如何安全过滤用户提交的数据提交到数据库
sql注入总是无孔不入(ps:' or 1=1#),该如何安全的过滤好呢(我用的php和mysql_connect)?
回复内容:
sql注入总是无孔不入(ps:' or 1=1#),该如何安全的过滤好呢(我用的php和mysql_connect)?
可以使用 mysql_real_escape_string()
对字符串进行转义,然后再放进 SQL。
$name = mysql_real_escape_string($_POST['name']); mysql_query('SELECT * FROM `users` WHERE `name` = "'.$name.'"'); //改进版。防 SQL 注入,同时屏蔽 _ 和 % 字符 function escape($str) { $str = mysql_real_escape_string($str); $str = str_replace(['_', '%'], ['\\_', '\\%'], $str); return $str; }
这里有官方介绍:http://www.php.net/manual/zh/function.mysql-real-escape-string.php
个人建议还是使用一个WEB框架,常见的WEB框架都有完善的防注入机制。
例如:
简单、快速入门的:CodeIgniter
功能更全面的:Yii (这个官网有时会被墙)
<code>select * from users where name = @name </code>
参数化查询(Parameterized Query 或 Parameterized Statement)是访问数据库时,在需要填入数值或数据的地方,使用参数 (Parameter) 来给值。
在使用参数化查询的情况下,数据库服务器不会将参数的内容视为SQL指令的一部份来处理,而是在数据库完成SQL指令的编译后,才套用参数运行,因此就算参数中含有指令,也不会被数据库运行。Access、SQL Server、MySQL、SQLite等常用数据库都支持参数化查询。

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

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

To work with date and time in cakephp4, we are going to make use of the available FrozenTime class.

To work on file upload we are going to use the form helper. Here, is an example for file upload.

CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu

One of the major changes introduced in MySQL 8.4 (the latest LTS release as of 2024) is that the "MySQL Native Password" plugin is no longer enabled by default. Further, MySQL 9.0 removes this plugin completely. This change affects PHP and other app

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

Validator can be created by adding the following two lines in the controller.

CakePHP is an open source MVC framework. It makes developing, deploying and maintaining applications much easier. CakePHP has a number of libraries to reduce the overload of most common tasks.
