Mod_rewrite: Question mark in RewriteRule

Question

I am dealing with an API that is accessing an URL on my website and adding "/?parameter=value" to the url. I want my htaccess to handle this request and only keep the parameter's value. I want to keep it simple.

RewriteRule ^my-url/\?parameter=(.*)$ controller.php?parameter=$1

RewriteRule ^my-url/.parameter=(.*)$ controller.php?parameter=$1

Both of the above does not work. There seem to be an issue handling the question mark.

[Similar question](https://stackoverflow.com/q/18543194/57091) — robsch, Jan 15 '19 at 13:57

score 3 · Accepted Answer · answered Mar 27 '14 at 15:49

3

You need to use a RewriteCond to match QUERY_STRING:

RewriteCond %{QUERY_STRING} ^parameter=([^&]+)
RewriteRule ^my-url/?$ controller.php?parameter=%1 [L,QSA]

answered Mar 27 '14 at 15:49

anubhava

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Anyway to do it without RewriteCond, using RewriteRule only? If not, why isn't it possible? – Peter Lur Mar 27 '14 at 15:57
It is because `RewriteRule` matches REQUEST_URI only. Anything after `?` is called query string and that can be matched ONLY using `RewriteCond`. Why do you not want to use `RewriteCond`? – anubhava Mar 27 '14 at 15:58
Thanks that make sense. One quick question: why use the flags QSA. It seems to be working with them too. – Peter Lur Mar 27 '14 at 16:04
Yes `QSA` isn't probably needed in this case. `QSA` (Query String Append) flag preserves existing query parameters while adding a new one. You can sure take it out. – anubhava Mar 27 '14 at 16:05
1

Thanks anubhava for the support. – Peter Lur Mar 27 '14 at 16:07
Is there a reason `^parameter=([^&]+)` doesn't end with a `$`? – TheKarateKid Apr 27 '18 at 21:23
Yes, that is to take care of additional parameters in this query string. – anubhava Apr 27 '18 at 21:29

Mod_rewrite: Question mark in RewriteRule

1 Answers1