::buildNavHTML($page['subcat'], $tabs."        ");
            }
            $html .= '</li>';
        }
        $html .= $tabs.'</ul>';

        return $html;
    }

And this function will output HTML tree:

 <ul class="navs">
       <li class="">
          <a class="shop_subcat" href="cat?cid=1">Electronics</a>
             <ul>
                <li>
                   <a href="cat?cid=7">Moble phones</a>
                </li>            
                <li>
                   <a class="shop_subcat" href="cat?cid=16">Computers</a>
                     <ul>
                       <li>
                          <a href="cat?cid=37">Desktops</a>
                       </li>
                       <li>
                          <a class="shop_subcat" href="cat?cid=17">Car Electronics</a>                      
                             <ul>
                                <li>
                                   <a href="cat?cid=43">GPS &amp; Navigation</a>
                                </li>
                             </ul>
                        </li>
                     </ul>
                   </li>
                   <li>
                      <a class="shop_subcat" href="cat?cid=18">TV &amp; Video</a>              
                        <ul>
                           <li>
                              <a href="cat?cid=48">LED TVs</a>
                           </li>
                           <li>
                              <a href="cat?cid=49">Plasma TVs</a>
                           </li>
                         </ul>
                    </li>
                 </ul> 
             </li>
             <li class="">
                <a class="shop_subcat" href="cat?cid=14">Video Games</a>
                   <ul>
                      <li>
                         <a href="cat?cid=30">Nintendo Wii</a>
                      </li>
                   </ul>
              </li>
            </ul>

But I need to get something like that: _http://vasterad.com/plugins/responsive_css3_mega_menu/#

Separated by columns as I have a columns field in my database. How can I fix my recursion function? Thanks!

Answers


1.first you should add this css in your page :

<style>
   @import url("icons.css"); .menu{display:block;position:relative}.menu,.menu ul{margin:0;padding:0;list-style:none;position:relative}.menu ul a{float:left}.menu ul ul a{float:none}.menu .mega-menu a{float:none;padding:0}.menu ul ul,.menu .mega-menu,.menu .mega-menu ol li{opacity:0;visibility:hidden;display:none ! important/9;-webkit-transition:opacity 150ms ease-in-out;-moz-transition:opacity 150ms ease-in-out;-o-transition:opacity 150ms ease-in-out;-ms-transition:opacity 150ms ease-in-out;transition:opacity 150ms ease-in-out}.menu li:hover>ul,.menu li:hover>.mega-menu,.menu li:hover>.mega-menu ol li{opacity:1;visibility:visible;display:block ! important/9}.menu ul:after{content:"";clear:both;display:block}.menu ul li{float:left;-webkit-transition:all 150ms ease-in-out;-moz-transition:all 150ms ease-in-out;-o-transition:all 150ms ease-in-out;-ms-transition:all 150ms ease-in-out;transition:all 150ms ease-in-out}.menu ul li a{display:block;padding:14px 20px 15px 20px;color:#fff;font-weight:700;text-decoration:none}.menu .arrow:after{content:"";float:right;text-align:right;width:0;height:0;display:block;border-left:3px solid rgba(0,0,0,0);border-right:3px solid rgba(0,0,0,0);border-top:3px solid #fff;top:9px;margin:0 0 0 5px;position:relative;border-left:3px solid transparent/9;border-right:3px solid transparent/9}.menu ul li ul li .arrow:after{border-top:3px solid transparent;border-bottom:3px solid transparent;border-left:3px solid #bbb;margin:-2px 0 0 5px}.menu i{font-size:14px;font-weight:400;font-style:normal;float:left;margin:4px 4px 0 -2px;line-height:14px;padding:0}.menu .right{float:right}.menu .right ul,.menu .right .mega-menu{right:0}.menu ul ul{background:#fff;border:1px solid #e0e0e0;border-top:0;border-bottom:0;position:absolute;top:100%;width:170px;-webkit-box-shadow:0 1px 1px rgba(0,0,0,.04);box-shadow:0 1px 1px rgba(0,0,0,.04)}.menu ul ul ul{position:absolute;left:100%;border-top:1px solid #e0e0e0;top:-1px}.menu ul ul li a{font-weight:400;padding:8px 12px;color:#777;border-bottom:1px solid #e4e4e4}.menu ul ul li{float:none;position:relative;-webkit-transition:none;-moz-transition:none;-o-transition:none;-ms-transition:none;transition:none}.menu ul ul li a:active,.menu ul ul li:hover{background:#f5f5f5!important}.menu ul ul li{background:#fff!important}.mega-menu{position:absolute;top:100%;padding:18px 11px;background-color:#fff;border:1px solid #e0e0e0;border-top:none;color:#777;-webkit-box-shadow:0 1px 1px rgba(0,0,0,.04);box-shadow:0 1px 1px rgba(0,0,0,.04);-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box}.mega-menu ol{list-style:none;padding:0}.mega-menu ol li{width:100%}.mega-menu ol li:hover,.mega-menu ol li a{color:#777;font-size:12px;padding:0;font-weight:400;background-color:#fff;background-image:none}.mega-menu ol li a:hover{color:#505050}.mega-menu div h4{font-size:14px;font-weight:700;color:#404040;border-bottom:1px solid #e4e4e4;padding:0 0 8px 0;margin:0 0 10px 0}.mega-menu .col-1{width:135px}.mega-menu .col-2{width:288px}.mega-menu .col-3{width:441px}.mega-menu .col-4{width:594px}.mega-menu .col-5{width:747px}.mega-menu .col-6{width:900px}.mega-menu .col-1,.mega-menu .col-2,.mega-menu .col-3,.mega-menu .col-4,.mega-menu .col-5,.mega-menu .col-6{float:left;margin:0 9px}.mega-menu.full-width{left:0;width:100%;padding:18px 0}.full-width .col-1{width:14.1%}.full-width .col-2{width:30.4%}.full-width .col-3{width:46.7%}.full-width .col-4{width:63%}.full-width .col-5{width:79.3%}.full-width .col-6{width:95.6%}.full-width .col-1,.full-width .col-2,.full-width .col-3,.full-width .col-4,.full-width .col-5,.full-width .col-6{float:left;margin:0 0 0 2.2%}@media only screen and (max-width: 767px){.menu ul li{width:100%;cursor:pointer}.menu ul li{position:relative}.menu .mega-menu ol li{height:0}.menu li:hover>.mega-menu ol li{height:auto}.mega-menu,.menu ul ul{z-index:100}.menu ul ul{width:100%;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box}.menu ul ul ul{left:0}.menu ul ul li:hover>ul{position:relative;border:none;border-top:1px solid #e4e4e4;-webkit-box-shadow:none;box-shadow:none}.menu ul li ul li .arrow:after{border-left:3px solid transparent;border-right:3px solid transparent;border-top:3px solid #bbb;margin:0}.mega-menu{padding:18px 0}.mega-menu ol li:last-child{margin:0 0 20px 0}.menu .col-1,.full-width .col-1,.menu .col-2,.full-width .col-2,.menu .col-3,.full-width .col-3,.menu .col-4,.full-width .col-4,.menu .col-5,.full-width .col-5,.menu .col-6,.full-width .col-6{float:left;margin:0 0 0 5%;width:90%}} .style-1.menu, .style-1.menu ul li { background-color: #2b2a28; background-image: linear-gradient(bottom, rgba(0,0,0, 0) 50%, rgba(255,255,255, 0.04) 0%); background-image: -o-linear-gradient(bottom, rgba(0,0,0, 0) 50%, rgba(255,255,255, 0.04) 0%); background-image: -moz-linear-gradient(bottom, rgba(0,0,0, 0) 50%, rgba(255,255,255, 0.04) 0%); background-image: -webkit-linear-gradient(bottom, rgba(0,0,0, 0) 50%, rgba(255,255,255, 0.04) 0%); background-image: -ms-linear-gradient(bottom, rgba(0,0,0, 0) 50%, rgba(255,255,255, 0.04) 0%); } .style-1.menu ul li:hover { background-color: #eb4e01; background-image: linear-gradient(bottom, rgba(0,0,0, 0) 50%, rgba(255,255,255, 0.08) 0%); background-image: -o-linear-gradient(bottom, rgba(0,0,0, 0) 50%, rgba(255,255,255, 0.08) 0%); background-image: -moz-linear-gradient(bottom, rgba(0,0,0, 0) 50%, rgba(255,255,255, 0.08) 0%); background-image: -webkit-linear-gradient(bottom, rgba(0,0,0, 0) 50%, rgba(255,255,255, 0.08) 0%); background-image: -ms-linear-gradient(bottom, rgba(0,0,0, 0) 50%, rgba(255,255,255, 0.08) 0%); }
  </style>

and you should make your function that have this out put:

 <div class="container">
    <div class="menu style-1">
     <ul class="menu">
           <!--head of your tabs-->
                <li>
                   <a class="arrow" href="#">
                       <i class="icon-folder-open"></i>
                                       Electronics
                      </a>
                              <!--subtabs of your head tabs-->
                                  <ul>
                                      <li>
                                          <a href="#">Moble phones</a>
                                      </li>
                                  </ul>
                  </li>
          </ul>

notice:you should know more about css http://www.w3schools.com/css/ best regards


Your markup is indeed fine, you should style your menu with HTML and CSS.

I created a fiddle to help you along. It is your menu, with a <nav> tag around them to make the styling easier.

Fiddle here

Hopefully this will get you going!


Either i'm misunderstanding the issue, or you are simply looking for markup of your generated html code. After a quick glance it looks like your recursive function is fine... it'll just look weird. The layout and looks isn't really something PHP handles. For this you want to use css and just regular HTML.

One remark on the actual code in the recursive function ... Inline HTML is not really the way to go. If you would work with a proper view, i do believe you'll be able to identify your 'problem' a bit better.


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