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PHP: Permanent 301 Redirect - Basic
If the URL of a page is changed, a 301 permanent redirect should be created to point visitors to the new location and most importantly: help preserve existing search engine ranking.
301's are usually setup via the .htaccess file, but you can also use a .php script
code snippet:
<?php
//important: this defines the redirect as a 301
header( "HTTP/1.1 301 Moved Permanently" );
header( "Status: 301 Moved Permanently" );
//redirect to the new location
header( "Location: http://www.example.com/mynewpage.html" );
exit();
?>
notes:
In this example, the php script is saved in the location of the old url, for example www.example.com/oldpage.php. Any visitors to this URL will be redirected to www.example.com/mynewpage.html
This is a simple example, but with some tweaking the same approach will work with dynamic urls.
