wp-multinetwork-switcher/wp-multinetwork-switcher.php
feibisi 90b17053d8 Add dashboard widget and refactor plugin structure
Introduces a new dashboard widget for network overview and quick switching, including supporting CSS and JS. Refactors the main class from WP_MultiNetwork_AdminBar to WP_MultiNetwork_Switcher, updates constant names, removes admin color scheme logic, and standardizes text domain usage. Also updates the plugin version to 1.0.3.
2025-07-09 22:26:36 +08:00

1093 lines
31 KiB
PHP

<?php
/**
* Plugin Name: WP Multi-Network Switcher
* Plugin URI: https://wpmultinetwork.com
* Description: Display current network information in admin bar and provide network switching functionality for WP Multi Network environments.
* Version: 1.0.3
* Author: WPMultiNetwork.com
* Author URI: https://wpmultinetwork.com
* Text Domain: wp-multinetwork-switcher
* Domain Path: /languages
* Requires at least: 5.0
* Tested up to: 6.8
* Requires PHP: 7.4
* Network: true
* License: GPL v2 or later
* License URI: https://www.gnu.org/licenses/gpl-2.0.html
*/
if (!defined("ABSPATH")) {
exit();
}
define("WPMN_SWITCHER_VERSION", "1.0.3");
define("WPMN_SWITCHER_PLUGIN_DIR", plugin_dir_path(__FILE__));
define("WPMN_SWITCHER_PLUGIN_URL", plugin_dir_url(__FILE__));
class WP_MultiNetwork_Switcher
{
private static $instance = null;
private $networks_cache = [];
public static function getInstance()
{
if (self::$instance === null) {
self::$instance = new self();
}
return self::$instance;
}
private function __construct()
{
add_action("plugins_loaded", [$this, "init"]);
}
public function init()
{
$this->loadTextDomain();
if (!$this->isMultiNetwork()) {
return;
}
add_action("admin_bar_menu", [$this, "addNetworkInfoToAdminBar"], 100);
add_action("admin_enqueue_scripts", [$this, "enqueueAdminAssets"]);
add_action("wp_enqueue_scripts", [$this, "enqueueAdminAssets"]);
add_action("wp_ajax_switch_network", [$this, "handleNetworkSwitch"]);
add_action("wp_ajax_get_network_info", [$this, "getNetworkInfo"]);
add_action("admin_head", [$this, "addAdminHeadStyles"]);
add_action("wp_head", [$this, "addAdminHeadStyles"]);
add_action("wp_dashboard_setup", [$this, "addDashboardWidget"]);
add_action("wp_network_dashboard_setup", [$this, "addDashboardWidget"]);
add_action("admin_enqueue_scripts", [$this, "enqueueDashboardAssets"]);
add_action("admin_print_styles", [$this, "printDashboardStyles"]);
}
private function loadTextDomain()
{
load_plugin_textdomain(
"wp-multinetwork-switcher",
false,
dirname(plugin_basename(__FILE__)) . "/languages"
);
}
private function isMultiNetwork()
{
return is_multisite() && function_exists("get_networks");
}
public function addNetworkInfoToAdminBar($wp_admin_bar)
{
if (!current_user_can("manage_network")) {
return;
}
$current_network = $this->getCurrentNetworkInfo();
$all_networks = $this->getAllNetworks();
if (empty($current_network) || count($all_networks) <= 1) {
return;
}
$wp_admin_bar->add_menu([
"id" => "wp-multinetwork-switcher",
"title" => $this->getNetworkDisplayTitle($current_network),
"href" => "#",
"meta" => [
"class" => "wp-multinetwork-switcher",
"title" => sprintf(
__("Current Network: %s", "wp-multinetwork-switcher"),
$current_network["domain"]
),
],
]);
foreach ($all_networks as $network) {
$is_current = $network->id == $current_network["id"];
$site_count = $this->getNetworkSitesCount($network->id);
$wp_admin_bar->add_menu([
"parent" => "wp-multinetwork-switcher",
"id" => "network-" . $network->id,
"title" => $this->getNetworkMenuTitle(
$network,
$is_current,
$site_count
),
"href" => $is_current
? "#"
: $this->getNetworkSwitchUrl($network),
"meta" => [
"class" => $is_current
? "current-network"
: "switch-network",
"data-network-id" => $network->id,
"data-nonce" => wp_create_nonce("network_switch_nonce"),
"title" => sprintf(
__(
"Network: %s%s (%d sites)",
"wp-multinetwork-switcher"
),
$network->domain,
$network->path,
$site_count
),
],
]);
}
if (current_user_can("manage_network")) {
$wp_admin_bar->add_menu([
"parent" => "wp-multinetwork-switcher",
"id" => "network-admin-all",
"title" => $this->getNetworkAdminLinkTitle(),
"href" => network_admin_url(),
"meta" => [
"class" => "network-admin-link",
],
]);
}
}
public function addDashboardWidget()
{
if (!current_user_can("manage_network")) {
return;
}
wp_add_dashboard_widget(
"wpmn_network_dashboard",
__("Multi Network Overview", "wp-multinetwork-switcher"),
[$this, "renderDashboardWidget"]
);
}
public function renderDashboardWidget()
{
$all_networks = $this->getAllNetworks();
$current_network = $this->getCurrentNetworkInfo();
$total_sites = 0;
foreach ($all_networks as $network) {
$total_sites += $this->getNetworkSitesCount($network->id);
}
$super_admin_count = $this->getSuperAdminCount();
echo '<div class="wpmn-dashboard-widget">';
echo '<div class="wpmn-stats-row">';
echo '<div class="wpmn-stat-item">';
echo '<div class="wpmn-stat-number">' . count($all_networks) . "</div>";
echo '<div class="wpmn-stat-label">' .
__("Total Networks", "wp-multinetwork-switcher") .
"</div>";
echo "</div>";
echo '<div class="wpmn-stat-item">';
echo '<div class="wpmn-stat-number">' . $total_sites . "</div>";
echo '<div class="wpmn-stat-label">' .
__("Total Sites", "wp-multinetwork-switcher") .
"</div>";
echo "</div>";
echo '<div class="wpmn-stat-item">';
echo '<div class="wpmn-stat-number">' . $super_admin_count . "</div>";
echo '<div class="wpmn-stat-label">' .
__("Super Admins", "wp-multinetwork-switcher") .
"</div>";
echo "</div>";
echo "</div>";
echo "<h4>" .
__("Current Network", "wp-multinetwork-switcher") .
"</h4>";
if ($current_network) {
$favicon_url = $this->getNetworkFavicon($current_network["id"]);
echo '<div class="wpmn-current-network">';
echo '<div class="wpmn-current-network-info">';
if ($favicon_url) {
echo '<img src="' .
esc_url($favicon_url) .
'" alt="' .
esc_attr($current_network["site_name"]) .
'" class="wpmn-network-favicon" />';
}
echo '<div class="wpmn-current-network-details">';
echo "<p>" . esc_html($current_network["site_name"]) . "</p>";
echo "<p><small>" .
esc_html(
$current_network["domain"] . $current_network["path"]
) .
"</small></p>";
echo "<p>" .
sprintf(
__("%d sites", "wp-multinetwork-switcher"),
$this->getNetworkSitesCount($current_network["id"])
) .
"</p>";
echo "</div>";
echo "</div>";
echo "</div>";
}
if (count($all_networks) > 1) {
echo '<div class="wpmn-network-list">';
echo "<h4>" .
__("Quick Switch", "wp-multinetwork-switcher") .
"</h4>";
echo '<div class="wpmn-network-grid">';
$display_networks = array_slice($all_networks, 0, 5);
foreach ($display_networks as $network) {
$is_current =
$current_network && $network->id == $current_network["id"];
$site_count = $this->getNetworkSitesCount($network->id);
$site_name = get_network_option(
$network->id,
"site_name",
$network->domain
);
echo '<div class="wpmn-network-item' .
($is_current ? " current" : "") .
'">';
if (!$is_current) {
echo '<a href="' .
esc_url($this->getNetworkSwitchUrl($network)) .
'" class="wpmn-switch-link" data-network-id="' .
$network->id .
'">';
}
echo '<div class="wpmn-network-name">' .
esc_html($site_name) .
"</div>";
echo '<div class="wpmn-network-info">';
echo '<span class="wpmn-network-domain">' .
esc_html($network->domain) .
"</span>";
echo '<span class="wpmn-network-count">' .
sprintf(
__("%d sites", "wp-multinetwork-switcher"),
$site_count
) .
"</span>";
echo "</div>";
if (!$is_current) {
echo "</a>";
}
echo "</div>";
}
if (count($all_networks) > 6) {
echo '<div class="wpmn-network-more">';
echo '<span class="wpmn-more-text">' .
sprintf(
__("+ %d more networks", "wp-multinetwork-switcher"),
count($all_networks) - 6
) .
"</span>";
echo "</div>";
}
echo "</div>";
echo "</div>";
}
echo '<div class="wpmn-actions">';
echo '<a href="' .
esc_url(network_admin_url()) .
'" class="button button-primary">' .
__("Manage Networks", "wp-multinetwork-switcher") .
"</a>";
echo "</div>";
echo "</div>";
}
public function printDashboardStyles()
{
$screen = get_current_screen();
if (!$screen || !current_user_can("manage_network")) {
return;
}
if (
$screen->id === "dashboard" ||
$screen->id === "dashboard-network"
) {
echo '<style type="text/css">' .
$this->getDashboardCSS() .
"</style>";
}
}
private function getSuperAdminCount()
{
$cache_key = "wpmn_super_admin_count";
$count = wp_cache_get($cache_key);
if (false === $count) {
$super_admins = get_super_admins();
$count = count($super_admins);
wp_cache_set($cache_key, $count, "", 300);
}
return $count;
}
private function getNetworkFavicon($network_id)
{
$cache_key = "wpmn_network_favicon_" . $network_id;
$favicon_url = wp_cache_get($cache_key);
if (false === $favicon_url) {
$main_site_id = get_main_site_id($network_id);
if ($main_site_id) {
switch_to_blog($main_site_id);
$favicon_url = get_site_icon_url(32);
if (!$favicon_url) {
$favicon_url =
get_template_directory_uri() . "/favicon.ico";
if (!@file_get_contents($favicon_url)) {
$favicon_url = admin_url("images/wordpress-logo.svg");
}
}
restore_current_blog();
} else {
$favicon_url = admin_url("images/wordpress-logo.svg");
}
wp_cache_set($cache_key, $favicon_url, "", 300);
}
return $favicon_url;
}
public function enqueueDashboardAssets()
{
$screen = get_current_screen();
if (!$screen || !current_user_can("manage_network")) {
return;
}
if (
$screen->id === "dashboard" ||
$screen->id === "dashboard-network"
) {
wp_enqueue_script("jquery");
wp_add_inline_script("jquery", $this->getDashboardJS());
}
}
private function getDashboardCSS()
{
return "
.wpmn-dashboard-widget {
padding: 16px;
}
.wpmn-stats-row {
display: flex;
margin-bottom: 20px;
gap: 15px;
}
.wpmn-stat-item {
flex: 1;
text-align: center;
padding: 12px;
background: #f8f9fa;
border-radius: 4px;
}
.wpmn-stat-number {
font-size: 20px;
font-weight: 600;
line-height: 1.2;
}
.wpmn-stat-label {
font-size: 12px;
color: #666;
margin-top: 5px;
}
.wpmn-current-network {
background: #f8f9fa;
padding: 15px;
border-radius: 4px;
margin-bottom: 20px;
}
.wpmn-current-network h4 {
margin: 0 0 10px 0;
color: #0073aa;
}
.wpmn-current-network-info {
display: flex;
align-items: center;
gap: 12px;
}
.wpmn-network-favicon {
width: 45px;
height: 45px;
border-radius: 4px;
object-fit: cover;
flex-shrink: 0;
border: 1px solid #c3c4c7;
background: #ffffff;
padding: 2%;
}
.wpmn-current-network-details p {
margin: 5px 0;
}
.wpmn-network-list h4 {
margin: 0 0 15px 0;
color: #333;
}
.wpmn-network-grid {
display: grid;
grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
gap: 10px;
margin-bottom: 20px;
}
.wpmn-network-item {
border: 1px solid #ddd;
border-radius: 4px;
padding: 12px;
background: #fff;
transition: all 0.2s ease;
}
.wpmn-network-item.current {
border-color: #0073aa;
background: rgba(240, 245, 250, 0.1);
}
.wpmn-network-item a {
text-decoration: none;
color: inherit;
display: block;
}
.wpmn-network-item:not(.current):hover {
border-color: #72aee6;
background: #f8f9fa;
}
.wpmn-network-name {
font-weight: 400;
margin-bottom: 5px;
color: #333;
}
.wpmn-network-info {
display: flex;
justify-content: space-between;
align-items: center;
font-size: 12px;
color: #666;
}
.wpmn-network-domain {
font-family: monospace;
}
.wpmn-network-count {
padding: 2px 6px;
border-radius: 3px;
font-size: 9px;
font-weight: 500;
text-transform: uppercase;
letter-spacing: 0.5px;
background: #e8f5e8;
color: #2e7d32;
}
.wpmn-network-more {
display: flex;
align-items: center;
justify-content: center;
border: 1px dashed #ddd;
border-radius: 4px;
padding: 12px;
color: #666;
font-size: 12px;
font-style: italic;
background: #fafafa;
}
.wpmn-actions {
text-align: center;
padding-top: 15px;
border-top: 1px solid #eee;
}
@media (max-width: 600px) {
.wpmn-stats-row {
flex-direction: column;
gap: 10px;
}
.wpmn-network-grid {
grid-template-columns: 1fr;
}
.wpmn-current-network-info {
flex-direction: column;
align-items: flex-start;
gap: 8px;
}
}
";
}
private function getDashboardJS()
{
return "
jQuery(document).ready(function($) {
$('.wpmn-switch-link').on('click', function(e) {
e.preventDefault();
var link = $(this);
var networkId = link.data('network-id');
if (confirm('" .
esc_js(__("Switch to this network?", "wp-multinetwork-switcher")) .
"')) {
window.location.href = link.attr('href');
}
});
});
";
}
private function getCurrentNetworkInfo()
{
$current_network = get_network();
if (!$current_network) {
return null;
}
return [
"id" => $current_network->id,
"domain" => $current_network->domain,
"path" => $current_network->path,
"site_name" => get_network_option(
$current_network->id,
"site_name",
$current_network->domain
),
];
}
private function getAllNetworks()
{
if (!empty($this->networks_cache)) {
return $this->networks_cache;
}
if (!function_exists("get_networks")) {
return [];
}
$this->networks_cache = get_networks([
"number" => 100,
"orderby" => "domain",
]);
return $this->networks_cache;
}
private function getNetworkSitesCount($network_id)
{
$cache_key = "wpmn_network_sites_count_" . $network_id;
$count = wp_cache_get($cache_key);
if (false === $count) {
$sites = get_sites([
"network_id" => $network_id,
"count" => true,
"number" => 1000,
]);
$count = is_numeric($sites) ? intval($sites) : count($sites);
wp_cache_set($cache_key, $count, "", 300);
}
return $count;
}
private function getNetworkDisplayTitle($network_info)
{
$site_name = !empty($network_info["site_name"])
? $network_info["site_name"]
: $network_info["domain"];
$current_site_count = $this->getNetworkSitesCount($network_info["id"]);
return sprintf(
"%s %s %s",
$this->getDashicon("admin-site-alt3", "network-indicator"),
sprintf(
'<span class="network-name">%s</span>',
esc_html($site_name)
),
sprintf(
'<span class="network-count">(%d)</span>',
$current_site_count
)
);
}
private function getNetworkMenuTitle($network, $is_current, $site_count)
{
$site_name = get_network_option(
$network->id,
"site_name",
$network->domain
);
$indicator = $is_current ? $this->getDashicon("yes") . " " : "";
return sprintf(
'%s %s <span class="site-count">(%s)</span>',
$indicator,
esc_html($site_name),
sprintf(
_n(
"%d site",
"%d sites",
$site_count,
"wp-multinetwork-switcher"
),
$site_count
)
);
}
private function getNetworkAdminLinkTitle()
{
return sprintf(
"%s %s",
$this->getDashicon("admin-tools"),
__("Manage All Networks", "wp-multinetwork-switcher")
);
}
private function getDashicon($icon, $class = "")
{
$class_attr = $class ? sprintf(' class="%s"', esc_attr($class)) : "";
return sprintf(
'<span%s data-dashicon="%s"></span>',
$class_attr,
esc_attr($icon)
);
}
private function getNetworkSwitchUrl($network)
{
$protocol = is_ssl() ? "https://" : "http://";
$url = $protocol . $network->domain . $network->path;
if (is_admin()) {
$url .= "wp-admin/";
}
return $url;
}
public function handleNetworkSwitch()
{
if (!check_ajax_referer("network_switch_nonce", "nonce", false)) {
wp_send_json_error(
__("Invalid nonce.", "wp-multinetwork-switcher")
);
}
if (!current_user_can("manage_network")) {
wp_send_json_error(
__("Insufficient permissions.", "wp-multinetwork-switcher")
);
}
$network_id = intval($_POST["network_id"]);
$network = get_network($network_id);
if (!$network) {
wp_send_json_error(
__("Network does not exist.", "wp-multinetwork-switcher")
);
}
if (!$this->userCanAccessNetwork(get_current_user_id(), $network_id)) {
wp_send_json_error(
__("Access denied to this network.", "wp-multinetwork-switcher")
);
}
$switch_url = $this->getNetworkSwitchUrl($network);
wp_send_json_success(["redirect_url" => $switch_url]);
}
public function getNetworkInfo()
{
if (!check_ajax_referer("network_switch_nonce", "nonce", false)) {
wp_send_json_error(
__("Invalid nonce.", "wp-multinetwork-switcher")
);
}
if (!current_user_can("manage_network")) {
wp_send_json_error(
__("Insufficient permissions.", "wp-multinetwork-switcher")
);
}
$network_id = intval($_POST["network_id"]);
$network = get_network($network_id);
if (!$network) {
wp_send_json_error(
__("Network does not exist.", "wp-multinetwork-switcher")
);
}
$site_count = $this->getNetworkSitesCount($network_id);
$site_name = get_network_option(
$network_id,
"site_name",
$network->domain
);
wp_send_json_success([
"id" => $network->id,
"domain" => $network->domain,
"path" => $network->path,
"site_name" => $site_name,
"site_count" => $site_count,
]);
}
private function userCanAccessNetwork($user_id, $network_id)
{
if (is_super_admin($user_id)) {
return true;
}
$sites = get_sites([
"network_id" => $network_id,
"number" => 100,
]);
foreach ($sites as $site) {
if (is_user_member_of_blog($user_id, $site->blog_id)) {
return true;
}
}
return false;
}
public function enqueueAdminAssets()
{
if (!is_admin_bar_showing() || !current_user_can("manage_network")) {
return;
}
wp_enqueue_script("jquery");
wp_enqueue_style("dashicons");
wp_add_inline_script("jquery", $this->getInlineJS());
}
public function addAdminHeadStyles()
{
if (!is_admin_bar_showing() || !current_user_can("manage_network")) {
return;
}
echo '<style type="text/css">' . $this->getInlineCSS() . "</style>";
}
private function getInlineCSS()
{
return '
#wpadminbar .wp-multinetwork-switcher .ab-item {
padding: 0 10px !important;
}
#wpadminbar .network-indicator[data-dashicon]:before {
content: "\f230";
position: relative;
float: left;
font: normal 20px / 1 dashicons;
speak: never;
padding: 6px 0;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
background-image: none !important;
margin-right: 6px;
color: #9ca2a7;
}
#wpadminbar [data-dashicon="yes"]:before {
content: "\\f147";
font-family: dashicons;
color: #72aee6;
margin-right: 5px;
}
#wpadminbar [data-dashicon="admin-tools"]:before {
content: "\\f348";
font-family: dashicons;
margin-right: 5px;
}
#wpadminbar .network-name {
font-weight: 400;
}
#wpadminbar .network-count {
font-size: 12px;
opacity: 0.8;
margin-left: 5px;
}
#wpadminbar .wp-multinetwork-switcher .ab-submenu {
min-width: 300px;
}
#wpadminbar .wp-multinetwork-switcher .ab-submenu .ab-item {
line-height: 1.3;
padding: 5px 12px !important;
white-space: normal;
display: flex;
align-items: center;
gap: 12px;
}
#wpadminbar .current-network .ab-item {
background-color: rgba(240, 245, 250, 0.1) !important;
color: #72aee6 !important;
}
#wpadminbar .switch-network:hover .ab-item {
background-color: #1d2327 !important;
color: #fff !important;
}
#wpadminbar .site-count {
font-size: 11px;
opacity: 0.8;
font-weight: normal;
}
#wpadminbar .network-admin-link {
border-top: 1px solid rgba(255,255,255,0.2);
margin-top: 5px;
padding-top: 5px;
}
#wpadminbar .network-admin-link .ab-item {
color: #72aee6 !important;
font-weight: 400;
}
#wpadminbar .switching-indicator {
font-size: 11px;
opacity: 0.7;
font-style: italic;
}
@media screen and (max-width: 782px) {
#wpadminbar .wp-multinetwork-switcher .ab-submenu {
min-width: 280px;
left: -120px;
}
}
';
}
private function getInlineJS()
{
$ajax_url = admin_url("admin-ajax.php");
$switching_text = __("Switching...", "wp-multinetwork-switcher");
$error_text = __(
"Error switching network. Please try again.",
"wp-multinetwork-switcher"
);
return sprintf(
"
jQuery(document).ready(function($) {
var switchingInProgress = false;
$('.switch-network a').on('click', function(e) {
e.preventDefault();
if (switchingInProgress) {
return false;
}
var \$link = $(this);
var \$item = \$link.closest('.switch-network');
var networkId = \$item.data('network-id');
var nonce = \$item.data('nonce');
var originalHref = \$link.attr('href');
if (!networkId || !nonce) {
window.location.href = originalHref;
return;
}
switchingInProgress = true;
\$link.append(' <span class=\"switching-indicator\">(%s)</span>');
$.ajax({
url: '%s',
type: 'POST',
data: {
action: 'switch_network',
network_id: networkId,
nonce: nonce
},
success: function(response) {
if (response.success && response.data.redirect_url) {
window.location.href = response.data.redirect_url;
} else {
alert(response.data || '%s');
switchingInProgress = false;
\$link.find('.switching-indicator').remove();
}
},
error: function() {
alert('%s');
switchingInProgress = false;
\$link.find('.switching-indicator').remove();
}
});
});
$(document).keydown(function(e) {
if (e.ctrlKey && e.shiftKey && e.keyCode === 78) {
e.preventDefault();
var \$switcher = $('#wp-multinetwork-switcher');
if (\$switcher.length) {
\$switcher.trigger('click');
}
}
});
$('#wp-multinetwork-switcher').attr({
'role': 'menubar',
'aria-label': '%s'
});
$('#wp-multinetwork-switcher .ab-submenu').attr('role', 'menu');
$('#wp-multinetwork-switcher .ab-submenu li').attr('role', 'menuitem');
});
",
$switching_text,
$ajax_url,
$error_text,
$error_text,
esc_js(__("Network Switcher", "wp-multinetwork-switcher"))
);
}
}
WP_MultiNetwork_Switcher::getInstance();
register_activation_hook(__FILE__, function () {
if (!is_multisite()) {
deactivate_plugins(plugin_basename(__FILE__));
wp_die(
__(
"This plugin requires WordPress Multisite to be enabled.",
"wp-multinetwork-switcher"
),
__("Plugin Activation Error", "wp-multinetwork-switcher"),
["back_link" => true]
);
}
global $wp_version;
if (version_compare($wp_version, "5.0", "<")) {
deactivate_plugins(plugin_basename(__FILE__));
wp_die(
__(
"This plugin requires WordPress 5.0 or higher.",
"wp-multinetwork-switcher"
),
__("Plugin Activation Error", "wp-multinetwork-switcher"),
["back_link" => true]
);
}
});
register_deactivation_hook(__FILE__, function () {
wp_cache_flush();
});
function wpmn_get_network_sites_count($network_id)
{
if (!is_multisite() || !function_exists("get_sites")) {
return 0;
}
$sites = get_sites([
"network_id" => $network_id,
"count" => true,
"number" => 1000,
]);
return is_numeric($sites) ? intval($sites) : count($sites);
}
function wpmn_user_can_access_network($user_id, $network_id)
{
$user = get_userdata($user_id);
if (!$user) {
return false;
}
if (is_super_admin($user_id)) {
return true;
}
$sites = get_sites([
"network_id" => $network_id,
"number" => 100,
]);
foreach ($sites as $site) {
if (is_user_member_of_blog($user_id, $site->blog_id)) {
return true;
}
}
return false;
}
function wpmn_get_network_display_name($network_id)
{
$network = get_network($network_id);
if (!$network) {
return "";
}
$site_name = get_network_option($network_id, "site_name");
return !empty($site_name) ? $site_name : $network->domain;
}