php中$_GET与$_POST过滤sql注入的方法,_get_post
本文实例讲述了php中$_GET与$_POST过滤sql注入的方法,分享给大家供大家参考。具体分析如下:
此函数只能过滤一些敏感的sql命令了,像id=1这种大家还是需要自己简单过滤了。
主要实现代码如下:
复制代码 代码如下:
if (!get_magic_quotes_gpc())
{
if (!empty($_GET))
{
$_GET = addslashes_deep($_GET);
}
if (!empty($_POST))
{
$_POST = addslashes_deep($_POST);
}
$_COOKIE = addslashes_deep($_COOKIE);
$_REQUEST = addslashes_deep($_REQUEST);
}
function addslashes_deep($value)
{
if (empty($value))
{
return $value;
}
else
{
return is_array($value) ? array_map('addslashes_deep', $value) : addslashes($value);
}
}
希望本文所述对大家的PHP程序设计有所帮助。
我在PHP4环境下写了一个防SQL注入的代码,经过实际使用在PHP5下也兼容,欢迎大家使用修改,使用。
代码如下:
/*
sqlin 防注入类
*/
class sqlin
{
//dowith_sql($value)
function dowith_sql($str)
{
$str = str_replace("and","",$str);
$str = str_replace("execute","",$str);
$str = str_replace("update","",$str);
$str = str_replace("count","",$str);
$str = str_replace("chr","",$str);
$str = str_replace("mid","",$str);
$str = str_replace("master","",$str);
$str = str_replace("truncate","",$str);
$str = str_replace("char","",$str);
$str = str_replace("declare","",$str);
$str = str_replace("select","",$str);
$str = str_replace("create","",$str);
$str = str_replace("delete","",$str);
$str = str_replace("insert","",$str);
$str = str_replace("'","",$str);
$str = str_replace(""","",$str);
$str = str_replace(" ","",$str);
$str = str_replace("or","",$str);
$str = str_replace("=","",$str);
$str = str_replace("%20","",$str);
//echo $str;
return $str;
}
//aticle()防SQL注入函数
function sqlin()
{
foreach ($_GET as $key=>$value)
{
$_GE......余下全文>>
用着个过滤传过来的值,这两个用之前先判断是否开启了
get_magic_quotes_gpc();没有开启的话用以下两个都可以过滤
mysql_real_escape_string();一般用于sql语句
addslashes();
例如:
if (!get_magic_quotes_gpc()) {
$lastname = addslashes($_POST[‘lastname’]);
//或者mysql_real_escape_string($_POST[‘lastname’])
} else {
$lastname = $_POST[‘lastname’];
}

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

SublimeText3 English version
Recommended: Win version, supports code prompts!

SublimeText3 Chinese version
Chinese version, very easy to use

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software