php - .htaccess redirect to mobile and desktop in one file

Solution:

...where i can put special redirect with variable if user are desktop?

RewriteRule ^(.*)$ https://desktop.othersomesite.com/$1 [R=301,L]
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It looks like you can just put it immediately after your existing directives (that redirects to the mobile site).

something like this

<?php
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I'm not quite sure what you are trying to show here, other than perhaps trying to show the logic? But this would seem to be misleading since I don't believe you want to implement this in PHP; do you? The PHP is also invalid (crucially using the assignment operator, instead of checking for equality).

However, some notes regarding your existing directives...

RewriteCond %{QUERY_STRING} (^|&)mobile=1(&|$)
RewriteRule ^ - [CO=mobile:1:%{HTTP_HOST}]
RewriteCond %{QUERY_STRING} (^|&)mobile=0(&|$)
RewriteRule ^ - [CO=mobile:0:%{HTTP_HOST}]
RewriteCond %{QUERY_STRING} (^|&)mobile=0(&|$)
RewriteRule ^ - [S=1]
RewriteCond %{HTTP:x-wap-profile} !^$ [OR]
RewriteCond %{HTTP_USER_AGENT} "android|blackberry|ipad|iphone|ipod|iemobile|opera mobile|palmos|webos|googlebot-mobile" [NC,OR]
RewriteCond %{HTTP:Profile}       !^$
RewriteCond %{HTTP_HOST}          !^m\.
RewriteCond %{HTTP:Cookie}        !\mobile=0(;|$)
RewriteRule ^(.*)$ https://m.somesite.com/$1 [R=301,L]
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The first two rules (that set themobile cookie) can be combined into one. The third rule can be converted into a singleRewriteCond directive on the main rule that follows.

There is aHTTP_COOKIE server variable, so I would tend to use this instead ofHTTP:Cookie (to access the header directly). The\m in the last CondPattern looks like an error - although this still matches a literalm, so it "works". However, this also matches any cookie whose name ends with "mobile", not justmobile. The regex needs to something like(^|;|\s)mobile=0(;|$) instead, since cookie name=value pairs are often delimited by;<space>.

So, bringing these points together we have:

# Set mobile cookie if mobile present in query string
RewriteCond %{QUERY_STRING} (?:^|&)mobile=(0|1)(?:&|$)
RewriteRule ^ - [CO=mobile:%1:%{HTTP_HOST}]

# Mobile
RewriteCond %{HTTP:x-wap-profile} !^$ [OR]
RewriteCond %{HTTP_USER_AGENT} "android|blackberry|ipad|iphone|ipod|iemobile|opera mobile|palmos|webos|googlebot-mobile" [NC,OR]
RewriteCond %{HTTP:Profile}       !^$
RewriteCond %{HTTP_HOST}          !^m\.
RewriteCond %{QUERY_STRING}       !(^|&)mobile=0(&|$)
RewriteCond %{HTTP_COOKIE}        !(^|;|\s)mobile=0(;|$)
RewriteRule (.*) https://m.somesite.com/$1 [R=301,L]

# Else Desktop
RewriteRule (.*) https://desktop.othersomesite.com/$1 [R=301,L]
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Also, since you are potentially basing the redirect on theUser-Agent andCookie headers, these should also be added to theVary header to ensure proper caching from any intermediaries. For example, add the following after the above:

Header always merge Vary "User-Agent, Cookie"
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