zend framework2 - zf2 formFilter regex howto -

using zendframework v2, have run problem regex validator on field created form factory. other fields (using same pattern) work without problem.

any tips, or pointers appreciated.

            $inputfilter->add($factory->createinput([              'name' => 'organizationname',              'filters' => array(                  array('name' => 'striptags'),                  array('name' => 'stringtrim'),              ),              'validators' => array(                  array(                     'name' => 'notempty',                     'options' => array(                         'messages' => array(                             \zend\validator\notempty::is_empty => 'organization name field empty',                         ),                     ),                 ),                 array(                     'name' => 'regex',                     'options' => array(                         'pattern' => '/^[a-z0-9 &-_\.,@]{3,25}$/i',                         'messages' => array(                             \zend\validator\regex::invalid => 'invalid input, a-z, 0-9 & - _ . characters allowed',                         ),                     ),                 ),                 array (                     'name' => 'stringlength',                      'options' => array(                          'encoding' => 'utf-8',                          'min' => '2',                          'max' => '25',                          'messages' => array(                             \zend\validator\stringlength::too_short => 'organization name field must @ least 8 characters in length',                             \zend\validator\stringlength::too_long => 'organization name field must no longer 25 characters in length',                         ),                     ),                  ),              ),          ]));  

additional details: using zf2 generate form, create validation filter , use controller handle proper form submissions.

the problem having above inputfilter object handles "organizationname" regex filter.

it seems although regex patter use both in form definition , input filter of [a-z0-9 &-_.,@]{3,25} not handle string intl. widgets inc. though not error message $form->getmessages() etc.

color me stumpted

that's because regexp match intl. widgets inc. : http://rubular.com/r/opbk2cdarb