copy fields value to another field

Question

I've make a custom field named "Phone" using buddypress xprofile plugin, but this field cannot be searched by Wordpress primitive searching engine, I found another field which is "user_url" this field is searchable.

The solution I'm looking for : (either one)

1. Make "Phone" field searchable.
2. hook "Phone" field's value to the "user_url" when user registering. Using "user_url" make the "phone" field's value become searchable.
3. or setup a cronjob sync both fields hourly.

or others genius idea make it happen!

Answer 1

You do not need to, instead add the user URL column to the list of searchable table columns

https://developer.wordpress.org/reference/hooks/user_search_columns/

Which includes a user contributed example that does this:

https://developer.wordpress.org/reference/hooks/user_search_columns/#comment-4605

add_filter( 'user_search_columns', 'wpdocs_filter_function_name', 10, 3 );
     
function wpdocs_filter_function_name( $search_columns, $search, $wp_user_query ) {
    $search_columns[] = 'user_url';
    return $search_columns;
}

With this, no syncing to a URL field is necessary.