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regexposix

Regex for detecting a query string

I'm trying to use regex for testing a URL.

  • accepted cases: 

    www.mystite.com/whatever/?bla=dfgsd&page=test 
www.mystite.com/whatever/?bla=dfgsd&page=test&
www.mystite.com/whatever/?bla=dfgsd&page=test&hello=bla 
www.mystite.com/whatever/?page=test&hello=bla

  • rejected:

    www.mystite.com/whatever/?hello=bla&page=testfff 
www.mystite.com/whatever/?page=testfff&hello=bla - NOT good

because misses &page=test&, page=test& or &page=test

That's what I tried, and it doesn't work:

([^&]+)([page=test])([^&]+)

You can ignore the domain and sub folder, what I'm trying to check is only after the question mark

Solution

  • After reading the question for the 3rd time I think I now get what you are asking for:

    &?page=test($|&)

    This matches all occurences of "page=test" with optional "&" at the start. At the end there needs to be either an "&" (optionally followed by other characters) or nothing (end of string).

    Does this solve your problem?