Skip to main content

Getting the Orginal IP Address - PHP function


How to get Actual IP address when the website is accessed using a proxy server?


Although there are some snippets available in web ( or you can code it yourself) which checks for the flag HTTP_X_FORWARDED_FOR in the header information.

Some example snippets:

################################################

FUNCTION #1

function GetUserIP() {

if (isset($_SERVER)) {

if (isset($_SERVER["HTTP_X_FORWARDED_FOR"]))
return $_SERVER["HTTP_X_FORWARDED_FOR"];

if (isset($_SERVER["HTTP_CLIENT_IP"]))
return $_SERVER["HTTP_CLIENT_IP"];

return $_SERVER["REMOTE_ADDR"];
}

if (getenv('HTTP_X_FORWARDED_FOR'))
return getenv('HTTP_X_FORWARDED_FOR');

if (getenv('HTTP_CLIENT_IP'))
return getenv('HTTP_CLIENT_IP');

return getenv('REMOTE_ADDR');
}




FUNCTION #2

function get_real_IP_address()
{
if (!empty($_SERVER['HTTP_CLIENT_IP'])) //check ip from share internet
{
$ip=$_SERVER['HTTP_CLIENT_IP'];
}
elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) //to check ip is pass from proxy
{
$ip=$_SERVER['HTTP_X_FORWARDED_FOR'];
}
else
{
$ip=$_SERVER['REMOTE_ADDR'];
}
return $ip;
}

################################################





 both the functions checks for the value of server value HTTP_X_FORWARDED_FOR .. if it is set then the IP address value is taken from that, else it take the value of $_SERVER['REMOTE_ADDR']

You can see that both functions above does the same operation to determine the actual IP address of a web request through a proxy.
Labels:

Comments

Post a Comment

Popular posts from this blog

Strange problem occured while trying to create a CSV file using PHP Script - The file is not seen on FTP but can download using file's absolute path url

Strange problem occured while trying to create a CSV file - The file is not seen on FTP but can download using file's absolute path url Last day I came across a strange problem when I tried to create a csv file on therver using a PHP script. the script was simply writing a given content as a csv file. The file will be created runtime. What happened was, The script executed fine, file handler for new file was created and contents was wrote into the file using fwrite and it returned the number of bytes that was written.
Post a Comment
Read more

How to get the Query string of a URL using the Javascript (JS)?

JS function get the Query string of a URL or value of each parameter using the Javascript(JS)? If you want to get your current page's url var my_url=document.location; to get the query string part of the url use like this: var my_qry_str= location.search; this will return the part of the url starting from "?" following by query string Lets assume that your current page url is http://www.crozoom.com/2013/page.html?qry1=A&qry2=B then the location.search function will return " ?qry1=A&qry2=B " to exclue "?", do like this:
Read more


Urgent Openings for PHP trainees, Andriod / IOS developers and PHP developers in Kochi Trivandrum Calicut and Bangalore. Please Send Your updated resumes to recruit.vo@gmail.com   Read more »
Member
Search This Blog