detecting outside router IP in PHP

[parawizard]

im not sure how i can detect my routers OUTSIDE IP? im anyone has any ideas that would be great! cant seem to find it on php.net

im not using PEAR just reg PHP on win server

🙂

[parawizard]

there must be a way.... i have tried a few things but i really dont know what to look for! i need to find it so i can update my JS redirect for my dynamic IP

the server has to find its own OUTSIDE IP cant be found from a remote source because the source wont know a new IP 🙂

[swr]

Use google to find a web page that will tell you your IP address. In PHP, fopen() that URL and read the page. Find the IP address in the page (probably using preg_match()) and there ya go.

[swr]

Here is some code to do it:

$url = 'http://www.lawrencegoetz.com/programs/ipinfo/';
$http = fopen($url, 'r') or die('fopen() failed');
$page = '';
while (!feof($http)) {
    $page .= fread($http, 1024);
}
preg_match('/\\b(\\d{1,3}\\.\\d{1,3}\\.\\d{1,3}\\.\\d{1,3})\\b/', $page, $matches);
echo $matches[1];
                                                                                

[ksandom]

if that doesn't work, try using traceroute (under windows it's called tracert)
go into the console. It comes with XP. I don't know about the other versions.