title: Zend Validator for number
body: <p>How can I extend the following zend validator to include numbers with commas and points separator. Eg: 1.234.567,89 </p>
  
  <pre><code>return array(
      "*" =&gt; array("allowEmpty" =&gt; true),
      "pret"  =&gt; array(
                    "digits", 
                    "presence" =&gt; "required"
                 ),
      );
  </code></pre>