Ticket #15800: tab-tester.php

<?php
/**
 * Plugin Name: Network Tab Patch Test Case
 * Plugin URI: https://core.trac.wordpress.org/ticket/15800
 * Description: Test use case for the patch to allow extension of network site tabs
 * Author: Chris Olbekson <chris@x-team.com>
 * Version: 1.0
 * Author URI: http://x-team.com
 */

if ( ! is_network_admin() )
        exit;

function network_site_tabs_test() {
        global $_registered_pages;
        add_filter( 'network_edit_site_tabs', 'filter_network_tabs', 10, 3 );
        $hookname = get_plugin_page_hookname( 'wp_test_tab', '' );
        $_registered_pages[$hookname] = true;
        if ( isset( $_GET['page'] ) && $_GET['page'] == 'wp_test_tab' )
                add_action( $hookname, 'test_tab_callback' );

}
add_action( 'network_admin_menu', 'network_site_tabs_test' );

function filter_network_tabs( $tabs, $id, $pagenow ) {
        $tabs['test-tab'] = array( 'label' => __( 'Test Tab' ), 'menu-slug' => 'wp_test_tab', 'callback-function' => 'test_tab_callback' );

        return $tabs;
}

function test_tab_callback() {
        $id = isset( $_REQUEST['id'] ) ? intval( $_REQUEST['id'] ) : 0;
        $site_url_no_http = preg_replace( '#^http(s)?://#', '', get_blogaddress_by_id( $id ) );
        $title_site_url_linked = sprintf( __( 'Edit Site: <a href="%1$s">%2$s</a>' ), get_blogaddress_by_id( $id ), $site_url_no_http );
        ?>
        <div class="wrap">
                <h2 id="edit-site"><?php echo $title_site_url_linked ?></h2>
                <h3 class="nav-tab-wrapper">
                        <?php if ( function_exists( 'network_edit_site_tabs' ) )
                                network_edit_site_tabs( $id );
                        ?>
                </h3>
        </div>
        <?php
}