title: How to validate if an input has a float value in zf2 form?
body: <p>I have this in my class</p>
  
  <pre><code>$inputFilter-&gt;add(
                      $factory-&gt;createInput(array(
                          'name' =&gt; 'precio',
                          'required' =&gt; true,
                          'validators' =&gt; array(
                              array(
                                  'name' =&gt; 'Float',
                                  'options' =&gt; array(
                                      'min' =&gt; 0,
                                  ),
                              ),
                          ),
                      ))
              );
  </code></pre>
  
  <p>When I enter a Integer number like 5 or 78 everything seems ok, but when I try with a number like 5.2 I got the next error message </p>
  
  <blockquote>
    <p>The input does not appear to be a float</p>
  </blockquote>