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Use of http_x_forwarded_for and remote_addr in PHP1. remote_addr: IP address of the user's computer browsing the current page2. http_x_forwarded_for: view the gateway of the user's computer on the current page3. http_client_ip: Client IP AddressUse $

This article mainly shares nine classic PHP code snippets, which are very practical and frequently used functions. we recommend them to you. 1. check whether the email has been read When you send an email, you may want to know whether the email has

This article mainly introduces nine Practical PHP code snippets, this article explains how to check whether emails have been read, extract keywords from webpages, search for all links on the page, and automatically convert URLs to clickable

PHP: obtain the client IP address 1. REMOTE_ADDR: view the IP address of the user's computer on the current page 2. HTTP_X_FORWARDED_FOR: view the gateway of the user's computer on the current page 3. HTTP_CLIENT_IP: client ip address Use $ _

: This article mainly introduces the significance of variables related to PHP ---- $ _ SERVER ---. For more information about PHP tutorials, see. These are also found online, hoping to help you. $ _ SERVER ['remote _ port'] // PORT. $ _ SERVER

This article mainly introduces nine Practical PHP code snippets, this article explains how to check whether emails have been read, extract keywords from webpages, search for all links on the page, and automatically convert URLs to clickable

Php obtains client information & lt ;? Php *** class for obtaining visitor information: Language, browser, operating system, IP address, geographic location, ISP. * Date: * author: www.itwhy.org * usage: $ objnewclass_guest_info; $ obj-& gt; GetLang

After a long history of pseudo-static exploration, we found that the following methods can be used to achieve pseudo-static SEO and reduce server pressure.> Access the PHP page > Last-Modified is generated based on the Content Update Time, And etag

This article mainly introduces the analysis and implementation code for PHP to obtain the real IP address of the client. it focuses on several cases of interference in obtaining the real IP address, for more information, see $ _ SERVER ["REMOTE_ADDR"

This is the php code used by uchome. when you are learning programming, you can see some mature cms systems at that time, provided that you are familiar with the program, otherwise, the study will be dispelled. UCHOME code is still very good. learn

The security method HTTP_X_FORWARDED_FOR for obtaining user IP addresses on the web site. The code for copying the getIP function after security filtering is as follows: functiongetIP () {$ realip; set the default value if (isset ($ _ SERVER [HTTP_X_

Some special characters in php are usually used to filter secure data submission or sensitive words. The following describes some common examples for your reference. Some special characters in php are usually used to filter secure data submission or

Analysis and Implementation Code for PHP to obtain the real IP address of the client, and analysis of 5 Cases $ _ SERVER ["REMOTE_ADDR"] is often used to obtain the Client IP address in PHP.(1) If the client is accessed by a proxy server, the IP

The principle is to obtain the current ip address based on the IP Address Provided by the user and convert it to a digital IP address. The calculation is based on the ip address, a, B, and c, according to the comparison, the "OK" principle is based

The Code is as follows:Copy codeThe Code is as follows:/*[Discuz!] (C) 2001-2009 Comsenz Inc.This is NOT a freeware, use is subject to license terms$ Id: security. inc. php 16688 06: 41: 07Z cnteacher $*/// If IN_DISCUZ is not set, an access error

Php obtains the visitor's real IP address. Php obtains the visitor's real IP address. when it comes to me, we need to obtain the real IP address of the user, such as log records, geographic location, user information, and website data analysis, in

Php obtains the browser name version instance program. You can directly use HTTP_USER_AGENT to obtain the browser version in php. However, you need to determine the version of the browser, example 1 the code below is used to obtain the browser

How can I determine whether a mobile phone is used for access or a computer? Currently, there are three opinions on the Internet: one is the User-Agent sent based on the browser, but this method obviously does not work. although some people list the

Nowadays, there are more and more people using mobile phones to access the internet. Therefore, mobile phone users bring a considerable amount of traffic to the website. However, websites that are only suitable for PC-end websites and want to access

In fact, simply use the variable $ _ SERVER [HTTP_RANGE] to get the range of the file requested by the user, and then the program controls the output of the file. For example, the first request for a file is from 0 to 999 bytes, the second request