Regex - Invalid target for quantifier

Question

I have this simple regular expression, and I'm testing it on RegExr.

^(?<name>[a-z0-9\-]+)

It should give me an associative array with a name field that matches strings that contains a-z and 0-9.

But I get the ? character underlined in red with that error.

Why?

Answer 1

Well unfortunately, RegExr v2 is dependent on the JS RegExp implementation, which does not support named capture groups. See your working regular expression at regular expressions 101

Answer 2

Try another regex site:

^(?<name>[a-z0-9\-]+)

Debuggex Demo