How to remove empty parameter or parameters anywhere in URL by .htaccess?

Question

Empty parameters that I mean can be anywhere in URL each time different place, each time with different name, each time on different php page e.g :

http://www.example.com/AnyPHPpageHere.php?parameter1=7&parameter2=&parameter3=blue&parameter4=

to the form:

 http://www.example.com/AnyPHPpageHere.php?parameter1=7&parameter3=blue

So how to do it via .htaccess?

Answer 1

You can use this URL to remove any one or more empty parameters from anywhere in URLs:

RewriteEngine On

RewriteCond %{QUERY_STRING} ^(.+?&)?[^=]+=(?:&(.*))?$
RewriteRule ^ %{REQUEST_URI}?%1%2 [R=302,L,NE]

Answer 2

Try :

RewriteEngine on


RewriteCond %{THE_REQUEST} /AnyPHPpageHere\.php\?product=7&keyword=&color=blue&city= [NC]
RewriteRule ^ /AnyPHPpageHere.php?product=7&color=blue [NC,L,R=302]

If values of querystring are dynmic, you can use regex catpure groups :

RewriteEngine on


RewriteCond %{THE_REQUEST} /AnyPHPpageHere\.php\?product=([^&]+)&keyword=&color=([^&]+)&city= [NC]
RewriteRule ^ /AnyPHPpageHere.php?product=%1&color=%2 [NC,L,R=302]