php filter function-PHP Tutorial-php.cn

php filter function

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Release： 2016-07-25 09:09:24

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PHP uses the filter extension to write a parameter processing class.
http://www.blags.org/php-security-filter-function/
exp:
First import the file
include 'filter.php'
$email = CFilter::Email($_POST['email']);
If the verification is successful, it will return a string, otherwise it will return false.

/**
* @parameter verification function
* @method:
* @license http://www.blags.org/
* @created: July 02, 2011 11:00
* @author Martin
**/
abstract class CFilter
{
/**
* type
* @var array
*/
public static $varType = array(
'GET' => INPUT_GET,
'POST' => INPUT_POST,
'COOKIE'=> INPUT_COOKIE,
'SERVER'=> INPUT_SERVER,
'ENV' => INPUT_ENV
);
public static $filterType = array(
'STRING' = > FILTER_SANITIZE_STRING,
'INT' => FILTER_VALIDATE_INT,
'BOOLEAN' => FILTER_VALIDATE_BOOLEAN,
'FLOAT' => FILTER_VALIDATE_FLOAT,
'REGEXP' => FILTER_VALIDATE_REGEX P,
'URL' => FILTER_VALIDATE_URL,
'EMAIL' => FILTER_VALIDATE_EMAIL,
'IP' => FILTER_VALIDATE_IP,
);
/**
* Support filter list
*/
private static function lists()
{
return filter_list();
}
/ **
* Validation type
* @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;
}
/**
* Check whether the parameter exists
* @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 = 'INT')
{
$FilterVarType = self::getVarType($setVarType);
$filterType = self::getFilterType($filterType);
if ( is_null($FilterVarType) || is_null($filterType))
return false;
return filter_input($FilterVarType, $varName, $filterType);
}
/**
* Validation variable
* @param string $var
* @param string $filterType
*/
public static function FilterVar($ var,$filterType)
{
$filterType = self::getFilterType($filterType);
return filter_var($var, $filterType);
}
/**
* string
* @param string $var
*/
public static function String($ var)
{
return self::FilterVar($var,'STRING');
}
public static function Int($var)
{
return self::FilterVar($var,'INT');
}
public static function Boolean($var)
{
return self::FilterVar($var,'INT');
}
public static function Float($var)
{
return self::FilterVar($var ,'FLOAT');
}
/**
*
* @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($var,'URL');
}
public static function Email($var)
{
return self::FilterVar($var,'EMAIL');
}
public static function Ip($var)
{
return self::FilterVar($var,'IP');
}
}

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