PHP Filter functions

PHP uses the filter extension to write parameter-handling classes. http://www.blags.org/php-security-filter-function/ Exp: First introduce the file Include ' filter.php ' $email = cfilter::email ($_post[' email '); Verify that the string is returned successfully, and vice versa returns false. /** * @ Parameter Validation function * @method: * @license http://www.blags.org/ * @created: July 02, 2011 11:00 * @copyright 1997-2011 the Martin Group * @author Martin * */ Abstract class Cfilter { /** * Type * @var Array */ public static $varType = Array ( ' GET ' = Input_get, ' POST ' = Input_post, ' Cookies ' = 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_regexp, ' URL ' =>filter_validate_url, ' EMAIL ' =>filter_validate_email, ' IP ' =>filter_validate_ip, ); /** * Filter List Support */ private static function lists () { return Filter_list (); } /** * Authentication 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; } /** * Detection parameters are present * @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 Variables * @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 '); } } Copy Code

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