Home Backend Development PHP Tutorial PHP获取用户IP代码实现

PHP获取用户IP代码实现

Jun 20, 2016 pm 01:04 PM
http ip nbsp quot server

PHP获取用户IP代码实现

获取客户端用户IP在网站中经常会需要,譬如:    

1.登陆IP:可以及时知道自己的账号是不是被盗用;    

2.投票:可以针对每个IP只能做一次投票防止刷票;    

3.统计:统计用户来源,这个是不可或缺的数据分析部分;    

4.其他。   

 所以正确获取客户端用户IP还是很重要的,下面是日常使用中获取IP的PHP代码:

/**<br />		 * 获取客户IP地址<br />		 * @return $ip<br />		 */<br />	    function getIp(){<br />	    	if(!empty($_SERVER["HTTP_CLIENT_IP"])){<br />			  $ip = $_SERVER["HTTP_CLIENT_IP"];<br />			}<br />			elseif(!empty($_SERVER["HTTP_X_FORWARDED_FOR"])){<br />			  $ip = $_SERVER["HTTP_X_FORWARDED_FOR"];<br />			}<br />			elseif(!empty($_SERVER["REMOTE_ADDR"])){<br />			  $ip = $_SERVER["REMOTE_ADDR"];<br />			}<br />			else{<br />			  $ip = "127.0.0.1";<br />			}<br />			return $ip;<br />	    }   
Copy after login
  

这边只是提供参考,大家要是有什么好的方法可以留言交流!


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

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

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

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

10 Ways to Adjust Brightness on Windows 11 10 Ways to Adjust Brightness on Windows 11 Dec 18, 2023 pm 02:21 PM

Screen brightness is an integral part of using modern computing devices, especially when you look at the screen for long periods of time. It helps you reduce eye strain, improve legibility, and view content easily and efficiently. However, depending on your settings, it can sometimes be difficult to manage brightness, especially on Windows 11 with the new UI changes. If you're having trouble adjusting brightness, here are all the ways to manage brightness on Windows 11. How to Change Brightness on Windows 11 [10 Ways Explained] Single monitor users can use the following methods to adjust brightness on Windows 11. This includes desktop systems using a single monitor as well as laptops. let's start. Method 1: Use the Action Center The Action Center is accessible

How to turn off private browsing authentication for iPhone in Safari? How to turn off private browsing authentication for iPhone in Safari? Nov 29, 2023 pm 11:21 PM

In iOS 17, Apple introduced several new privacy and security features to its mobile operating system, one of which is the ability to require two-step authentication for private browsing tabs in Safari. Here's how it works and how to turn it off. On an iPhone or iPad running iOS 17 or iPadOS 17, Apple's browser now requires Face ID/Touch ID authentication or a passcode if you have any Private Browsing tab open in Safari and then exit the session or app to access them again. In other words, if someone gets their hands on your iPhone or iPad while it's unlocked, they still won't be able to view your privacy without knowing your passcode

Win10/11 digital activation script MAS version 2.2 re-supports digital activation Win10/11 digital activation script MAS version 2.2 re-supports digital activation Oct 16, 2023 am 08:13 AM

The famous activation script MAS2.2 version supports digital activation again. The method originated from @asdcorp and the team. The MAS author calls it HWID2. Download gatherosstate.exe (not original, modified) from https://github.com/massgravel/Microsoft-Activation-Scripts, run it with parameters, and generate GenuineTicket.xml. First take a look at the original method: gatherosstate.exePfn=xxxxxxx;DownlevelGenuineState=1 and then compare with the latest method: gatheros

How to install, uninstall, and reset Windows server backup How to install, uninstall, and reset Windows server backup Mar 06, 2024 am 10:37 AM

WindowsServerBackup is a function that comes with the WindowsServer operating system, designed to help users protect important data and system configurations, and provide complete backup and recovery solutions for small, medium and enterprise-level enterprises. Only users running Server2022 and higher can use this feature. In this article, we will explain how to install, uninstall or reset WindowsServerBackup. How to Reset Windows Server Backup If you are experiencing problems with your server backup, the backup is taking too long, or you are unable to access stored files, then you may consider resetting your Windows Server backup settings. To reset Windows

Understand common application scenarios of web page redirection and understand the HTTP 301 status code Understand common application scenarios of web page redirection and understand the HTTP 301 status code Feb 18, 2024 pm 08:41 PM

Understand the meaning of HTTP 301 status code: common application scenarios of web page redirection. With the rapid development of the Internet, people's requirements for web page interaction are becoming higher and higher. In the field of web design, web page redirection is a common and important technology, implemented through the HTTP 301 status code. This article will explore the meaning of HTTP 301 status code and common application scenarios in web page redirection. HTTP301 status code refers to permanent redirect (PermanentRedirect). When the server receives the client's

What does IP mean? What does IP mean? Jan 05, 2024 pm 01:34 PM

The common meanings of IP include "IP address", "intellectual property", "unique selling point" and "independence": 1. IP address is a digital identifier used to identify and locate equipment in computer networks; 2. Intellectual property , refers to the rights and interests enjoyed by people’s intellectual creations, including patents, trademarks, copyrights, trade secrets, etc.; 3. Unique selling points are the unique characteristics of a product or service that distinguish it from competitors and attract customers; 4. Independence refers to the ability of a country or region to make independent decisions and manage itself without external control or interference.

Local IP address query Local IP address query Jan 05, 2024 pm 01:42 PM

The methods for querying the IP address of this machine are: 1. Under Windows system, open the "Start Menu" and search for "cmd" to open the command prompt, enter "ipconfig", and then press the Enter key to find a line named "IPv4 Address" , the number next to it is the IP address of the machine; 2. Under macOS system, click the Apple icon in the upper left corner of the screen, select "System Preferences", find the currently connected network in the "Network" option, and click the "Advanced" button , find the IP of the machine in the "TCP/IP" tab, etc.

HTTP 200 OK: Understand the meaning and purpose of a successful response HTTP 200 OK: Understand the meaning and purpose of a successful response Dec 26, 2023 am 10:25 AM

HTTP Status Code 200: Explore the Meaning and Purpose of Successful Responses HTTP status codes are numeric codes used to indicate the status of a server's response. Among them, status code 200 indicates that the request has been successfully processed by the server. This article will explore the specific meaning and use of HTTP status code 200. First, let us understand the classification of HTTP status codes. Status codes are divided into five categories, namely 1xx, 2xx, 3xx, 4xx and 5xx. Among them, 2xx indicates a successful response. And 200 is the most common status code in 2xx

See all articles