Removing duplicate slashes in URL via .htaccess or PHP

Question

I'm trying to remove duplicate slashes from URLs. The following .htaccess rule:

RewriteRule ^(.+)//+(.*)$ $1/$2 [L,NC,R=301]

do NOT work for me on a URL such as the following:

http://www.mp7.org/?site=69.com\\\\\\\\\\\\\\\\

The .htaccess file

#### mod_rewrite in use
Options +FollowSymlinks
RewriteEngine On

Why would a regexp that removes double slashes remove double backslashes? — Niels Keurentjes, Apr 21 '13 at 12:33

score 0 · Answer 1 · edited May 23 '17 at 12:18

0

This rule won't work for backslashes. You must add a similar rule with backslashes

RewriteRule ^(.+)\\\\+(.*)$ $1\\$2 [L,R]

If you want to replace backslashes with (forward) slashes, use this rule instead

RewriteRule ^(.+)\\\\+(.*)$ $1/$2 [L,R]

And to remove all back-/slashes at the end of the request

RewriteRule ^(.*?)[/\\]+$ $1 [L,R]

and the same when it is a query string

RewriteCond %{QUERY_STRING} ^(.*=.*?)[/\\]+$
RewriteRule ^.*$ $0?%1 [R,L,QSA]

When everything works as you expect, you can change R to R=301.

Never test with 301 enabled, see this answer Tips for debugging .htaccess rewrite rules for details.

edited May 23 '17 at 12:18

Community

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answered Apr 21 '13 at 12:38

Olaf Dietsche

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RewriteRule ^(.+)\\\\+(.*)$ $1\$2 [L,R] ... Do not remove the backslashes – user6509 Apr 21 '13 at 12:44
@user6509 Do you want to remove or replace the backslashes? I also forgot an additional backslash. – Olaf Dietsche Apr 21 '13 at 12:49
I want to remove completely ALL slashes or backslashes at the end of the URL – user6509 Apr 21 '13 at 13:04
RewriteRule ^(.*)[/\\]+$ $1 [L,R] do NOT work. The URL is still accessible the way it was: http://www.mp7.org/?site=69.com\\\\\\\\\\\\\\\\ – user6509 Apr 21 '13 at 13:15
@user6509 I haven't realized, it is a query string. – Olaf Dietsche Apr 21 '13 at 15:12

score 0 · Answer 2 · answered Jun 08 '13 at 12:50

This is because of IIS server, and mainly almost certainly your site is urbanized in .Net .asp or . aspx You need to put into service one miniature script, when your server be given http or https demand it must Lcase(URL). If there are not a lot of pages, you can rename all within lowercase, modify all inner linking of WebPages to lowercase and after that appeal URL removal request in Google webmaster tools.

how to remove duplicate urls

Removing duplicate slashes in URL via .htaccess or PHP

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