这可以通过以下方式实现adding rewrite rules.

第一add the query vars 将自定义值存储在我们的规则中：

function wpd_family_query_var( $query_vars ) {
    $query_vars[] = \'wpd_family\';
    $query_vars[] = \'wpd_members\';
    return $query_vars;
}
add_filter( \'query_vars\', \'wpd_family_query_var\' );

function wpd_add_family_rewrite_rules() {
    add_rewrite_rule(
        \'displaypage/([^/]+)/?$\',
        \'index.php?pagename=displaypage&wpd_family=$matches[1]\',
        \'top\'
    );
    add_rewrite_rule(
        \'displaypage/([^/]+)/members/?$\',
        \'index.php?pagename=displaypage&wpd_family=$matches[1]&wpd_members=true\',
        \'top\'
    );
}
add_action( \'init\', \'wpd_add_family_rewrite_rules\' );

然后，您可以在任何地方访问查询变量的值after the parse_query action 具有get_query_var():

if( $family = get_query_var( \'wpd_family\' ) ){
    echo \'family: \' . $family;
}

if( $members = get_query_var( \'wpd_members\' ) ){
    echo \'members: \' . $members;
}