1<?php 2/** 3 * Zend Framework (http://framework.zend.com/) 4 * 5 * @link http://github.com/zendframework/zf2 for the canonical source repository 6 * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com) 7 * @license http://framework.zend.com/license/new-bsd New BSD License 8 */ 9 10namespace Zend\Validator; 11 12interface ValidatorInterface 13{ 14 /** 15 * Returns true if and only if $value meets the validation requirements 16 * 17 * If $value fails validation, then this method returns false, and 18 * getMessages() will return an array of messages that explain why the 19 * validation failed. 20 * 21 * @param mixed $value 22 * @return bool 23 * @throws Exception\RuntimeException If validation of $value is impossible 24 */ 25 public function isValid($value); 26 27 /** 28 * Returns an array of messages that explain why the most recent isValid() 29 * call returned false. The array keys are validation failure message identifiers, 30 * and the array values are the corresponding human-readable message strings. 31 * 32 * If isValid() was never called or if the most recent isValid() call 33 * returned true, then this method returns an empty array. 34 * 35 * @return array 36 */ 37 public function getMessages(); 38} 39