WordPress/wp-admin/menu.php

<?php
/**
 * Build Administration Menu.
 *
 * @package WordPress
 * @subpackage Administration
 */

/**
 * Constructs the admin menu bar.
 *
 * The elements in the array are :
 *     0: Menu item name
 *     1: Minimum level or capability required.
 *     2: The URL of the item's file
 *     3: Class
 *     4: ID
 *     5: Icon for top level menu 
 *
 * @global array $menu
 * @name $menu
 * @var array
 */

$awaiting_mod = wp_count_comments();
$awaiting_mod = $awaiting_mod->moderated;

$menu[0] = array( __('Dashboard'), 'read', 'index.php', '', 'menu-top', 'menu-dashboard', 'div' );

$menu[4] = array( '', 'read', '', '', 'wp-menu-separator' );

$menu[5] = array( __('Posts'), 'edit_posts', 'edit.php', '', 'wp-menu-open menu-top', 'menu-posts', 'div' );
	$submenu['edit.php'][5]  = array( __('Edit'), 'edit_posts', 'edit.php' );
	$submenu['edit.php'][10]  = array( _c('Add New|post'), 'edit_posts', 'post-new.php' );
	$submenu['edit.php'][15] = array( __('Tags'), 'manage_categories', 'edit-tags.php' );
	$submenu['edit.php'][20] = array( __('Categories'), 'manage_categories', 'categories.php' );

$menu[10] = array( __('Media'), 'upload_files', 'upload.php', '', 'menu-top', 'menu-media', 'div' );
	$submenu['upload.php'][5] = array( __('Library'), 'upload_files', 'upload.php');
	$submenu['upload.php'][10] = array( _c('Add New|file'), 'upload_files', 'media-new.php');

$menu[15] = array( __('Links'), 'manage_links', 'link-manager.php', '', 'menu-top', 'menu-links', 'div' );
	$submenu['link-manager.php'][5] = array( __('Edit'), 'manage_links', 'link-manager.php' );
	$submenu['link-manager.php'][10] = array( _c('Add New|links'), 'manage_links', 'link-add.php' );
	$submenu['link-manager.php'][15] = array( __('Link Categories'), 'manage_categories', 'edit-link-categories.php' );

$menu[20] = array( __('Pages'), 'edit_pages', 'edit-pages.php', '', 'menu-top', 'menu-pages', 'div' );
	$submenu['edit-pages.php'][5] = array( __('Edit'), 'edit_pages', 'edit-pages.php' );
	$submenu['edit-pages.php'][10] = array( _c('Add New|page'), 'edit_pages', 'page-new.php' );

$menu[25] = array( sprintf( __('Comments %s'), "<span id='awaiting-mod' class='count-$awaiting_mod'><span class='pending-count'>" . number_format_i18n($awaiting_mod) . "</span></span>" ), 'edit_posts', 'edit-comments.php', '', 'menu-top', 'menu-comments', 'div' );

$_wp_last_object_menu = 25; // The index of the last top-level menu in the object menu group

$menu[29] = array( '', 'read', '', '', 'wp-menu-separator' );

$menu[30] = array( __('Appearance'), 'switch_themes', 'themes.php', '', 'menu-top', 'menu-appearance', 'div' );
	$submenu['themes.php'][5]  = array(__('Themes'), 'switch_themes', 'themes.php');
	$submenu['themes.php'][10] = array(__('Editor'), 'edit_themes', 'theme-editor.php');

$update_plugins = get_option( 'update_plugins' );
$update_count = 0;
if ( !empty($update_plugins->response) )
	$update_count = count( $update_plugins->response );

$menu[35] = array( sprintf( __('Plugins %s'), "<span class='update-plugins count-$update_count'><span class='plugin-count'>" . number_format_i18n($update_count) . "</span></span>" ), 'activate_plugins', 'plugins.php', '', 'menu-top', 'menu-plugins', 'div' );
	$submenu['plugins.php'][5]  = array( __('Installed'), 'activate_plugins', 'plugins.php' );
	$submenu['plugins.php'][10] = array(_c('Add New|plugin'), 'install_plugins', 'plugin-install.php');	
	$submenu['plugins.php'][15] = array( __('Editor'), 'edit_plugins', 'plugin-editor.php' );

if ( current_user_can('edit_users') )
	$menu[40] = array( __('Users'), 'edit_users', 'users.php', '', 'menu-top', 'menu-users', 'div' );
else
	$menu[40] = array( __('Profile'), 'read', 'profile.php', '', 'menu-top', 'menu-users', 'div' );

if ( current_user_can('edit_users') ) {
	$_wp_real_parent_file['profile.php'] = 'users.php'; // Back-compat for plugins adding submenus to profile.php.
	$submenu['users.php'][5] = array(__('Authors &amp; Users'), 'edit_users', 'users.php');
	$submenu['users.php'][10] = array(__('Add New'), 'create_users', 'user-new.php');
	$submenu['users.php'][15] = array(__('Your Profile'), 'read', 'profile.php');
} else {
	$_wp_real_parent_file['users.php'] = 'profile.php';
	$submenu['profile.php'][5] = array(__('Your Profile'), 'read', 'profile.php');
}

$menu[45] = array( __('Tools'), 'manage_options', 'tools.php', '', 'menu-top', 'menu-tools', 'div' );
	$submenu['tools.php'][5] = array( __('Tools'), 'read', 'tools.php' );
	$submenu['tools.php'][10] = array( __('Import'), 'import', 'import.php' );
	$submenu['tools.php'][15] = array( __('Export'), 'import', 'export.php' );
	$submenu['tools.php'][20] = array( __('Upgrade'), 'install_plugins',  'update-core.php');

$menu[50] = array( __('Settings'), 'manage_options', 'options-general.php', '', 'menu-top', 'menu-settings', 'div' );
	$submenu['options-general.php'][10] = array(__('General'), 'manage_options', 'options-general.php');
	$submenu['options-general.php'][15] = array(__('Writing'), 'manage_options', 'options-writing.php');
	$submenu['options-general.php'][20] = array(__('Reading'), 'manage_options', 'options-reading.php');
	$submenu['options-general.php'][25] = array(__('Discussion'), 'manage_options', 'options-discussion.php');
	$submenu['options-general.php'][30] = array(__('Media'), 'manage_options', 'options-media.php');
	$submenu['options-general.php'][35] = array(__('Privacy'), 'manage_options', 'options-privacy.php');
	$submenu['options-general.php'][40] = array(__('Permalinks'), 'manage_options', 'options-permalink.php');
	$submenu['options-general.php'][45] = array(__('Miscellaneous'), 'manage_options', 'options-misc.php');

$menu[55] = array( '', 'read', '', '', 'wp-menu-separator-last' );

// Back-compat for old top-levels
$_wp_real_parent_file['post.php'] = 'edit.php'; 
$_wp_real_parent_file['post-new.php'] = 'edit.php';
$_wp_real_parent_file['page-new.php'] = 'edit-pages.php';

do_action('_admin_menu');

// Create list of page plugin hook names.
foreach ($menu as $menu_page) {
	$admin_page_hooks[$menu_page[2]] = sanitize_title($menu_page[0]);
}

$_wp_submenu_nopriv = array();
$_wp_menu_nopriv = array();
// Loop over submenus and remove pages for which the user does not have privs.
foreach ( array( 'submenu' ) as $sub_loop ) {
	foreach ($$sub_loop as $parent => $sub) {
		foreach ($sub as $index => $data) {
			if ( ! current_user_can($data[1]) ) {
				unset(${$sub_loop}[$parent][$index]);
				$_wp_submenu_nopriv[$parent][$data[2]] = true;
			}
		}

		if ( empty(${$sub_loop}[$parent]) )
			unset(${$sub_loop}[$parent]);
	}
}

// Loop over the top-level menu.
// Menus for which the original parent is not acessible due to lack of privs will have the next
// submenu in line be assigned as the new menu parent.
foreach ( $menu as $id => $data ) {
	if ( empty($submenu[$data[2]]) )
		continue;
	$subs = $submenu[$data[2]];
	$first_sub = array_shift($subs);
	$old_parent = $data[2];
	$new_parent = $first_sub[2];
	// If the first submenu is not the same as the assigned parent,
	// make the first submenu the new parent.
	if ( $new_parent != $old_parent ) {
		$_wp_real_parent_file[$old_parent] = $new_parent;
		$menu[$id][2] = $new_parent;

		foreach ($submenu[$old_parent] as $index => $data) {
			$submenu[$new_parent][$index] = $submenu[$old_parent][$index];
			unset($submenu[$old_parent][$index]);
		}
		unset($submenu[$old_parent]);

		if ( isset($_wp_submenu_nopriv[$old_parent]) )
			$_wp_submenu_nopriv[$new_parent] = $_wp_submenu_nopriv[$old_parent];
	}
}

do_action('admin_menu', '');

// Remove menus that have no accessible submenus and require privs that the user does not have.
// Run re-parent loop again.
foreach ( $menu as $id => $data ) {
	// If submenu is empty...
	if ( empty($submenu[$data[2]]) ) {
		// And user doesn't have privs, remove menu.
		if ( ! current_user_can($data[1]) ) {
			$_wp_menu_nopriv[$data[2]] = true;
			unset($menu[$id]);
		}
	}
}

unset($id);

function add_cssclass($add, $class) {
	$class = empty($class) ? $add : $class .= ' ' . $add;
	return $class;
}

function add_menu_classes($menu) {

	$first = $lastorder = false;
	$i = 0;
	$mc = count($menu);
	foreach ( $menu as $order => $top ) {
		$i++;

		if ( 0 == $order ) { // dashboard is always shown/single
			$menu[0][4] = add_cssclass('menu-top-first menu-top-last', $top[4]);
			continue;
		}

		if ( empty($top[2]) ) { // if separator
			$first = true;
			if ( $lastorder ) {
				$c = $menu[$lastorder][4];
				$menu[$lastorder][4] = add_cssclass('menu-top-last', $c);
			}
			continue;
		}

		if ( $first ) {
			$c = $menu[$order][4];
			$menu[$order][4] = add_cssclass('menu-top-first', $c);
			$first = false;
		}

		if ( $mc == $i ) { // last item
			$c = $menu[$order][4];
			$menu[$order][4] = add_cssclass('menu-top-last', $c);
		}

		$lastorder = $order;
	}

	return apply_filters( 'add_menu_classes', $menu );
}

uksort($menu, "strnatcasecmp"); // make it all pretty

$menu = add_menu_classes($menu);

if (! user_can_access_admin_page()) {
	do_action('admin_page_access_denied');
	wp_die( __('You do not have sufficient permissions to access this page.') );
}

?>