URL Path exclude certain sting in regular expression for rewrite rule

Question

How to modify below regular expression for any path start with /a/ , but excluding string /dk/

(^/a/(.*)$)

so that /a/remove can match, but /a/dk/ remove won't

Answer 1

(^(?!.*(?:/dk/|/fl/))/a/(.*)$)

您可以为此添加lookahead 。