wp/wp-admin/includes/schema.php
changeset 0 d970ebf37754
child 5 5e2f62d02dcd
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-admin/includes/schema.php	Wed Nov 06 03:21:17 2013 +0000
@@ -0,0 +1,1008 @@
+<?php
+/**
+ * WordPress Administration Scheme API
+ *
+ * Here we keep the DB structure and option values.
+ *
+ * @package WordPress
+ * @subpackage Administration
+ */
+
+// Declare these as global in case schema.php is included from a function.
+global $wpdb, $wp_queries, $charset_collate;
+
+/**
+ * The database character collate.
+ * @var string
+ * @global string
+ * @name $charset_collate
+ */
+$charset_collate = $wpdb->get_charset_collate();
+
+/**
+ * Retrieve the SQL for creating database tables.
+ *
+ * @since 3.3.0
+ *
+ * @param string $scope Optional. The tables for which to retrieve SQL. Can be all, global, ms_global, or blog tables. Defaults to all.
+ * @param int $blog_id Optional. The blog ID for which to retrieve SQL. Default is the current blog ID.
+ * @return string The SQL needed to create the requested tables.
+ */
+function wp_get_db_schema( $scope = 'all', $blog_id = null ) {
+	global $wpdb;
+
+	$charset_collate = '';
+
+	if ( ! empty($wpdb->charset) )
+		$charset_collate = "DEFAULT CHARACTER SET $wpdb->charset";
+	if ( ! empty($wpdb->collate) )
+		$charset_collate .= " COLLATE $wpdb->collate";
+
+	if ( $blog_id && $blog_id != $wpdb->blogid )
+		$old_blog_id = $wpdb->set_blog_id( $blog_id );
+
+	// Engage multisite if in the middle of turning it on from network.php.
+	$is_multisite = is_multisite() || ( defined( 'WP_INSTALLING_NETWORK' ) && WP_INSTALLING_NETWORK );
+
+	// Blog specific tables.
+	$blog_tables = "CREATE TABLE $wpdb->terms (
+ term_id bigint(20) unsigned NOT NULL auto_increment,
+ name varchar(200) NOT NULL default '',
+ slug varchar(200) NOT NULL default '',
+ term_group bigint(10) NOT NULL default 0,
+ PRIMARY KEY  (term_id),
+ UNIQUE KEY slug (slug),
+ KEY name (name)
+) $charset_collate;
+CREATE TABLE $wpdb->term_taxonomy (
+ term_taxonomy_id bigint(20) unsigned NOT NULL auto_increment,
+ term_id bigint(20) unsigned NOT NULL default 0,
+ taxonomy varchar(32) NOT NULL default '',
+ description longtext NOT NULL,
+ parent bigint(20) unsigned NOT NULL default 0,
+ count bigint(20) NOT NULL default 0,
+ PRIMARY KEY  (term_taxonomy_id),
+ UNIQUE KEY term_id_taxonomy (term_id,taxonomy),
+ KEY taxonomy (taxonomy)
+) $charset_collate;
+CREATE TABLE $wpdb->term_relationships (
+ object_id bigint(20) unsigned NOT NULL default 0,
+ term_taxonomy_id bigint(20) unsigned NOT NULL default 0,
+ term_order int(11) NOT NULL default 0,
+ PRIMARY KEY  (object_id,term_taxonomy_id),
+ KEY term_taxonomy_id (term_taxonomy_id)
+) $charset_collate;
+CREATE TABLE $wpdb->commentmeta (
+  meta_id bigint(20) unsigned NOT NULL auto_increment,
+  comment_id bigint(20) unsigned NOT NULL default '0',
+  meta_key varchar(255) default NULL,
+  meta_value longtext,
+  PRIMARY KEY  (meta_id),
+  KEY comment_id (comment_id),
+  KEY meta_key (meta_key)
+) $charset_collate;
+CREATE TABLE $wpdb->comments (
+  comment_ID bigint(20) unsigned NOT NULL auto_increment,
+  comment_post_ID bigint(20) unsigned NOT NULL default '0',
+  comment_author tinytext NOT NULL,
+  comment_author_email varchar(100) NOT NULL default '',
+  comment_author_url varchar(200) NOT NULL default '',
+  comment_author_IP varchar(100) NOT NULL default '',
+  comment_date datetime NOT NULL default '0000-00-00 00:00:00',
+  comment_date_gmt datetime NOT NULL default '0000-00-00 00:00:00',
+  comment_content text NOT NULL,
+  comment_karma int(11) NOT NULL default '0',
+  comment_approved varchar(20) NOT NULL default '1',
+  comment_agent varchar(255) NOT NULL default '',
+  comment_type varchar(20) NOT NULL default '',
+  comment_parent bigint(20) unsigned NOT NULL default '0',
+  user_id bigint(20) unsigned NOT NULL default '0',
+  PRIMARY KEY  (comment_ID),
+  KEY comment_post_ID (comment_post_ID),
+  KEY comment_approved_date_gmt (comment_approved,comment_date_gmt),
+  KEY comment_date_gmt (comment_date_gmt),
+  KEY comment_parent (comment_parent)
+) $charset_collate;
+CREATE TABLE $wpdb->links (
+  link_id bigint(20) unsigned NOT NULL auto_increment,
+  link_url varchar(255) NOT NULL default '',
+  link_name varchar(255) NOT NULL default '',
+  link_image varchar(255) NOT NULL default '',
+  link_target varchar(25) NOT NULL default '',
+  link_description varchar(255) NOT NULL default '',
+  link_visible varchar(20) NOT NULL default 'Y',
+  link_owner bigint(20) unsigned NOT NULL default '1',
+  link_rating int(11) NOT NULL default '0',
+  link_updated datetime NOT NULL default '0000-00-00 00:00:00',
+  link_rel varchar(255) NOT NULL default '',
+  link_notes mediumtext NOT NULL,
+  link_rss varchar(255) NOT NULL default '',
+  PRIMARY KEY  (link_id),
+  KEY link_visible (link_visible)
+) $charset_collate;
+CREATE TABLE $wpdb->options (
+  option_id bigint(20) unsigned NOT NULL auto_increment,
+  option_name varchar(64) NOT NULL default '',
+  option_value longtext NOT NULL,
+  autoload varchar(20) NOT NULL default 'yes',
+  PRIMARY KEY  (option_id),
+  UNIQUE KEY option_name (option_name)
+) $charset_collate;
+CREATE TABLE $wpdb->postmeta (
+  meta_id bigint(20) unsigned NOT NULL auto_increment,
+  post_id bigint(20) unsigned NOT NULL default '0',
+  meta_key varchar(255) default NULL,
+  meta_value longtext,
+  PRIMARY KEY  (meta_id),
+  KEY post_id (post_id),
+  KEY meta_key (meta_key)
+) $charset_collate;
+CREATE TABLE $wpdb->posts (
+  ID bigint(20) unsigned NOT NULL auto_increment,
+  post_author bigint(20) unsigned NOT NULL default '0',
+  post_date datetime NOT NULL default '0000-00-00 00:00:00',
+  post_date_gmt datetime NOT NULL default '0000-00-00 00:00:00',
+  post_content longtext NOT NULL,
+  post_title text NOT NULL,
+  post_excerpt text NOT NULL,
+  post_status varchar(20) NOT NULL default 'publish',
+  comment_status varchar(20) NOT NULL default 'open',
+  ping_status varchar(20) NOT NULL default 'open',
+  post_password varchar(20) NOT NULL default '',
+  post_name varchar(200) NOT NULL default '',
+  to_ping text NOT NULL,
+  pinged text NOT NULL,
+  post_modified datetime NOT NULL default '0000-00-00 00:00:00',
+  post_modified_gmt datetime NOT NULL default '0000-00-00 00:00:00',
+  post_content_filtered longtext NOT NULL,
+  post_parent bigint(20) unsigned NOT NULL default '0',
+  guid varchar(255) NOT NULL default '',
+  menu_order int(11) NOT NULL default '0',
+  post_type varchar(20) NOT NULL default 'post',
+  post_mime_type varchar(100) NOT NULL default '',
+  comment_count bigint(20) NOT NULL default '0',
+  PRIMARY KEY  (ID),
+  KEY post_name (post_name),
+  KEY type_status_date (post_type,post_status,post_date,ID),
+  KEY post_parent (post_parent),
+  KEY post_author (post_author)
+) $charset_collate;\n";
+
+	// Single site users table. The multisite flavor of the users table is handled below.
+	$users_single_table = "CREATE TABLE $wpdb->users (
+  ID bigint(20) unsigned NOT NULL auto_increment,
+  user_login varchar(60) NOT NULL default '',
+  user_pass varchar(64) NOT NULL default '',
+  user_nicename varchar(50) NOT NULL default '',
+  user_email varchar(100) NOT NULL default '',
+  user_url varchar(100) NOT NULL default '',
+  user_registered datetime NOT NULL default '0000-00-00 00:00:00',
+  user_activation_key varchar(60) NOT NULL default '',
+  user_status int(11) NOT NULL default '0',
+  display_name varchar(250) NOT NULL default '',
+  PRIMARY KEY  (ID),
+  KEY user_login_key (user_login),
+  KEY user_nicename (user_nicename)
+) $charset_collate;\n";
+
+	// Multisite users table
+	$users_multi_table = "CREATE TABLE $wpdb->users (
+  ID bigint(20) unsigned NOT NULL auto_increment,
+  user_login varchar(60) NOT NULL default '',
+  user_pass varchar(64) NOT NULL default '',
+  user_nicename varchar(50) NOT NULL default '',
+  user_email varchar(100) NOT NULL default '',
+  user_url varchar(100) NOT NULL default '',
+  user_registered datetime NOT NULL default '0000-00-00 00:00:00',
+  user_activation_key varchar(60) NOT NULL default '',
+  user_status int(11) NOT NULL default '0',
+  display_name varchar(250) NOT NULL default '',
+  spam tinyint(2) NOT NULL default '0',
+  deleted tinyint(2) NOT NULL default '0',
+  PRIMARY KEY  (ID),
+  KEY user_login_key (user_login),
+  KEY user_nicename (user_nicename)
+) $charset_collate;\n";
+
+	// usermeta
+	$usermeta_table = "CREATE TABLE $wpdb->usermeta (
+  umeta_id bigint(20) unsigned NOT NULL auto_increment,
+  user_id bigint(20) unsigned NOT NULL default '0',
+  meta_key varchar(255) default NULL,
+  meta_value longtext,
+  PRIMARY KEY  (umeta_id),
+  KEY user_id (user_id),
+  KEY meta_key (meta_key)
+) $charset_collate;\n";
+
+	// Global tables
+	if ( $is_multisite )
+		$global_tables = $users_multi_table . $usermeta_table;
+	else
+		$global_tables = $users_single_table . $usermeta_table;
+
+	// Multisite global tables.
+	$ms_global_tables = "CREATE TABLE $wpdb->blogs (
+  blog_id bigint(20) NOT NULL auto_increment,
+  site_id bigint(20) NOT NULL default '0',
+  domain varchar(200) NOT NULL default '',
+  path varchar(100) NOT NULL default '',
+  registered datetime NOT NULL default '0000-00-00 00:00:00',
+  last_updated datetime NOT NULL default '0000-00-00 00:00:00',
+  public tinyint(2) NOT NULL default '1',
+  archived tinyint(2) NOT NULL default '0',
+  mature tinyint(2) NOT NULL default '0',
+  spam tinyint(2) NOT NULL default '0',
+  deleted tinyint(2) NOT NULL default '0',
+  lang_id int(11) NOT NULL default '0',
+  PRIMARY KEY  (blog_id),
+  KEY domain (domain(50),path(5)),
+  KEY lang_id (lang_id)
+) $charset_collate;
+CREATE TABLE $wpdb->blog_versions (
+  blog_id bigint(20) NOT NULL default '0',
+  db_version varchar(20) NOT NULL default '',
+  last_updated datetime NOT NULL default '0000-00-00 00:00:00',
+  PRIMARY KEY  (blog_id),
+  KEY db_version (db_version)
+) $charset_collate;
+CREATE TABLE $wpdb->registration_log (
+  ID bigint(20) NOT NULL auto_increment,
+  email varchar(255) NOT NULL default '',
+  IP varchar(30) NOT NULL default '',
+  blog_id bigint(20) NOT NULL default '0',
+  date_registered datetime NOT NULL default '0000-00-00 00:00:00',
+  PRIMARY KEY  (ID),
+  KEY IP (IP)
+) $charset_collate;
+CREATE TABLE $wpdb->site (
+  id bigint(20) NOT NULL auto_increment,
+  domain varchar(200) NOT NULL default '',
+  path varchar(100) NOT NULL default '',
+  PRIMARY KEY  (id),
+  KEY domain (domain,path)
+) $charset_collate;
+CREATE TABLE $wpdb->sitemeta (
+  meta_id bigint(20) NOT NULL auto_increment,
+  site_id bigint(20) NOT NULL default '0',
+  meta_key varchar(255) default NULL,
+  meta_value longtext,
+  PRIMARY KEY  (meta_id),
+  KEY meta_key (meta_key),
+  KEY site_id (site_id)
+) $charset_collate;
+CREATE TABLE $wpdb->signups (
+  signup_id bigint(20) NOT NULL auto_increment,
+  domain varchar(200) NOT NULL default '',
+  path varchar(100) NOT NULL default '',
+  title longtext NOT NULL,
+  user_login varchar(60) NOT NULL default '',
+  user_email varchar(100) NOT NULL default '',
+  registered datetime NOT NULL default '0000-00-00 00:00:00',
+  activated datetime NOT NULL default '0000-00-00 00:00:00',
+  active tinyint(1) NOT NULL default '0',
+  activation_key varchar(50) NOT NULL default '',
+  meta longtext,
+  PRIMARY KEY  (signup_id),
+  KEY activation_key (activation_key),
+  KEY user_email (user_email),
+  KEY user_login_email (user_login,user_email),
+  KEY domain_path (domain,path)
+) $charset_collate;";
+
+	switch ( $scope ) {
+		case 'blog' :
+			$queries = $blog_tables;
+			break;
+		case 'global' :
+			$queries = $global_tables;
+			if ( $is_multisite )
+				$queries .= $ms_global_tables;
+			break;
+		case 'ms_global' :
+			$queries = $ms_global_tables;
+			break;
+		default:
+		case 'all' :
+			$queries = $global_tables . $blog_tables;
+			if ( $is_multisite )
+				$queries .= $ms_global_tables;
+			break;
+	}
+
+	if ( isset( $old_blog_id ) )
+		$wpdb->set_blog_id( $old_blog_id );
+
+	return $queries;
+}
+
+// Populate for back compat.
+$wp_queries = wp_get_db_schema( 'all' );
+
+/**
+ * Create WordPress options and set the default values.
+ *
+ * @since 1.5.0
+ * @uses $wpdb
+ * @uses $wp_db_version
+ */
+function populate_options() {
+	global $wpdb, $wp_db_version, $current_site, $wp_current_db_version;
+
+	$guessurl = wp_guess_url();
+
+	do_action('populate_options');
+
+	if ( ini_get('safe_mode') ) {
+		// Safe mode can break mkdir() so use a flat structure by default.
+		$uploads_use_yearmonth_folders = 0;
+	} else {
+		$uploads_use_yearmonth_folders = 1;
+	}
+
+	$template = WP_DEFAULT_THEME;
+	// If default theme is a child theme, we need to get its template
+	$theme = wp_get_theme( $template );
+	if ( ! $theme->errors() )
+		$template = $theme->get_template();
+
+	$timezone_string = '';
+	$gmt_offset = 0;
+	/* translators: default GMT offset or timezone string. Must be either a valid offset (-12 to 14)
+	   or a valid timezone string (America/New_York). See http://us3.php.net/manual/en/timezones.php
+	   for all timezone strings supported by PHP.
+	*/
+	$offset_or_tz = _x( '0', 'default GMT offset or timezone string' );
+	if ( is_numeric( $offset_or_tz ) )
+		$gmt_offset = $offset_or_tz;
+	elseif ( $offset_or_tz && in_array( $offset_or_tz, timezone_identifiers_list() ) )
+			$timezone_string = $offset_or_tz;
+
+	$options = array(
+	'siteurl' => $guessurl,
+	'blogname' => __('My Site'),
+	/* translators: blog tagline */
+	'blogdescription' => __('Just another WordPress site'),
+	'users_can_register' => 0,
+	'admin_email' => 'you@example.com',
+	/* translators: default start of the week. 0 = Sunday, 1 = Monday */
+	'start_of_week' => _x( '1', 'start of week' ),
+	'use_balanceTags' => 0,
+	'use_smilies' => 1,
+	'require_name_email' => 1,
+	'comments_notify' => 1,
+	'posts_per_rss' => 10,
+	'rss_use_excerpt' => 0,
+	'mailserver_url' => 'mail.example.com',
+	'mailserver_login' => 'login@example.com',
+	'mailserver_pass' => 'password',
+	'mailserver_port' => 110,
+	'default_category' => 1,
+	'default_comment_status' => 'open',
+	'default_ping_status' => 'open',
+	'default_pingback_flag' => 1,
+	'posts_per_page' => 10,
+	/* translators: default date format, see http://php.net/date */
+	'date_format' => __('F j, Y'),
+	/* translators: default time format, see http://php.net/date */
+	'time_format' => __('g:i a'),
+	/* translators: links last updated date format, see http://php.net/date */
+	'links_updated_date_format' => __('F j, Y g:i a'),
+	'links_recently_updated_prepend' => '<em>',
+	'links_recently_updated_append' => '</em>',
+	'links_recently_updated_time' => 120,
+	'comment_moderation' => 0,
+	'moderation_notify' => 1,
+	'permalink_structure' => '',
+	'gzipcompression' => 0,
+	'hack_file' => 0,
+	'blog_charset' => 'UTF-8',
+	'moderation_keys' => '',
+	'active_plugins' => array(),
+	'home' => $guessurl,
+	'category_base' => '',
+	'ping_sites' => 'http://rpc.pingomatic.com/',
+	'advanced_edit' => 0,
+	'comment_max_links' => 2,
+	'gmt_offset' => $gmt_offset,
+
+	// 1.5
+	'default_email_category' => 1,
+	'recently_edited' => '',
+	'template' => $template,
+	'stylesheet' => WP_DEFAULT_THEME,
+	'comment_whitelist' => 1,
+	'blacklist_keys' => '',
+	'comment_registration' => 0,
+	'html_type' => 'text/html',
+
+	// 1.5.1
+	'use_trackback' => 0,
+
+	// 2.0
+	'default_role' => 'subscriber',
+	'db_version' => $wp_db_version,
+
+	// 2.0.1
+	'uploads_use_yearmonth_folders' => $uploads_use_yearmonth_folders,
+	'upload_path' => '',
+
+	// 2.1
+	'blog_public' => '1',
+	'default_link_category' => 2,
+	'show_on_front' => 'posts',
+
+	// 2.2
+	'tag_base' => '',
+
+	// 2.5
+	'show_avatars' => '1',
+	'avatar_rating' => 'G',
+	'upload_url_path' => '',
+	'thumbnail_size_w' => 150,
+	'thumbnail_size_h' => 150,
+	'thumbnail_crop' => 1,
+	'medium_size_w' => 300,
+	'medium_size_h' => 300,
+
+	// 2.6
+	'avatar_default' => 'mystery',
+
+	// 2.7
+	'large_size_w' => 1024,
+	'large_size_h' => 1024,
+	'image_default_link_type' => 'file',
+	'image_default_size' => '',
+	'image_default_align' => '',
+	'close_comments_for_old_posts' => 0,
+	'close_comments_days_old' => 14,
+	'thread_comments' => 1,
+	'thread_comments_depth' => 5,
+	'page_comments' => 0,
+	'comments_per_page' => 50,
+	'default_comments_page' => 'newest',
+	'comment_order' => 'asc',
+	'sticky_posts' => array(),
+	'widget_categories' => array(),
+	'widget_text' => array(),
+	'widget_rss' => array(),
+	'uninstall_plugins' => array(),
+
+	// 2.8
+	'timezone_string' => $timezone_string,
+
+	// 3.0
+	'page_for_posts' => 0,
+	'page_on_front' => 0,
+
+	// 3.1
+	'default_post_format' => 0,
+
+	// 3.5
+	'link_manager_enabled' => 0,
+	);
+
+	// 3.3
+	if ( ! is_multisite() ) {
+		$options['initial_db_version'] = ! empty( $wp_current_db_version ) && $wp_current_db_version < $wp_db_version
+			? $wp_current_db_version : $wp_db_version;
+	}
+
+	// 3.0 multisite
+	if ( is_multisite() ) {
+		/* translators: blog tagline */
+		$options[ 'blogdescription' ] = sprintf(__('Just another %s site'), $current_site->site_name );
+		$options[ 'permalink_structure' ] = '/%year%/%monthnum%/%day%/%postname%/';
+	}
+
+	// Set autoload to no for these options
+	$fat_options = array( 'moderation_keys', 'recently_edited', 'blacklist_keys', 'uninstall_plugins' );
+
+	$keys = "'" . implode( "', '", array_keys( $options ) ) . "'";
+	$existing_options = $wpdb->get_col( "SELECT option_name FROM $wpdb->options WHERE option_name in ( $keys )" );
+
+	$insert = '';
+	foreach ( $options as $option => $value ) {
+		if ( in_array($option, $existing_options) )
+			continue;
+		if ( in_array($option, $fat_options) )
+			$autoload = 'no';
+		else
+			$autoload = 'yes';
+
+		if ( is_array($value) )
+			$value = serialize($value);
+		if ( !empty($insert) )
+			$insert .= ', ';
+		$insert .= $wpdb->prepare( "(%s, %s, %s)", $option, $value, $autoload );
+	}
+
+	if ( !empty($insert) )
+		$wpdb->query("INSERT INTO $wpdb->options (option_name, option_value, autoload) VALUES " . $insert);
+
+	// in case it is set, but blank, update "home"
+	if ( !__get_option('home') ) update_option('home', $guessurl);
+
+	// Delete unused options
+	$unusedoptions = array(
+		'blodotgsping_url', 'bodyterminator', 'emailtestonly', 'phoneemail_separator', 'smilies_directory',
+		'subjectprefix', 'use_bbcode', 'use_blodotgsping', 'use_phoneemail', 'use_quicktags', 'use_weblogsping',
+		'weblogs_cache_file', 'use_preview', 'use_htmltrans', 'smilies_directory', 'fileupload_allowedusers',
+		'use_phoneemail', 'default_post_status', 'default_post_category', 'archive_mode', 'time_difference',
+		'links_minadminlevel', 'links_use_adminlevels', 'links_rating_type', 'links_rating_char',
+		'links_rating_ignore_zero', 'links_rating_single_image', 'links_rating_image0', 'links_rating_image1',
+		'links_rating_image2', 'links_rating_image3', 'links_rating_image4', 'links_rating_image5',
+		'links_rating_image6', 'links_rating_image7', 'links_rating_image8', 'links_rating_image9',
+		'weblogs_cacheminutes', 'comment_allowed_tags', 'search_engine_friendly_urls', 'default_geourl_lat',
+		'default_geourl_lon', 'use_default_geourl', 'weblogs_xml_url', 'new_users_can_blog', '_wpnonce',
+		'_wp_http_referer', 'Update', 'action', 'rich_editing', 'autosave_interval', 'deactivated_plugins',
+		'can_compress_scripts', 'page_uris', 'update_core', 'update_plugins', 'update_themes', 'doing_cron',
+		'random_seed', 'rss_excerpt_length', 'secret', 'use_linksupdate', 'default_comment_status_page',
+		'wporg_popular_tags', 'what_to_show', 'rss_language', 'language', 'enable_xmlrpc', 'enable_app',
+		'embed_autourls', 'default_post_edit_rows',
+	);
+	foreach ( $unusedoptions as $option )
+		delete_option($option);
+
+	// delete obsolete magpie stuff
+	$wpdb->query("DELETE FROM $wpdb->options WHERE option_name REGEXP '^rss_[0-9a-f]{32}(_ts)?$'");
+
+	// Deletes all expired transients.
+	// The multi-table delete syntax is used to delete the transient record from table a,
+	// and the corresponding transient_timeout record from table b.
+	$time = time();
+	$wpdb->query("DELETE a, b FROM $wpdb->options a, $wpdb->options b WHERE
+	        a.option_name LIKE '\_transient\_%' AND
+	        a.option_name NOT LIKE '\_transient\_timeout\_%' AND
+	        b.option_name = CONCAT( '_transient_timeout_', SUBSTRING( a.option_name, 12 ) )
+	        AND b.option_value < $time");
+
+	if ( is_main_site() && is_main_network() ) {
+		$wpdb->query("DELETE a, b FROM $wpdb->options a, $wpdb->options b WHERE
+			a.option_name LIKE '\_site\_transient\_%' AND
+			a.option_name NOT LIKE '\_site\_transient\_timeout\_%' AND
+			b.option_name = CONCAT( '_site_transient_timeout_', SUBSTRING( a.option_name, 17 ) )
+			AND b.option_value < $time");
+    }
+}
+
+/**
+ * Execute WordPress role creation for the various WordPress versions.
+ *
+ * @since 2.0.0
+ */
+function populate_roles() {
+	populate_roles_160();
+	populate_roles_210();
+	populate_roles_230();
+	populate_roles_250();
+	populate_roles_260();
+	populate_roles_270();
+	populate_roles_280();
+	populate_roles_300();
+}
+
+/**
+ * Create the roles for WordPress 2.0
+ *
+ * @since 2.0.0
+ */
+function populate_roles_160() {
+	// Add roles
+
+	// Dummy gettext calls to get strings in the catalog.
+	/* translators: user role */
+	_x('Administrator', 'User role');
+	/* translators: user role */
+	_x('Editor', 'User role');
+	/* translators: user role */
+	_x('Author', 'User role');
+	/* translators: user role */
+	_x('Contributor', 'User role');
+	/* translators: user role */
+	_x('Subscriber', 'User role');
+
+	add_role('administrator', 'Administrator');
+	add_role('editor', 'Editor');
+	add_role('author', 'Author');
+	add_role('contributor', 'Contributor');
+	add_role('subscriber', 'Subscriber');
+
+	// Add caps for Administrator role
+	$role = get_role('administrator');
+	$role->add_cap('switch_themes');
+	$role->add_cap('edit_themes');
+	$role->add_cap('activate_plugins');
+	$role->add_cap('edit_plugins');
+	$role->add_cap('edit_users');
+	$role->add_cap('edit_files');
+	$role->add_cap('manage_options');
+	$role->add_cap('moderate_comments');
+	$role->add_cap('manage_categories');
+	$role->add_cap('manage_links');
+	$role->add_cap('upload_files');
+	$role->add_cap('import');
+	$role->add_cap('unfiltered_html');
+	$role->add_cap('edit_posts');
+	$role->add_cap('edit_others_posts');
+	$role->add_cap('edit_published_posts');
+	$role->add_cap('publish_posts');
+	$role->add_cap('edit_pages');
+	$role->add_cap('read');
+	$role->add_cap('level_10');
+	$role->add_cap('level_9');
+	$role->add_cap('level_8');
+	$role->add_cap('level_7');
+	$role->add_cap('level_6');
+	$role->add_cap('level_5');
+	$role->add_cap('level_4');
+	$role->add_cap('level_3');
+	$role->add_cap('level_2');
+	$role->add_cap('level_1');
+	$role->add_cap('level_0');
+
+	// Add caps for Editor role
+	$role = get_role('editor');
+	$role->add_cap('moderate_comments');
+	$role->add_cap('manage_categories');
+	$role->add_cap('manage_links');
+	$role->add_cap('upload_files');
+	$role->add_cap('unfiltered_html');
+	$role->add_cap('edit_posts');
+	$role->add_cap('edit_others_posts');
+	$role->add_cap('edit_published_posts');
+	$role->add_cap('publish_posts');
+	$role->add_cap('edit_pages');
+	$role->add_cap('read');
+	$role->add_cap('level_7');
+	$role->add_cap('level_6');
+	$role->add_cap('level_5');
+	$role->add_cap('level_4');
+	$role->add_cap('level_3');
+	$role->add_cap('level_2');
+	$role->add_cap('level_1');
+	$role->add_cap('level_0');
+
+	// Add caps for Author role
+	$role = get_role('author');
+	$role->add_cap('upload_files');
+	$role->add_cap('edit_posts');
+	$role->add_cap('edit_published_posts');
+	$role->add_cap('publish_posts');
+	$role->add_cap('read');
+	$role->add_cap('level_2');
+	$role->add_cap('level_1');
+	$role->add_cap('level_0');
+
+	// Add caps for Contributor role
+	$role = get_role('contributor');
+	$role->add_cap('edit_posts');
+	$role->add_cap('read');
+	$role->add_cap('level_1');
+	$role->add_cap('level_0');
+
+	// Add caps for Subscriber role
+	$role = get_role('subscriber');
+	$role->add_cap('read');
+	$role->add_cap('level_0');
+}
+
+/**
+ * Create and modify WordPress roles for WordPress 2.1.
+ *
+ * @since 2.1.0
+ */
+function populate_roles_210() {
+	$roles = array('administrator', 'editor');
+	foreach ($roles as $role) {
+		$role = get_role($role);
+		if ( empty($role) )
+			continue;
+
+		$role->add_cap('edit_others_pages');
+		$role->add_cap('edit_published_pages');
+		$role->add_cap('publish_pages');
+		$role->add_cap('delete_pages');
+		$role->add_cap('delete_others_pages');
+		$role->add_cap('delete_published_pages');
+		$role->add_cap('delete_posts');
+		$role->add_cap('delete_others_posts');
+		$role->add_cap('delete_published_posts');
+		$role->add_cap('delete_private_posts');
+		$role->add_cap('edit_private_posts');
+		$role->add_cap('read_private_posts');
+		$role->add_cap('delete_private_pages');
+		$role->add_cap('edit_private_pages');
+		$role->add_cap('read_private_pages');
+	}
+
+	$role = get_role('administrator');
+	if ( ! empty($role) ) {
+		$role->add_cap('delete_users');
+		$role->add_cap('create_users');
+	}
+
+	$role = get_role('author');
+	if ( ! empty($role) ) {
+		$role->add_cap('delete_posts');
+		$role->add_cap('delete_published_posts');
+	}
+
+	$role = get_role('contributor');
+	if ( ! empty($role) ) {
+		$role->add_cap('delete_posts');
+	}
+}
+
+/**
+ * Create and modify WordPress roles for WordPress 2.3.
+ *
+ * @since 2.3.0
+ */
+function populate_roles_230() {
+	$role = get_role( 'administrator' );
+
+	if ( !empty( $role ) ) {
+		$role->add_cap( 'unfiltered_upload' );
+	}
+}
+
+/**
+ * Create and modify WordPress roles for WordPress 2.5.
+ *
+ * @since 2.5.0
+ */
+function populate_roles_250() {
+	$role = get_role( 'administrator' );
+
+	if ( !empty( $role ) ) {
+		$role->add_cap( 'edit_dashboard' );
+	}
+}
+
+/**
+ * Create and modify WordPress roles for WordPress 2.6.
+ *
+ * @since 2.6.0
+ */
+function populate_roles_260() {
+	$role = get_role( 'administrator' );
+
+	if ( !empty( $role ) ) {
+		$role->add_cap( 'update_plugins' );
+		$role->add_cap( 'delete_plugins' );
+	}
+}
+
+/**
+ * Create and modify WordPress roles for WordPress 2.7.
+ *
+ * @since 2.7.0
+ */
+function populate_roles_270() {
+	$role = get_role( 'administrator' );
+
+	if ( !empty( $role ) ) {
+		$role->add_cap( 'install_plugins' );
+		$role->add_cap( 'update_themes' );
+	}
+}
+
+/**
+ * Create and modify WordPress roles for WordPress 2.8.
+ *
+ * @since 2.8.0
+ */
+function populate_roles_280() {
+	$role = get_role( 'administrator' );
+
+	if ( !empty( $role ) ) {
+		$role->add_cap( 'install_themes' );
+	}
+}
+
+/**
+ * Create and modify WordPress roles for WordPress 3.0.
+ *
+ * @since 3.0.0
+ */
+function populate_roles_300() {
+	$role = get_role( 'administrator' );
+
+	if ( !empty( $role ) ) {
+		$role->add_cap( 'update_core' );
+		$role->add_cap( 'list_users' );
+		$role->add_cap( 'remove_users' );
+
+		// Never used, will be removed. create_users or
+		// promote_users is the capability you're looking for.
+		$role->add_cap( 'add_users' );
+
+		$role->add_cap( 'promote_users' );
+		$role->add_cap( 'edit_theme_options' );
+		$role->add_cap( 'delete_themes' );
+		$role->add_cap( 'export' );
+	}
+}
+
+/**
+ * Install Network.
+ *
+ * @since 3.0.0
+ *
+ */
+if ( !function_exists( 'install_network' ) ) :
+function install_network() {
+	if ( ! defined( 'WP_INSTALLING_NETWORK' ) )
+		define( 'WP_INSTALLING_NETWORK', true );
+
+	dbDelta( wp_get_db_schema( 'global' ) );
+}
+endif;
+
+/**
+ * populate network settings
+ *
+ * @since 3.0.0
+ *
+ * @param int $network_id id of network to populate
+ * @return bool|WP_Error True on success, or WP_Error on warning (with the install otherwise successful,
+ * 	so the error code must be checked) or failure.
+ */
+function populate_network( $network_id = 1, $domain = '', $email = '', $site_name = '', $path = '/', $subdomain_install = false ) {
+	global $wpdb, $current_site, $wp_db_version, $wp_rewrite;
+
+	$errors = new WP_Error();
+	if ( '' == $domain )
+		$errors->add( 'empty_domain', __( 'You must provide a domain name.' ) );
+	if ( '' == $site_name )
+		$errors->add( 'empty_sitename', __( 'You must provide a name for your network of sites.' ) );
+
+	// check for network collision
+	if ( $network_id == $wpdb->get_var( $wpdb->prepare( "SELECT id FROM $wpdb->site WHERE id = %d", $network_id ) ) )
+		$errors->add( 'siteid_exists', __( 'The network already exists.' ) );
+
+	$site_user = get_user_by( 'email', $email );
+	if ( ! is_email( $email ) )
+		$errors->add( 'invalid_email', __( 'You must provide a valid e-mail address.' ) );
+
+	if ( $errors->get_error_code() )
+		return $errors;
+
+	// set up site tables
+	$template = get_option( 'template' );
+	$stylesheet = get_option( 'stylesheet' );
+	$allowed_themes = array( $stylesheet => true );
+	if ( $template != $stylesheet )
+		$allowed_themes[ $template ] = true;
+	if ( WP_DEFAULT_THEME != $stylesheet && WP_DEFAULT_THEME != $template )
+		$allowed_themes[ WP_DEFAULT_THEME ] = true;
+
+	if ( 1 == $network_id ) {
+		$wpdb->insert( $wpdb->site, array( 'domain' => $domain, 'path' => $path ) );
+		$network_id = $wpdb->insert_id;
+	} else {
+		$wpdb->insert( $wpdb->site, array( 'domain' => $domain, 'path' => $path, 'id' => $network_id ) );
+	}
+
+	if ( !is_multisite() ) {
+		$site_admins = array( $site_user->user_login );
+		$users = get_users( array( 'fields' => array( 'ID', 'user_login' ) ) );
+		if ( $users ) {
+			foreach ( $users as $user ) {
+				if ( is_super_admin( $user->ID ) && !in_array( $user->user_login, $site_admins ) )
+					$site_admins[] = $user->user_login;
+			}
+		}
+	} else {
+		$site_admins = get_site_option( 'site_admins' );
+	}
+
+	$welcome_email = __( 'Dear User,
+
+Your new SITE_NAME site has been successfully set up at:
+BLOG_URL
+
+You can log in to the administrator account with the following information:
+Username: USERNAME
+Password: PASSWORD
+Log in here: BLOG_URLwp-login.php
+
+We hope you enjoy your new site. Thanks!
+
+--The Team @ SITE_NAME' );
+
+	$sitemeta = array(
+		'site_name' => $site_name,
+		'admin_email' => $site_user->user_email,
+		'admin_user_id' => $site_user->ID,
+		'registration' => 'none',
+		'upload_filetypes' => 'jpg jpeg png gif mp3 mov avi wmv midi mid pdf',
+		'blog_upload_space' => 100,
+		'fileupload_maxk' => 1500,
+		'site_admins' => $site_admins,
+		'allowedthemes' => $allowed_themes,
+		'illegal_names' => array( 'www', 'web', 'root', 'admin', 'main', 'invite', 'administrator', 'files' ),
+		'wpmu_upgrade_site' => $wp_db_version,
+		'welcome_email' => $welcome_email,
+		'first_post' => __( 'Welcome to <a href="SITE_URL">SITE_NAME</a>. This is your first post. Edit or delete it, then start blogging!' ),
+		// @todo - network admins should have a method of editing the network siteurl (used for cookie hash)
+		'siteurl' => get_option( 'siteurl' ) . '/',
+		'add_new_users' => '0',
+		'upload_space_check_disabled' => is_multisite() ? get_site_option( 'upload_space_check_disabled' ) : '1',
+		'subdomain_install' => intval( $subdomain_install ),
+		'global_terms_enabled' => global_terms_enabled() ? '1' : '0',
+		'ms_files_rewriting' => is_multisite() ? get_site_option( 'ms_files_rewriting' ) : '0',
+		'initial_db_version' => get_option( 'initial_db_version' ),
+		'active_sitewide_plugins' => array(),
+		'WPLANG' => get_locale(),
+	);
+	if ( ! $subdomain_install )
+		$sitemeta['illegal_names'][] = 'blog';
+
+	/**
+	 * Filter meta for a network on creation.
+	 *
+	 * @since 3.7.0
+	 *
+	 * @param array $sitemeta Associative of meta keys and values to be inserted.
+	 * @param int $network_id Network ID being created.
+	 */
+	$sitemeta = apply_filters( 'populate_network_meta', $sitemeta, $network_id );
+
+	$insert = '';
+	foreach ( $sitemeta as $meta_key => $meta_value ) {
+		if ( is_array( $meta_value ) )
+			$meta_value = serialize( $meta_value );
+		if ( !empty( $insert ) )
+			$insert .= ', ';
+		$insert .= $wpdb->prepare( "( %d, %s, %s)", $network_id, $meta_key, $meta_value );
+	}
+	$wpdb->query( "INSERT INTO $wpdb->sitemeta ( site_id, meta_key, meta_value ) VALUES " . $insert );
+
+	// When upgrading from single to multisite, assume the current site will become the main site of the network.
+	// When using populate_network() to create another network in an existing multisite environment,
+	// skip these steps since the main site of the new network has not yet been created.
+	if ( ! is_multisite() ) {
+		$current_site = new stdClass;
+		$current_site->domain = $domain;
+		$current_site->path = $path;
+		$current_site->site_name = ucfirst( $domain );
+		$wpdb->insert( $wpdb->blogs, array( 'site_id' => $network_id, 'blog_id' => 1, 'domain' => $domain, 'path' => $path, 'registered' => current_time( 'mysql' ) ) );
+		$current_site->blog_id = $blog_id = $wpdb->insert_id;
+		update_user_meta( $site_user->ID, 'source_domain', $domain );
+		update_user_meta( $site_user->ID, 'primary_blog', $blog_id );
+
+		if ( $subdomain_install )
+			$wp_rewrite->set_permalink_structure( '/%year%/%monthnum%/%day%/%postname%/' );
+		else
+			$wp_rewrite->set_permalink_structure( '/blog/%year%/%monthnum%/%day%/%postname%/' );
+
+		flush_rewrite_rules();
+
+		if ( ! $subdomain_install )
+			return true;
+
+		$vhost_ok = false;
+		$errstr = '';
+		$hostname = substr( md5( time() ), 0, 6 ) . '.' . $domain; // Very random hostname!
+		$page = wp_remote_get( 'http://' . $hostname, array( 'timeout' => 5, 'httpversion' => '1.1' ) );
+		if ( is_wp_error( $page ) )
+			$errstr = $page->get_error_message();
+		elseif ( 200 == wp_remote_retrieve_response_code( $page ) )
+				$vhost_ok = true;
+
+		if ( ! $vhost_ok ) {
+			$msg = '<p><strong>' . __( 'Warning! Wildcard DNS may not be configured correctly!' ) . '</strong></p>';
+			$msg .= '<p>' . sprintf( __( 'The installer attempted to contact a random hostname (<code>%1$s</code>) on your domain.' ), $hostname );
+			if ( ! empty ( $errstr ) )
+				$msg .= ' ' . sprintf( __( 'This resulted in an error message: %s' ), '<code>' . $errstr . '</code>' );
+			$msg .= '</p>';
+			$msg .= '<p>' . __( 'To use a subdomain configuration, you must have a wildcard entry in your DNS. This usually means adding a <code>*</code> hostname record pointing at your web server in your DNS configuration tool.' ) . '</p>';
+			$msg .= '<p>' . __( 'You can still use your site but any subdomain you create may not be accessible. If you know your DNS is correct, ignore this message.' ) . '</p>';
+			return new WP_Error( 'no_wildcard_dns', $msg );
+		}
+	}
+
+	return true;
+}