-
- //PHP整站防注入程序,需要在公共文件中require_once本文件
- //判断magic_quotes_gpc状态
- if (@get_magic_quotes_gpc ()) {
- $_GET = sec ( $_GET );
- $_POST = sec ( $_POST );
- $_COOKIE = sec ( $_COOKIE );
- $_FILES = sec ( $_FILES );
- }
- $_SERVER = sec ( $_SERVER );
- function sec(&$array) {
- //如果是数组,遍历数组,递归调用
- if (is_array ( $array )) {
- foreach ( $array as $k => $v ) {
- $array [$k] = sec ( $v );
- }
- } else if (is_string ( $array )) {
- //使用addslashes函数来处理
- $array = addslashes ( $array );
- } else if (is_numeric ( $array )) {
- $array = intval ( $array );
- }
- return $array;
- }
- //整型过滤函数
- function num_check($id) {
- if (! $id) {
- die ( '参数不能为空!' );
- } //是否为空的判断
- else if (inject_check ( $id )) {
- die ( '非法参数' );
- } //注入判断
- else if (! is_numetic ( $id )) {
- die ( '非法参数' );
- }
- //数字判断
- $id = intval ( $id );
- //整型化
- return $id;
- }
- //字符过滤函数
- function str_check($str) {
- if (inject_check ( $str )) {
- die ( '非法参数' );
- }
- //注入判断
- $str = htmlspecialchars ( $str );
- //转换html
- return $str;
- }
- function search_check($str) {
- $str = str_replace ( "_", "_", $str );
- //把"_"过滤掉
- $str = str_replace ( "%", "%", $str );
- //把"%"过滤掉
- $str = htmlspecialchars ( $str );
- //转换html
- return $str;
- }
- //表单过滤函数
- function post_check($str, $min, $max) {
- if (isset ( $min ) && strlen ( $str ) < $min) {
- die ( '最少$min字节' );
- } else if (isset ( $max ) && strlen ( $str ) > $max) {
- die ( '最多$max字节' );
- }
- return stripslashes_array ( $str );
- }
- //防注入函数
- function inject_check($sql_str) {
- return eregi ( 'select|inert|update|delete|'|/*|*|../|./|UNION|into|load_file|outfile', $sql_str );
- // 进行过滤,防注入
- }
- function stripslashes_array(&$array) {
- if (is_array ( $array )) {
- foreach ( $array as $k => $v ) {
- $array [$k] = stripslashes_array ( $v );
- }
- } else if (is_string ( $array )) {
- $array = stripslashes ( $array );
- }
- return $array;
- }
- ?>
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