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Zend Framework常用校验器详解

程序员文章站 2024-04-01 20:36:04
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:

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。

更多关于zend相关内容感兴趣的读者可查看本站专题:《zend framework框架入门教程》、《php优秀开发框架总结》、《yii框架入门及常用技巧总结》、《thinkphp入门教程》、《php面向对象程序设计入门教程》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总

希望本文所述对大家基于zend framework框架的php程序设计有所帮助。