将先前存在的URL重定向到Wordpress永久链接URL

Question

I previously had a static website with a page such as www.example.com/pages?id=123

I remade that website into a wordpress site with permalinks such as: www.example.com/Iam-a-url

Now here is my problem, my existing users are visiting www.example.com/pages?id=123 and get a page not found error(because of course it doesnt exist). How do I go about redirecting them to www.example.com/Iam-a-url

Answer 1

Place this into your functions.php

function _redir_old_site(){
    if( (stripos($_SERVER['REQUEST_URI'], 'pages?id=') !== FALSE) ){
        //you can set the redirect based on the id
        $oldID = $_GET['id'];
        //set default page id
        $nowID = 5;
        switch( $oldID ){
           case '123':
                //the page id now
                $nowID = 46;
              break;
           //....and so on.....
        }
        header("location:". get_permalink($nowID) );
        exit;
    }
}

add_action('template_redirect', '_redir_old_site', 1);

good luck! :)