本文实例讲述了Zend Framework常用校验器。分享给大家供大家参考,具体如下:
Date日期校验器
代码:
<?php
require_once 'Zend/Validate/Date.php';
function c_date($date){
$validator = new Zend_Validate_Date();
if($validator->isValid($date)){
echo "输入的日期格式:";
echo $date."有效!<p>";
}else{
echo "输入的日期格式:";
echo $date."无效!<p>";
}
}
$date1 = "2008-02-15";
$date2 = "2008-02-31";
$date3 = "02-15-2008";
c_date($date1);
c_date($date2);
c_date($date3);
结果:
输入的日期格式:2008-02-15有效!
输入的日期格式:2008-02-31无效!
输入的日期格式:02-15-2008无效!
点评:源码解析
public function isValid($value)
{
if (!is_string($value) && !is_int($value) && !is_float($value) &&
!is_array($value) && !($value instanceof Zend_Date)) {
$this->_error(self::INVALID);
return false;
}
$this->_setValue($value);
if (($this->_format !== null) || ($this->_locale !== null) || is_array($value) ||
$value instanceof Zend_Date) {
require_once 'Zend/Date.php';
if (!Zend_Date::isDate($value, $this->_format, $this->_locale)) {
if ($this->_checkFormat($value) === false) {
$this->_error(self::FALSEFORMAT);
} else {
$this->_error(self::INVALID_DATE);
}
return false;
}
} else {
if (!preg_match('/^\d{4}-\d{2}-\d{2}$/', $value)) {
$this->_format = 'yyyy-MM-dd';
$this->_error(self::FALSEFORMAT);
$this->_format = null;
return false;
}
list($year, $month, $day) = sscanf($value, '%d-%d-%d');
if (!checkdate($month, $day, $year)) {
$this->_error(self::INVALID_DATE);
return false;
}
}
return true;
}
InArray数组包含校验器
如果内容包含在数组中将返回True,否则返回False。
代码:
<?php
require_once 'Zend/Validate/InArray.php';
function c_array($n){
$temp = array("北京","上海","天津","重庆");
$validator = new Zend_Validate_InArray($temp);
if($validator->isValid($n)){
echo "指定的内容:";
echo $n.",存在于指定数组中!<p>";
}else{
echo "指定的内容:";
echo $n.",不存在于指定数组中!<p>";
}
}
$city1 = "北京";
$city2 = "重庆";
$city3 = "郑州";
c_array($city1);
c_array($city2);
c_array($city3);
结果:
指定的内容:北京,存在于指定数组中!
指定的内容:重庆,存在于指定数组中!
指定的内容:郑州,不存在于指定数组中!
Regex正则匹配校验器
通过使用正则表达式,再加上合理使用本校验器,几乎可以实现所有的校验规则。
代码:
<?php
require_once "Zend/Validate.php";
function c_rege($v){
$pattern = array("/ab{2,}/");
if(Zend_Validate::is($v,"Regex",$pattern)){
echo "<font color=\"#006600\">指定的内容:";
echo $v."<p>符合定义的正规规则!</font>";
echo "<p>";
}else{
echo "<font color=\"#ff0000\">指定的内容:";
echo $v."<p>不符合定义的正规规则!</font>";
echo "<p>";
}
}
$temp1 = "ab";
$temp2 = "abb";
$temp3 = "abbb";
c_rege($temp1);
c_rege($temp2);
c_rege($temp3);
结果:
指定的内容:ab
不符合定义的正规规则!
指定的内容:abb
符合定义的正规规则!
指定的内容:abbb
符合定义的正规规则!
点评:
public function __construct($pattern)
{
if ($pattern instanceof Zend_Config) {
$pattern = $pattern->toArray();
}
if (is_array($pattern)) {
if (array_key_exists('pattern', $pattern)) {
$pattern = $pattern['pattern'];
} else {
require_once 'Zend/Validate/Exception.php';
throw new Zend_Validate_Exception("Missing option 'pattern'");
}
}
$this->setPattern($pattern);
}
构造函数初始化私有属性,
public function isValid($value)
{
if (!is_string($value) && !is_int($value) && !is_float($value)) {
$this->_error(self::INVALID);
return false;
}
$this->_setValue($value);
$status = @preg_match($this->_pattern, $value);
if (false === $status) {
$this->_error(self::ERROROUS);
return false;
}
if (!$status) {
$this->_error(self::NOT_MATCH);
return false;
}
return true;
}
进行验证工作。
自定义校验器编写
继承Zend_Validate_Interface接口实现用户自定义校验器。
代码案例,功能判断指定数值是否为3的倍数。
接口代码:
<?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) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Interface.php 24593 2012-01-05 20:35:02Z matthew $
*/
/**
* @category Zend
* @package Zend_Validate
* @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
interface Zend_Validate_Interface
{
/**
* Returns true if and only if $value meets the validation requirements
*
* If $value fails validation, then this method returns false, and
* getMessages() will return an array of messages that explain why the
* validation failed.
*
* @param mixed $value
* @return boolean
* @throws Zend_Validate_Exception If validation of $value is impossible
*/
public function isValid($value);
/**
* Returns an array of messages that explain why the most recent isValid()
* call returned false. The array keys are validation failure message identifiers,
* and the array values are the corresponding human-readable message strings.
*
* If isValid() was never called or if the most recent isValid() call
* returned true, then this method returns an empty array.
*
* @return array
*/
public function getMessages();
}
要实现其中的两个方法,一个是isValid(),一个是getMessages()
实现代码:
<?php
require_once "Zend/Validate/Interface.php";
class MyValidator implements Zend_Validate_Interface{
protected $_messages = array();
public function isValid($value){
$this->_messages = array();
$requirement = !($value%3);
if(!$requirement){
$this->_messages[] = "'$value'不能被3整除";
return false;
}
return true;
}
public function getMessages(){
return $this->_messages;
}
}
function c_n_3($n){
$validator = new MyValidator();
if($validator->isValid($n)){
echo "指定的数值:";
echo $n.",是3的倍数!<p>";
}else{
echo "指定的数值:";
echo $n.",不是3的倍数!<p>";
echo "失败的消息为:<p>";
foreach ($validator->getMessages() as $message) {
echo "$message<p>";
}
}
}
$num1 = 5;
$num2 = 6;
$num3 = 8;
c_n_3($num1);
c_n_3($num2);
c_n_3($num3);
结果:
指定的数值:5,不是3的倍数!
失败的消息为:
'5'不能被3整除
指定的数值:6,是3的倍数!
指定的数值:8,不是3的倍数!
失败的消息为:
'8'不能被3整除
点评:
这里通过isValid()方法来设置属性信息,通过getMessages()方法来获取错误消息。错误消息是一个数组,通过foreach()方法来遍历读取。
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