apply_filters( 'user_search_columns', string[] $search_columns, string $search, WP_User_Query $query )

More Information

The user_search_columns filter is used to determine which user fields in the database are used when performing a search on user information.

When the ‘user_search_columns’ filter is called, it is passed three parameters: an array of fields to search, the search term, WP_User_Query object

<pre>add_filter( 'user_search_columns', 'filter_function_name', 10, 3 );

function filter_function_name( $search_columns, $search, $wp_user_query ) {
    // Alter $search_columns to include the fields you want to search on
    return $search_columns;
}

Where ‘filter_function_name’ is the function WordPress should call when the filter is run. Note that the filter function must return a value after it is finished processing or the search terms will be empty.

filter_function_name should be unique function name. It cannot match any other function name already declared