htaccess: Remove parameter from URL

Question

# case: leading and trailing parameters
RewriteCond %{QUERY_STRING} ^(.+)?session=[0-9a-z]+&(.+)$ [NC]
RewriteRule (.*) /$1?%1&%2 [R=301,L]

# case: leading-only, trailing-only or no additional parameters
RewriteCond %{QUERY_STRING} ^(.+)?session=[0-9a-z]+$|^osCsid=[0-9a-z]+&?(.*)$   [NC]
RewriteRule (.*) /$1?%1 [R=301,L]

URL is: https://www.test.com/test/?session=123

Shouldn't this cut off the ?session=123?

If not, how can I achieve this?

anubhava · Accepted Answer · 2016-11-04 16:29:16Z

1

You can use this rule to remove a parameter from anywhere in the query string:

RewriteCond %{QUERY_STRING} ^(.*&)?session=[^&]*(?:&(.*))?$ [NC]
RewriteRule ^ %{REQUEST_URI}?%1%2 [L,R=301,NE]

answered Nov 4, 2016 at 16:29

anubhava

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5 Comments

aeroncy Over a year ago

Nice, works. One more thing, ist it possible to remove just if the value of session begins with "\" ? I tried: RewriteCond %{QUERY_STRING} ^(.*&)?session=[^&]*(?:&(.*))?$

anubhava Over a year ago

Sorry didn't understand. Do you want to remove this parameter only if value starts with a double quote?

aeroncy Over a year ago

Almost. Want to remove the parameter if value starts with backslash

anubhava Over a year ago

You can use: RewriteCond %{QUERY_STRING} ^(.*&)?session=\\[^&]*(?:&(.*))?$ [NC]

anubhava Over a year ago

btw your question mentions session=123 which is not starting with \

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