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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Validate
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id$
*/
/**
* @see Zend_Validate_Abstract
*/
require_once 'Zend/Validate/Abstract.php';
/**
* @category Zend
* @package Zend_Validate
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Validate_Digits extends Zend_Validate_Abstract
{
const NOT_DIGITS = 'notDigits';
const STRING_EMPTY = 'digitsStringEmpty';
const INVALID = 'digitsInvalid';
/**
* Digits filter used for validation
*
* @var Zend_Filter_Digits
*/
protected static $_filter = null;
/**
* Validation failure message template definitions
*
* @var array
*/
protected $_messageTemplates = array(
self::NOT_DIGITS => "'%value%' must contain only digits",
self::STRING_EMPTY => "'%value%' is an empty string",
self::INVALID => "Invalid type given. String, integer or float expected",
);
/**
* Defined by Zend_Validate_Interface
*
* Returns true if and only if $value only contains digit characters
*
* @param string $value
* @return boolean
*/
public function isValid($value)
{
if (!is_string($value) && !is_int($value) && !is_float($value)) {
$this->_error(self::INVALID);
return false;
}
$this->_setValue((string) $value);
if ('' === $this->_value) {
$this->_error(self::STRING_EMPTY);
return false;
}
if (null === self::$_filter) {
require_once 'Zend/Filter/Digits.php';
self::$_filter = new Zend_Filter_Digits();
}
if ($this->_value !== self::$_filter->filter($this->_value)) {
$this->_error(self::NOT_DIGITS);
return false;
}
return true;
}
}
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