How do I remove the last part of every line in notepad++?

I know this can be done in notepad++, but I'm not finding the right replace syntax.

I want to remove the last part of this sentence, starting from ?:

http://sportnaslava.info/wiki/index.php?title=User:CisBlakeman861

so that it becomes:

http://sportnaslava.info/wiki/index.php

The regexp is \?.*$

\? mean question mark itself
.* mean everything else
$ means the end of line.

So we search something starting with question mark and lasts to the end of line. Don't forget to set "search mode" to "regular expression"

http://lunar.earth.northwestern.edu/mediawiki/index.php/Limitless_It_the_film_high_quality
http://sportnaslava.info/wiki/index.php?title=User:CisBlakeman861

Using those examples, it would be better to use something like:

index\.php.*$

Then replace with:

index.php

That should find everything after (and including) index.php, and replace it with just index.php.

http://lunar.earth.northwestern.edu/mediawiki/index.php
http://sportnaslava.info/wiki/index.php