• Zend Framework学习之常用校验器


    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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  • 原文地址:https://www.cnblogs.com/jiqing9006/p/3007577.html
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