PHP 301 Redirect Permanently


Posted on : Fri, 24th Apr 15 09:01 am (Updated on : Fri, 24th Apr 15 09:01 am) UTC
Author : Code2care
100+ votes

There are times when you may want to redirect a webpage to a particular URL permanently, this is called a 301 redirect in HTTP request/response protocol. It is also very important part of SEO (Search Engine Optimization) that your redirect are correct. 301 redirects are called as Search Engine Friendly redirects. When the bots/crawlers read the url they know that the page has been permanently moved to a new location. Lets see a code snippet for the same,

PHP 301 Redirect Code :

File : redirect-301-page.php Language : Php
<?php 
//set the 301 header
header("HTTP/1.1 301 Moved Permanently"); 

//Set the url location to the redirected page
header("Location: http://redirected-page-url.com"); 
?>


Note : If you remove the first header line the page will be redirected to the specified new location but it would be a 302 Moved Temporarily kind of redirect and not 301.


File : redirect-302-page.php Language : Php
<?php 

//This will result to 302 : Moved Temporarily redirect (should be avoided)
header("Location: http://redirected-page-url.com"); 
?>


If you read Google's Webmaster Guidelines you would see that they recommend to use 301 redirects instead of 302.

"If you need to change the URL of a page as it is shown in search engine results, we recommend that you use a server-side 301 redirect. This is the best way to ensure that users and search engines are directed to the correct page. The 301 status code means that a page has permanently moved to a new location."

- https://support.google.com/webmasters/answer/93633?hl=en


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