121 lines
3.1 KiB
PHP
121 lines
3.1 KiB
PHP
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Validate
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* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id: Alpha.php 8064 2008-02-16 10:58:39Z thomas $
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*/
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/**
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* @see Zend_Validate_Abstract
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*/
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require_once 'Zend/Validate/Abstract.php';
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/**
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* @category Zend
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* @package Zend_Validate
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* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Validate_Alpha extends Zend_Validate_Abstract
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{
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/**
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* Validation failure message key for when the value contains non-alphabetic characters
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*/
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const NOT_ALPHA = 'notAlpha';
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/**
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* Validation failure message key for when the value is an empty string
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*/
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const STRING_EMPTY = 'stringEmpty';
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/**
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* Whether to allow white space characters; off by default
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*
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* @var boolean
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*/
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public $allowWhiteSpace;
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/**
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* Alphabetic filter used for validation
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*
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* @var Zend_Filter_Alpha
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*/
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protected static $_filter = null;
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/**
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* Validation failure message template definitions
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*
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* @var array
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*/
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protected $_messageTemplates = array(
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self::NOT_ALPHA => "'%value%' has not only alphabetic characters",
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self::STRING_EMPTY => "'%value%' is an empty string"
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);
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/**
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* Sets default option values for this instance
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*
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* @param boolean $allowWhiteSpace
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* @return void
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*/
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public function __construct($allowWhiteSpace = false)
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{
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$this->allowWhiteSpace = (boolean) $allowWhiteSpace;
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}
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/**
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* Defined by Zend_Validate_Interface
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*
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* Returns true if and only if $value contains only alphabetic characters
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*
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* @param string $value
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* @return boolean
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*/
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public function isValid($value)
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{
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$valueString = (string) $value;
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$this->_setValue($valueString);
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if ('' === $valueString) {
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$this->_error(self::STRING_EMPTY);
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return false;
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}
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if (null === self::$_filter) {
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/**
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* @see Zend_Filter_Alpha
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*/
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require_once 'Zend/Filter/Alpha.php';
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self::$_filter = new Zend_Filter_Alpha();
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}
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self::$_filter->allowWhiteSpace = $this->allowWhiteSpace;
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if ($valueString !== self::$_filter->filter($valueString)) {
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$this->_error(self::NOT_ALPHA);
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return false;
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}
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return true;
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}
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}
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