php filter security filter function

<?php
/**
 * @参数验证函数
 * @method:
 * @license http://www.blags.org/
 * @created:2011年07月02日 11时00分
 * @copyright 1997-2011 The Martin Group
 * @author Martin <martin@blags.org>
 * */
abstract class CFilter
{
/**
* 类型
* @var array
*/
public static $varType = array(
&#39;GET&#39;=> INPUT_GET,
&#39;POST&#39;=> INPUT_POST,
&#39;COOKIE&#39;=> INPUT_COOKIE,
&#39;SERVER&#39;=> INPUT_SERVER,
&#39;ENV&#39;=> INPUT_ENV
);
public static $filterType = array(
&#39;STRING&#39;=>FILTER_SANITIZE_STRING,
&#39;INT&#39;=>FILTER_VALIDATE_INT,
&#39;BOOLEAN&#39;=>FILTER_VALIDATE_BOOLEAN,
&#39;FLOAT&#39;=>FILTER_VALIDATE_FLOAT,
&#39;REGEXP&#39;=>FILTER_VALIDATE_REGEXP,
&#39;URL&#39;=>FILTER_VALIDATE_URL,
&#39;EMAIL&#39;=>FILTER_VALIDATE_EMAIL,
&#39;IP&#39;=>FILTER_VALIDATE_IP,
);
 
/**
* 支持过滤列表
*/
private static function lists()
{
return filter_list();
}
 
/**
* 验证类型
* @param string $type
*/
public static function filterType($type)
{
$filter_list = self::lists();
return array_search($type,$filter_list) !== false ? true : false;
}
 
/**
*
* @param $setVarType
*/
private static function getVarType($setVarType)
{
$setVarType = strtoupper($setVarType);
return isset(self::$varType[$setVarType]) ? self::$varType[$setVarType] : null;
}
 
/**
*
* @param string $setFilterType
*/
private static function getFilterType($setFilterType)
{
$setFilterType = strtoupper($setFilterType);
return isset(self::$filterType[$setFilterType]) ? self::$filterType[$setFilterType] : null;
}
 
/**
* 检测参数是否存在
* @param string $setVarType
* @param string $varName
*/
public static function VarExists($setVarType,$varName)
{
$FilterVarType = self::getVarType($setVarType);
if (is_null($FilterVarType))
return false;
return filter_has_var(self::$varType[$FilterVarType], $varName);
}
 
/**
*
* @param string $setVarType
* @param string $varName
* @param string $filterType
*/
public static function FilterInput($setVarType, $varName, $filterType = &#39;INT&#39;)
{
$FilterVarType = self::getVarType($setVarType);
$filterType = self::getFilterType($filterType);
if (is_null($FilterVarType) || is_null($filterType))
return false;
return filter_input($FilterVarType, $varName, $filterType);
}
 
/**
* 验证变量
* @param string $var
* @param string $filterType
*/
public static function FilterVar($var,$filterType)
{
$filterType = self::getFilterType($filterType);
return filter_var($var, $filterType);
}
 
/**
* 字符串
* @param string $var
*/
public static function String($var)
{
return self::FilterVar($var,&#39;STRING&#39;);
}
 
public static function Int($var)
{
return self::FilterVar($var,&#39;INT&#39;);
}
 
public static function Boolean($var)
{
return self::FilterVar($var,&#39;INT&#39;);
}
 
public static function Float($var)
{
return self::FilterVar($var,&#39;FLOAT&#39;);
}
 
/**
*
* @param string $var
* @param array $option array("options"=>array("regexp"=>"/^M(.*)/"))
*/
public static function Regexp($var,$option)
{
$filterType = self::getFilterType($filterType);
return filter_var($var, $filterType, $option);
}
 
public static function Url($var)
{
return self::FilterVar($var,&#39;URL&#39;);
}
 
public static function Email($var)
{
return self::FilterVar($var,&#39;EMAIL&#39;);
}
 
public static function Ip($var)
{
return self::FilterVar($var,&#39;IP&#39;);
}
 
}