PHP 301 Redirect Permanently

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 a very important part of SEO (Search Engine Optimization) that your redirect is 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. Let's see a code snippet for the same,

PHP 301 Redirect Code :
//set the 301 header
header("HTTP/1.1 301 Moved Permanently"); 

//Set the url location to the redirected page

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.


//This will result to 302 : Moved Temporarily redirect (should be avoided)

If you read Google's Webmaster Guidelines you would see that they recommend using 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."


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