/**
* Validate input has an extension and is in the whitelist.
*
* @uses Titon\Utility\Loader
*
* @param string $input
* @param string|array $extensions
* @return bool
*/
public static function ext($input, $extensions = array('gif', 'jpeg', 'png', 'jpg'))
{
if (is_array($input) && isset($input['name'])) {
$input = $input['name'];
}
return in_array(Path::ext($input), (array) $extensions, true);
}
function ext($string)
{
return Path::ext($string);
}
