Wordpress - Change author permalink
you need 3 simple functions and hooks
first change the author base:
//change author/username base to users/userID
function change_author_permalinks() {
global $wp_rewrite;
// Change the value of the author permalink base to whatever you want here
$wp_rewrite->author_base = 'users';
$wp_rewrite->flush_rules();
}
add_action('init','change_author_permalinks');
then add users to query_vars:
add_filter('query_vars', 'users_query_vars');
function users_query_vars($vars) {
// add lid to the valid list of variables
$new_vars = array('users');
$vars = $new_vars + $vars;
return $vars;
}
then add the new rewrite rule:
function user_rewrite_rules( $wp_rewrite ) {
$newrules = array();
$new_rules['users/(\d*)$'] = 'index.php?author=$matches[1]';
$wp_rewrite->rules = $new_rules + $wp_rewrite->rules;
}
add_filter('generate_rewrite_rules','user_rewrite_rules');
Now if you don't know how to use this, just copy all of the code and paste in your theme's functions.php file.