Is there any way to make rule allow only example 1 and 3 and not all 4 of them?
/^(en\/|)([\d]{1,3})([-])(.+?)([\/])$/
examples:
- 12-blog/
- 12-blog/blog2/
- en/12-blog/
- en/12-blog/blog2/
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1 Answer
You might use an optional part for en/ followed by match 1-3 digits, - and match not a / 1+ times using a negated character class.
Note that you can omit the square brackets for [\d], [-] and [\/]. If you choose a different delimiter than / you don't have to escape the forward slash.
^(?:en/)?\d{1,3}-[^/]+/$
In parts
^Start of string(?:en/)?Optionally matchen/\d{1,3}Match 1-3 digits-Match literally[^/]+/Match 1+ times any char except/$End of string
