title: form_input as only numeric in CodeIgniter
body: <p>I'd like to change the type of input field from text to numbers only.I've tried as following</p>
  
  <pre><code>&lt;?= form_input('num', '','class="form-control" id="num", type="number"');?&gt;
  </code></pre>
  
  <p>but not working</p>