gistfile1.txt

<?php

// Zend Form Snippet

// custom error message with Regex Validator

$this->addElement(new Zend_Form_Element_Text('phone_number'));
$this->getElement('phone_number')
     ->setLabel('Phone Number')
     ->setRequired(true)
     ->addValidators(array(
         array(
             'validator'   => 'Regex',
             'breakChainOnFailure' => true,
             'options'     => array( 
             'pattern' => '/^[+]?[-\d() .]*$/i',
                 'messages' => array(
                     Zend_Validate_Regex::NOT_MATCH =>'Please provide a valid Phone Number.'
                 )
             )
         ),
         array(
             'validator' => 'StringLength',
             'breakChainOnFailure' => true,
             'options' => array(
                 'min' => 10
             )
         )
     ))
     ;