Summary of differences between phpHTTP_X_FORWARDED_FOR, HTTP_VIA, and REMOTE_ADDR. This article introduces the differences between HTTP_X_FORWARDED_FOR, HTTP_VIA, and REMOTE_ADDR in php when obtaining the real IP address of a user. i. no proxy
I. no proxy server is used: REMOTE_ADDR your IPHTTP_VIA has no value or does not show HTTP_X_FORWARDED_FOR has no value or does not show 2. Transparent use
I. no proxy server is used:
REMOTE_ADDR = your IP address
HTTP_VIA = no value or no
PHP Solution for obtaining the real IP address of the user client, and php Solution for obtaining the ip address
Obtaining the Client ip address is not a simple task. Because of Ip Spoofing and proxy problems, obtaining the Client IP address
Php judges ip blacklist program code instances
This article mainly introduces php code examples for judging ip blacklist programs. For more information, see
And supports Class c ip addresses. For
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"
Generally, $ _ SERVER [is used to obtain the user IP address $ _ SERVER ['remote _ ADDR,
However, if a reverse proxy is used, REMOTE_ADDR in the HTTP header is not the user's address, but the address of the previous proxy.
After my research, there
Let's use the following function to obtain the real IP address of the customer based on the judgment. Let's take a look at the php program code for obtaining the real IP address of the customer. Let's use the following function to obtain the real IP
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
This article introduces the differences between HTTP_X_FORWARDED_FOR, HTTP_VIA, and REMOTE_ADDR in php when obtaining the real IP address of a user.
I. No proxy server is used:
REMOTE_ADDR = your IP addressHTTP_VIA = no value or no
This article mainly introduces php code examples for judging ip blacklist programs. For more information, see
This article mainly introduces php code examples for judging ip blacklist programs. For more information, see
And supports Class c
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
We generally use $ _ SERVER [REMOTE_ADDR] to obtain the user's IP address. after my research, there are two methods to obtain the user's real internet IP address. Generally, $ _ SERVER ['remote _ ADDR '] is used to obtain the user IP
Php judges the ip blacklist program code instance. In this example, you can upload the file and support class c ip addresses. for example:
Ip.txt192.168211.67.188211.67.191.25The code is as follows:
The code is as follows:
/** IP address
Obtaining the client ip address is not a simple task. because of Ip spoofing and proxy problems, obtaining the client IP address authenticity will be compromised and cannot be accurate. however, we try to use a relatively complete method to obtain
Generally, $ _ server ['remote _ ADDR '] is used to obtain the user IP address,
However, if a reverse proxy is used, remote_addr in the HTTP header is not the user's address, but the address of the previous proxy.
After my research, there are
1. PHP COOKIECookie is a mechanism for storing data in a remote browser and tracking and identifying users. PHP sends cookies in the http header. Therefore, the setcookie () function must be called before other information is output to the browser,
This article describes how to call Sina api Based on ip addresses to obtain city names and convert them to pinyin. For more information, see the following functions:
1. Get the current IP address,
2. Call Sina API to obtain the current city.
3.
The implementation principle is relatively simple. You only need to obtain the user IP address and then verify whether the current IP address exists in our blacklist library. The specific example is as follows. The implementation principle is
GeoIP Introduction: What is GepIP? GeoIP is used to locate the geographical longitude and latitude of a visitor, country, region, province, city, or even Street.
GeoIP Introduction: What is GepIP? GeoIP is used to locate the geographical longitude
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