82 Zeilen
2,2 KiB
PHP
82 Zeilen
2,2 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_Filter
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* @copyright Copyright (c) 2005-2011 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 $Id$
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*/
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/**
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* @see Zend_Filter_Interface
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*/
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require_once 'Zend/Filter/Interface.php';
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/**
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* @category Zend
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* @package Zend_Filter
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* @copyright Copyright (c) 2005-2011 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_Filter_Digits implements Zend_Filter_Interface
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{
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/**
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* Is PCRE is compiled with UTF-8 and Unicode support
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*
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* @var mixed
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**/
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protected static $_unicodeEnabled;
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/**
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* Class constructor
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*
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* Checks if PCRE is compiled with UTF-8 and Unicode support
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*
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* @return void
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*/
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public function __construct()
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{
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if (null === self::$_unicodeEnabled) {
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self::$_unicodeEnabled = (@preg_match('/\pL/u', 'a')) ? true : false;
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}
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}
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/**
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* Defined by Zend_Filter_Interface
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*
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* Returns the string $value, removing all but digit characters
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*
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* @param string $value
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* @return string
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*/
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public function filter($value)
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{
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if (!self::$_unicodeEnabled) {
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// POSIX named classes are not supported, use alternative 0-9 match
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$pattern = '/[^0-9]/';
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} else if (extension_loaded('mbstring')) {
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// Filter for the value with mbstring
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$pattern = '/[^[:digit:]]/';
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} else {
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// Filter for the value without mbstring
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$pattern = '/[\p{^N}]/';
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}
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return preg_replace($pattern, '', (string) $value);
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}
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}
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