Recursive regex

[bubblenut]

Is it possible to do a recursive regex like in the following example?

$regex="username=[a-z0-9]{2,20}\sid=[0-9]{4,6} (referrer=[[this regex]])?";

Cheers
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[mrhappiness]

there's some recursion support built in
have look at http://www.php.net/manual/en/pcre.pattern.syntax.php#regexp.reference.recursive

btw: i din't get what you want 😕

[bubblenut]

YAY! I'm thinking it should be along the lines of

$regex="/username=[a-z0-9]{2,20}\sid=[0-9]{4,6} (referrer=\[(?R)\])?";
[code]

This is just a simple example I though up to illustrate the point. I'm actually going to be using it to dissect iptables log files. You somtimes get this near the end of a log (not sure what it means ... not my problem really) TYPE=3 CODE=3 [SRC=/*and from here on it's like another iptables log line*/]. So it just got me thinking , I wonder if recursive regex is possible.

Thanks MyHappiness, you've certainly made my world a little happier today ;)

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