php image file download file anti-hotlink setting method

Home

Backend Development

PHP Tutorial

php image file download file anti-hotlink setting method_PHP tutorial

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

Jul 13, 2016 pm 05:10 PM

h php server download use Method picture exist document method of set up chain

The simplest way to prevent hotlinking in PHP is to use PHP's $_SERVER['HTTP_REFERER'] function to operate. However, this method is unreliable. We will eventually need to use apache and iis to operate. Below I Shared introduction, friends in need can refer to it.

php anti hotlink

The code is as follows

代码如下	复制代码
session_start(); session_register(‘check’); $_SESSION[‘check’]=true; ?>

Copy code

代码如下

复制代码

session_start();
$refs = parse_url($_SERVER['HTTP_REFERER']); //分解参考网页资讯
//检查首页session及来源主机是否相同
if(!($_SESSION['check']) || $refs['host'] != $_SERVER['HTTP_HOST'])
exit;

session_start();

session_register(‘check’);

$_SESSION[‘check’]=true;

Check the session variable to determine whether to visit the homepage. And check whether his source web page reference (HTTP_REFERER) comes from a web page on the local website.

Here’s how:

The code is as follows

代码如下	复制代码
SetEnvIfNoCase Referer "^" local_ref=1 Order Allow,Deny Allow from env=local_ref

Copy code

代码如下	复制代码
RewriteEngine on RewriteCond %{HTTP_REFERER} !^$ RewriteCond %{HTTP_REFERER} !^http://(www.)?hzhuti.com /.*$ [NC] RewriteRule .(gif\|jpg)$ abc.gif [R,L] DocumentRoot "/usr/local/apache/htdocs" #设置存放站点html文件的目录。 Options FollowSymLinks AllowOverride None

session_start();

$refs = parse_url($_SERVER['HTTP_REFERER']); //Decompose reference web page information //Check whether the homepage session and source host are the same if(!($_SESSION['check']) || $refs['host'] != $_SERVER['HTTP_HOST'])

exit;

代码如下	复制代码
[ISAPI_Rewrite] # 3600 = 1 hour CacheClockRate 3600 RepeatLimit 32 # Protect httpd.ini and httpd.parse.errors files # from accessing through HTTP RewriteCond Host: (.+) RewriteCond Referer: (?!http://1.). RewriteRule .*.(?:gif\|jpg\|png\|bmp) /force.gif [I,O]

Note: This can only be used to prevent hotlinking. If you know a little bit, you can crack it. Use the server to set up PHP anti-theft connection apache anti-hotlink Modify httpd.conf

The code is as follows

Copy code

SetEnvIfNoCase Referer "^" local_ref=1 Order Allow,Deny Allow from env=local_ref If you want to display a "hot linking prohibited" picture, we can use mod_rewrite to achieve this. First, when installing apache, add the --enable-rewrite parameter to load the mod_rewrite module. Assuming that the "No Hotlinking" image is abc.gif, we can configure it in httpd.conf like this:

The code is as follows

Copy code

RewriteEngine on RewriteCond %{HTTP_REFERER} !^$ RewriteCond %{HTTP_REFERER} !^http://(www.)?hzhuti.com /.*$ [NC] RewriteRule .(gif|jpg)$ abc.gif [R,L] DocumentRoot "/usr/local/apache/htdocs" #Set the directory where the site's html files are stored. Options FollowSymLinks AllowOverride None iis anti-hotlink Select c:RewriteRewrite.dll to execute the file httpd.ini is the configuration file Image hotlink protection code

The code is as follows

Copy code

[ISAPI_Rewrite] # 3600 = 1 hour CacheClockRate 3600 RepeatLimit 32 # Protect httpd.ini and httpd.parse.errors files # from accessing through HTTP RewriteCond Host: (.+) RewriteCond Referer: (?!http://1.*).* RewriteRule .*.(?:gif|jpg|png|bmp) /force.gif [I,O]

Statement of this Website

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

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

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)

3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

R.E.P.O. Best Graphic Settings

3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Assassin's Creed Shadows: Seashell Riddle Solution

2 weeks ago By DDD

R.E.P.O. How to Fix Audio if You Can't Hear Anyone

3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

WWE 2K25: How To Unlock Everything In MyRise

3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

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

Where is the login entrance for gmail email?

7468

CakePHP Tutorial

1376

What is the format of the account name of steam

win11 activation key permanent

nyt connections hints and answers

Related knowledge

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

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

CakePHP Date and Time Sep 10, 2024 pm 05:27 PM

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

Discuss CakePHP Sep 10, 2024 pm 05:28 PM

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

CakePHP File upload Sep 10, 2024 pm 05:27 PM

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

CakePHP Creating Validators Sep 10, 2024 pm 05:26 PM

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

How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

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

CakePHP Quick Guide Sep 10, 2024 pm 05:27 PM

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.

How do you parse and process HTML/XML in PHP? Feb 07, 2025 am 11:57 AM

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

See all articles