====== UrlRule ======

Input validation rule that tests for a valid URL with a specific URL scheme.

===== Example =====

<code php>
$form->addRule (new UrlRule ('fieldName', array ('http', 'https')));
</code>

This example checks that the value in the field "fieldName" is a URL and has a scheme of either "http" or "https".

===== Additional Information =====

  * [[catalog|Validation Rules]]
  * WACT [[wact:Form Validation]]
  * [[http://www.w3.org/Addressing/|W3C: Naming and Addressing: URIs, URLs, ...]]