Exact an IP address out of a Host URL

Question

I have a host = http://172.19.242.32:1234/

My goal is to grab the IP only = 172.19.242.32

I tried

$ip = trim($host,'http://');
$ip = str_replace("/", "",$ip);
$ip = explode(":",$ip);
$ip = $ip[0];

I got my IP as expected, but I can't do it this way anymore because it will mess up the IPv6 format.

What is the alternative way? Any suggestion?

[`parse_url()`](http://php.net/manual/en/function.parse-url.php) — Alex Howansky, Apr 07 '17 at 15:51
Possible duplicate of [Parsing Domain From URL In PHP](https://stackoverflow.com/questions/276516/parsing-domain-from-url-in-php) — mickmackusa, Aug 04 '17 at 04:54

score 4 · Accepted Answer · answered Apr 07 '17 at 15:56

4

Use parse_url(): You can ommit PHP_URL_HOST to return an array of all components.

<?php
$host = 'http://172.19.242.32:1234/';
echo parse_url($host, PHP_URL_HOST);

returns

172.19.242.32

https://eval.in/770497

answered Apr 07 '17 at 15:56

alistaircol

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It returns ``[fd8c::11]``. – alistaircol Apr 07 '17 at 16:02
Awesome, then it is the right answer. I will accept it soon. – code-8 Apr 07 '17 at 16:02

score 1 · Answer 2 · answered Apr 07 '17 at 15:59

1

$url="http://172.19.242.32:1234/";
$regexIpAddress = '/\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}(?:\/\d{2})?/';        
preg_match_all($regexIpAddress, $url, $ip_match);
var_dump($ip_match[0]);

This reg expression match function will extract ip address from any string.

answered Apr 07 '17 at 15:59

Nick Jang

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Too complicated, Will this work with IPv6 ?? Ex. host=http://[fd8c::11]:1234/ ? – code-8 Apr 07 '17 at 16:02
This is IPv4 regex match. – Nick Jang Apr 09 '17 at 02:44

score -2 · Answer 3 · answered Apr 07 '17 at 15:54

-2

The right way would be $_SERVER['SERVER_ADDR'] I think? It should return just the IP

answered Apr 07 '17 at 15:54

junkfoodjunkie

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This will return the IP address of the server under which the current script is executing. OP asked to get IP address from a certain string. – Tom Udding Apr 07 '17 at 15:58
He said he had a host, I interpreted that as his own host, where the script is run. – junkfoodjunkie Apr 07 '17 at 16:00

Exact an IP address out of a Host URL

3 Answers3