需要有关add_rewrite_rule的帮助

function add_rewrite_rules( $wp_rewrite ) 
{
    $new_rules = array(
        '('.$template_page_name.')/designers/(.*?)/?([0-9]{1,})/?$' => 'designers.php?designer='.
        $wp_rewrite->preg_index(1).'&bid='.
        $wp_rewrite->preg_index(2)
    );
       // Always add your rules to the top, to make sure your rules have priority
    $wp_rewrite->rules = $new_rules + $wp_rewrite->rules;
}
add_action('generate_rewrite_rules', 'add_rewrite_rules');

function query_vars($public_query_vars) {

    $public_query_vars[] = "designer";
    $public_query_vars[] = "bid";
    return $public_query_vars;
}
add_filter('query_vars', 'query_vars')

add_action('generate_rewrite_rules', 'add_rewrite_rules');
add_filter('query_vars', 'query_vars');

/* Custom re-write rules for desigenrs
------------------------------------------------------------------------------*/
function add_rewrite_rules( $wp_rewrite ) 
{
    add_rewrite_rule('^designers/([^/]*)/([^/]*)$ /designers/?designer=&bid= [L]', 'top');
    flush_rewrite_rules(false);
}


function query_vars($public_query_vars) {

    $public_query_vars[] = "designer";
    $public_query_vars[] = "bid";
    return $public_query_vars;
}

add_filter('rewrite_rules_array','wp_insertMyRewriteRules');
add_filter('query_vars','wp_insertMyRewriteQueryVars');
add_filter('init','flushRules');  

// Remember to flush_rules() when adding rules
function flushRules(){
    global $wp_rewrite;
    $wp_rewrite->flush_rules();
}

// Adding a new rule
function wp_insertMyRewriteRules($rules)
{
    $newrules = array();
    $newrules['(designers)/(\d*)$'] = 'index.php?pagename=designers&designer=$matches[1]';
    return $newrules + $rules;
}

// Adding the bid var so that WP recognizes it
function wp_insertMyRewriteQueryVars($vars)
{
    array_push($vars, 'designer');
    return $vars;
}

add_filter('search_rewrite_rules', 'designers_createRewriteRules');

function designers_createRewriteRules($rewrite) {
global $wp_rewrite;

// add rewrite tokens
$designer_token = '%designers%';
$wp_rewrite->add_rewrite_tag($designer_token, '(.+)', 'designers=');

$bid_token = '%bid%';
$wp_rewrite->add_rewrite_tag($bid_token, '(.+)', 'bid=');

$keywords_structure = $wp_rewrite->root . "designers/$designer_token/$bid_token";
$keywords_rewrite = $wp_rewrite->generate_rewrite_rules($keywords_structure);

return ( $rewrite + $keywords_rewrite );

/* Initiation script for NF template
------------------------------------------------------------------------------*/   
add_action('after_setup_theme','norwegianfashion_setup');

if ( ! function_exists( 'norwegianfashion_setup' ) ):

  function norwegianfashion_setup() { 
    /* Here I do a lot of stuff */

    // SEO friendly URL for desigenrs
    add_action( 'init', 'wpa5413_init' );
    add_filter( 'query_vars', 'wpa5413_query_vars' );
  }

endif;


/* Custom re-write rules for desigenrs
------------------------------------------------------------------------------*/
function wpa5413_init()
{
    // Remember to flush the rules once manually after you added this code!
    add_rewrite_rule(
        'designers/([^/]+)/?',
        'index.php?pagename=designers&designer=$matches[1]',
        'top' );
}

function wpa5413_query_vars( $query_vars )
{
    $query_vars[] = 'designer';
    return $query_vars;
}

add_action( 'init', 'wpa5413_init' );
function wpa5413_init()
{
    // Remember to flush the rules once manually after you added this code!
    add_rewrite_rule(
        // The regex to match the incoming URL
        'designers/([^/]+)/?',
        // The resulting internal URL: `index.php` because we still use WordPress
        // `pagename` because we use this WordPress page
        // `designer_slug` because we assign the first captured regex part to this variable
        'index.php?pagename=designers&designer_slug=$matches[1]',
        // This is a rather specific URL, so we add it to the top of the list
        // Otherwise, the "catch-all" rules at the bottom (for pages and attachments) will "win"
        'top' );
}

add_filter( 'query_vars', 'wpa5413_query_vars' );
function wpa5413_query_vars( $query_vars )
{
    $query_vars[] = 'designer_slug';
    return $query_vars;
}