title: how to store simply multi array in session laravel 5.6
body: <p>i store one array in to session('cart') last click [add to cart] , when i add another array in session('cart'), but it store one array then session can not save both. 
  help me !</p>
  
  <pre><code>public function addtocart(Request $req,$id){
  
    $product = _prod::find($id)-&gt;toArray();
    $item = [
           'name' =&gt; $product['pName'],
           'description' =&gt; $product['pDesc'],
           'price' =&gt; $product['pPrice'],
           ];
  
    $cart = [
            'qtyTotal' =&gt; 0,
            'priceTotal' =&gt; 0,
            'item' =&gt; [$item]
           ];
  
     $req-&gt;session()-&gt;put('cart',$cart);
     $a = session()-&gt;get('cart');
  
  }
  </code></pre>