I have the following string as an example

xxx<pre>xxx<www>xxx<strong>xxx

In my case "pre" is allowed and "strong" as well. But "www" is not allowed.

I have tried just for test to finde one exception with:

<(?!strong)>

But did not bring a hit!

At least I need to define in the regex all allowed patterns (there are not many in my case) and it should bring a hit if some not allowed pattern is found

Can someone help me on this?

Regards Kallewirsch

In reply to perlre inverse check for several patterns by averlon

Title:
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