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Author Topic: URL Redirect Rewrite Using The .htaccess File  (Read 3061 times)

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sachinj

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URL Redirect Rewrite Using The .htaccess File
« on: February 13, 2018, 08:38:07 am »
URL Redirect Rewrite Using The .htaccess File

Your primary .htaccess file is located in your public_html folder.

Redirecting to or from WWW

 Create a 301 redirect forcing all http requests to use either www.example.com or example.com:

    Example 1 - Redirect example.com to www.example.com:

 
Code: [Select]
  RewriteEngine On
            RewriteCond %{HTTP_HOST} !^www.example.com$ [NC]
            RewriteRule ^(.*)$ http://www.example.com/$1 [L,R=301]
    Example 2 - Redirect www.example.com to example.com:

   
Code: [Select]
RewriteEngine on
            RewriteCond %{HTTP_HOST} ^www\.example\.com$
            RewriteRule ^/?$ "http\:\/\/example\.com\/" [R=301,L]

Explanation of this .htaccess 301 redirect:

Let's have a look at the example 1 - Redirect example.com to www.example.com. The first line tells apache to start the rewrite module. The next line:

Code: [Select]
RewriteCond %{HTTP_HOST} !^www.example.com$ [NC]
specifies that the next rule only fires when the http host (that means the domain of the queried url) is not (- specified with the "!") www.example.com.

The $ means that the host ends with www.example.com - and the result is that all pages from www.example.com will trigger the following rewrite rule. Combined with the inversive "!" is the result every host that is not www.example.com will be redirected to this domain.

The [NC] specifies that the http host is case insensitive. The escapes the "." - because this is a special character (normally, the dot (.) means that one character is unspecified).

The final line describes the action that should be executed:

Code: [Select]
RewriteRule ^(.*)$ http://www.example.com/$1 [L,R=301]
The ^(.*)$ is a little magic trick. Can you remember the meaning of the dot? If not, this can be any character(but only one). So .* means that you can have a lot of characters, not only one. This is what we need because ^(.*)$ contains the requested url, without the domain.

The next part http://www.example.com/$1 describes the target of the rewrite rule. This is our "final" used domain name, where $1 contains the content of the (.*).

The next part is also important, since it does the 301 redirect for us automatically: [L,R=301]. L means this is the last rule in this run. After this rewrite the webserver will return a result. The R=301 means that the webserver returns a 301 moved permanently to the requesting browser or search engine.

Redirect to example.com/index.php

You have a website with the name example.com and you want to redirect all incoming urls that are going to example.com/ to example.com/index.php

Code: [Select]
RewriteEngine On
        RewriteCond %{HTTP_HOST} ^example.com$
        RewriteRule ^$ http://example.com/index.php [L,R=301]

Explanation of this .htaccess 301 redirect:

What does this code above do? Let's have a look at Example 1 - Redirect example.com to www.example.com. The first line starts the rewrite module. The next line:

Code: [Select]
RewriteCond %{HTTP_HOST} !www.example.com$
specifies that the next rule only fires when the http host (that means the domain of the queried url) is not (- specified with the "!") www.example.com.

The $ means that the host ends with www.example.com - and the result is that all pages from example.com will trigger the following rewrite rule. Combined with the inversive "!" is the result every host that is not www.example.com will be redirected to this domain.

The [NC] specifies that the http host is case insensitive. The escapes the "." - because this is a special character (normally, the dot (.) means that one character is unspecified).

The final line describes the action that should be executed:

Code: [Select]
RewriteRule ^(.*)$ http://www.example.com/$1 [L,R=301].
The ^(.*)$ is a little magic trick. Remember the meaning of the dot? If not, this can be any character(but only one). The .* means that you can have a lot of characters, not only one. This is what was intended. ^(.*)$ contains the requested url, without the domain.

The next part http://www.example.com/$1 [L,R=301] describes the target of the rewrite rule -this is the "final" used domain name, where $1 contains the content of the (.*).

The next part is also important, since it does the 301 redirect for us automatically: [L,R=301]. L means this is the last rule in this run. After this rewrite the webserver will return a result. The R=301 means that the webserver returns a 301 moved permanently to the requesting browser or search engine.

Redirect visitors to a new site

You have an old website that is accessible under oldexample.com and you have a new website that is accessible under newexample.com. Copying the content of the old website to the new website is the first step - but what comes after that? You should do a 301 moved permanently redirect from the old domain to the new domain - which is easy and has some advantages:

    Users will automatically be redirected to the new domain - you do not have to inform them.
    Search engines will be redirected to the new domain and all related information will be moved to the new domain (but this might take some time).
    Google's PageRank â„¢ will be transfered to the new domain, as well as other internal information that is being used to set the position of pages in the search engine result pages (serp's) - like TrustRank .

Create a 301 redirect for all http requests that are going to the old domain.

    Example 1 - Redirect from oldexample.com to www.newexample.com:

 
Code: [Select]
RewriteEngine On
            RewriteCond %{HTTP_HOST} !oldexample.com$ [NC]
            RewriteRule ^(.*)$ http://www.newexample.com/$1 [L,R=301]
    This is useful when you use www.newexample.com as your new domain name (see also this article about redirecting www and non-www domains). If not - use the code of example 2.

    Example 2 - Redirect from oldexample.com to newexample.com:

   
Code: [Select]
RewriteEngine On
            RewriteBase /
            RewriteCond %{HTTP_HOST} !oldexample.com$ [NC]
            RewriteRule ^(.*)$ http://newexample.com/$1 [L,R=301]


« Last Edit: February 13, 2018, 08:51:50 am by sachinj »