How to pull a IP out of a string using preg_match in PHP:?

Asked Jan 07 '21 at 01:17

Active Jan 07 '21 at 01:17

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I have a log file which I want to pull IP's out of. I have tried this using preg_match() but it never finds a match. Here is my attempt:

$str = 'Jan  7 01:11:58 vps.... sshd[14799]: Disconnected from authenticating user root 11.22.333.444 port 52636 [preauth]';

if (preg_match('/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/', $str, $ip_matches)) {
    var_dump($ip_matches);
}

Could anyone point me in the right direction?

asked Jan 07 '21 at 01:17

Jaquarh

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You can't use `^` and `$` when you are searching for a substring because they match the start and end of the string respectively and your string is not just an ip address. Try this `/\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/` instead. – bassxzero Jan 07 '21 at 01:20
@bassxzero this fixed it! if you post an answer, ill be sure to mark it. Thanks so much! – Jaquarh Jan 07 '21 at 01:28
127.000.000.001 is not an IP address. – Gerard H. Pille Jan 07 '21 at 01:30
@jaquarh This question was closed as a duplicate so I can't post an answer. – bassxzero Jan 07 '21 at 01:31

How to pull a IP out of a string using preg_match in PHP:?

0 Answers0