title: How to get All input of POST in Laravel
body: <p>I am using Laravel 5 and trying to get all input of POST variable in controller like this-</p>
  
  <pre><code>public function add_question()
  {
      return Request::all();
  }
  </code></pre>
  
  <p>So, I am getting this errors-</p>
  
  <p><a href="https://i.stack.imgur.com/VNGJk.png" rel="noreferrer"><img src="https://i.stack.imgur.com/VNGJk.png" alt="enter image description here"></a></p>
  
  <p>What I am doing wrong?</p>