121 Zeilen
3,4 KiB
PHP
121 Zeilen
3,4 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_StringToLower implements Zend_Filter_Interface
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{
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/**
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* Encoding for the input string
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*
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* @var string
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*/
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protected $_encoding = null;
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/**
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* Constructor
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*
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* @param string|array|Zend_Config $options OPTIONAL
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*/
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public function __construct($options = null)
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{
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if ($options instanceof Zend_Config) {
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$options = $options->toArray();
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} else if (!is_array($options)) {
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$options = func_get_args();
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$temp = array();
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if (!empty($options)) {
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$temp['encoding'] = array_shift($options);
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}
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$options = $temp;
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}
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if (!array_key_exists('encoding', $options) && function_exists('mb_internal_encoding')) {
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$options['encoding'] = mb_internal_encoding();
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}
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if (array_key_exists('encoding', $options)) {
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$this->setEncoding($options['encoding']);
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}
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}
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/**
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* Returns the set encoding
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*
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* @return string
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*/
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public function getEncoding()
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{
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return $this->_encoding;
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}
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/**
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* Set the input encoding for the given string
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*
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* @param string $encoding
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* @return Zend_Filter_StringToLower Provides a fluent interface
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* @throws Zend_Filter_Exception
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*/
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public function setEncoding($encoding = null)
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{
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if ($encoding !== null) {
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if (!function_exists('mb_strtolower')) {
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require_once 'Zend/Filter/Exception.php';
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throw new Zend_Filter_Exception('mbstring is required for this feature');
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}
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$encoding = (string) $encoding;
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if (!in_array(strtolower($encoding), array_map('strtolower', mb_list_encodings()))) {
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require_once 'Zend/Filter/Exception.php';
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throw new Zend_Filter_Exception("The given encoding '$encoding' is not supported by mbstring");
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}
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}
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$this->_encoding = $encoding;
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return $this;
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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, converting characters to lowercase as necessary
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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 ($this->_encoding !== null) {
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return mb_strtolower((string) $value, $this->_encoding);
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}
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return strtolower((string) $value);
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}
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}
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