MrBrian

<?php
/*
* Plugin Name: WPMU Blog Defaults
* Plugin URI: http://paidtoblog.com
* Description: Change the default options for WPMU and new blogs automagically
* Version: 1.0.2
* Author URI: MrBrian
*/

//------------------------------------------------------------------------//
//---Remove permalinks from menu------------------------------------------//
//------------------------------------------------------------------------//
function remove_permalinks_menu_item()
{
    global $submenu;
    if(!is_site_admin()) $submenu['options-general.php'][35] = '';
}
add_action( 'admin_menu', 'remove_permalinks_menu_item' );

//------------------------------------------------------------------------//
//---Change the permalink structure and default blogroll------------------//
//------------------------------------------------------------------------//

function change_newblog_defaults( $blog_id, $user_id )
{
    global $wpdb, $current_site, $wp_rewrite;
    //--change permalink structure
    switch_to_blog($blog_id);
    $permalink_structure = '/%category%/%postname%/';
    $wp_rewrite->set_permalink_structure($permalink_structure);
    $wp_rewrite->flush_rules();
    $wpdb->query( "UPDATE {$wpdb->terms} SET name = 'Articles', slug = 'articles' WHERE term_id = 1" );
    //--end

    //--change default blogroll
    $wpdb->query( "DELETE FROM {$wpdb->links} WHERE link_id = 1" );
    $wpdb->query( "DELETE FROM {$wpdb->links}WHERE link_id = 2" );
    $wpdb->query( "INSERT INTO {$wpdb->links} (link_url, link_name, link_category, link_owner, link_rss) VALUES ('http://" . $current_site->domain . $current_site->path . "', '" . $current_site->domain . "', 1356, '$user_id', 'http://" . $current_site->domain . $current_site->path . "feed/')" );
    //--end
    restore_current_blog();
}
add_action( 'wpmu_new_blog', 'change_newblog_defaults', 10, 2 );

//------------------------------------------------------------------------//
//---Modify the From and email used when sending emails from WPMU---------//
//------------------------------------------------------------------------//

function change_wp_mail_from($from_email)
{
    return $from_email; //return whatever you want as email, i just like it as default.
}
add_filter( 'wp_mail_from', 'change_wp_mail_from' );

function change_wp_mail_from_name($from_name)
{
    global $current_site;
    return $current_site->domain;
}
add_filter( 'wp_mail_from_name', 'change_wp_mail_from_name' );

//------------------------------------------------------------------------//
//---Change The Help and Forum links at very top of WPMU backend---------//
//------------------------------------------------------------------------//

function change_header_navigation($header_nav)
{
    global $current_site;
    $header_nav = ' | <a href="http://' . $current_site->domain . $current_site->path . 'faq/">Help</a>' . ' | ' . '<a href="http://' . $current_site->domain . $current_site->path . 'forum/">Forums</a>';
    return $header_nav;
}
add_filter('admin_header_navigation', 'change_header_navigation');

//------------------------------------------------------------------------//
//---Change default widgets------------------------------------------//
//------------------------------------------------------------------------//
This activates the given widgets in sidebar-1 and -2. You need to know the internal names of the widgets.
function change_blog_widgets() {

    add_option("sidebars_widgets",
        array("sidebar-1" => array("tag_cloud"),
             "sidebar-2" => array("archives", "links")));

}
add_action("populate_options", "change_blog_widgets");
?>